Verfahren zur Umwandlung von Toluol und Butadien in Styrol und 1-Penten.

PROCESS FOR PREPARING A CHLORINE COMPRISING CATALYST, THE PREPARED CATALYST, AND ITS USE

PROCESS FOR PREPARING A CHLORINE COMPRISING CATALYST, THE PREPARED CATALYST, AND ITS USE

Process for preparing a chlorine comprising catalyst, the prepared catalyst, and its use

The invention concerns a process for preparing a chlorine comprising catalyst by (a) providing a Fischer-Tropsch catalyst comprising titania and at least 5 weight percent cobalt; (b) impregnating the catalyst with a solution comprising chloride ions;and (c) heating the impregnated catalyst at a temperature in the range of between 100 and 500 °C for at least 5 minutes up to 2 days. The prepared catalyst preferably comprises 0.13 –3 weight percent of the element chlorine. The invention further relates to the prepared catalyst and its use.

COMPOSITIONS AND METHODS FOR BIOLOGICAL PRODUCTION OF ISOPRENE

The present disclosure provides compositions and methods for biologically producing isoprene using methanotrophic bacteria that utilize carbon feedstock, such as methane or natural gas.

PROCESS FOR PREPARING ISOBUTENE BY CLEAVING MTBE-CONTAINING MIXTURES

The invention provides a process for preparing isobutene from MTBE-containing mixtures, which comprises the following steps: a) in a reactor R, cleaving a mixture obtained from an MTBE-containing feedstock (1a) and/or an MTBE-containing stream (13, 5), affording a stream (6) of reaction products consisting of isobutene, methanol, MTBE and by-products, the latter consisting of a1) high boilers having a boiling range above 55°C at a pressure of 0.1 MPa; a2) medium boilers having a boiling range of 12 to 55°C at a pressure of 0.1 MPa; and a3) low boilers having a boiling range below 12°C at a pressure of 0.1 MPa; b) distillatively separating stream (6) into a stream (7) which contains the isobutene product and low boilers, and a stream (8) which contains MTBE, methanol, medium boilers and high boilers; c) distillatively separating stream (8) to obtain an MTBE-containing stream (10, 12) and a methanol-containing high boiler stream (9, 11); d) recycling an MTBE-containing stream (10, 12, 13) ...

OBTAINING LIGHT OLEFINS AND ISOPRENE FROM BUTANE

PRODUCTION OF LIGHT OLEFINS AND ISOPRENE FROM BUTANE

ПОЛУЧЕНИЕ ЛЕГКИХ ОЛЕФИНОВ И ИЗОПРЕНА ИЗ БУТАНА

Предложен способ селективного получения этилена, пропилена и изопрена из легких углеводородов, включающий а) фракционирование бутановой фракции в колонне для отгонки изобутана с получением обогащенной изобутановой фракции и обогащенной фракции нормального бутана; б) осуществление крекинга указанной фракции нормального бутана и, возможно, этановой фракции, возможно, пропановой фракции по меньшей мере в одной зоне некаталитического крекинга с получением богатого олефинами потока; в) обработку указанного богатого олефинами потока в секции разделения для извлечения потока этилена, потока пропилена, потока 2-бутена; г) преобразование извлеченного на стадии (а) изобутана в изобутен и д) осуществление реакции изобутена стадии (г) с формальдегидом с получением изопрена или д') осуществление диспропорционирования изобутена стадии (г) и пропилена, извлеченного на стадии (в), или 2-бутена, извлеченного на стадии (в), отделения потока изоамилена и конверсии изоамилена в изопрен путем дегидрирования ...

Production of 3-Methyl-1-Butene

Method for producing catalysts of high efficiency for dehydrogenation of light branched hydrocarbons

PRODUCTION OF LIGHT OLEFINAS AND ISOPRENO FROM BUTANE

PRODUCTION DE L'ISOPRENE

composição catalítica à base de níquel e de ligando do tipo fosfina e de uma base de lewis e sua utilização em um processo de oligomerização das olefinas

Novel catalytic composition based on nickel and a phosphine type ligand and a lewis base, and its use in a process for the oligomerization of olefins

The invention concerns a catalytic composition comprising: at least one nickel precursor with an oxidation number of (+II), at least one phosphine ligand with formula PR1 R2 R3 in which the groups R1, R2 and R3 may be identical or different and may or may not be bonded together, and at least one Lewis base, said composition having a molar ratio of the phosphine ligand to the nickel precursor of less than or equal to 5 and a molar ratio of the Lewis base and phosphine ligand together to the nickel precursor of greater than or equal to 5.

PROCESS FOR THE PREPARATION OF C5 AND/OR C6 OLEFINS

Process for the preparation of C5 and/or C6 olefins from a lower olefin, which lower olefin comprises from 2 to 5 carbon atoms, and an oxygenate, which oxygenate comprises at least one oxygen-bonded alkyl group, comprising contacting the lower olefin with the oxygenate, in a molar ratio of oxygen-bonded alkyl group to lower olefin of at least 1:1 in the presence of a MTT-type zeolite.

Process for preparing a C4-olefin mixture by selective hydrogenation and metathesis process for using this stream

A C4-olefin mixture having a 1,3-butadiene content of from 100 to 500 ppm and a content of 1,2-dienes of less than 10 ppm is described. The present invention further provides a process for preparing this C4-olefin mixture and provides for its use in a metathesis reaction for preparing 2-pentene and/or 3-hexene.

НОВАЯ КАТАЛИТИЧЕСКАЯ КОМПОЗИЦИЯ НА ОСНОВЕ НИКЕЛЯ И ЛИГАНДА ФОСФИНОВОГО ТИПА И ОСНОВАНИЯ ЛЬЮИСА И ЕГО ПРИМЕНЕНИЕ В СПОСОБЕ ОЛИГОМЕРИЗАЦИИ ОЛЕФИНОВ

Изобретение относится к каталитической композиции, содержащей по меньшей мере один предшественник никеля со степенью окисления (+II), по меньшей мере один фосфиновый лиганд формулы PR1R2R3, в котором группы R1, R2и R3являются одинаковыми или отличающимися друг от друга и необязательно связаны между собой, активирующий агент, выбранный из группы, которую образуют хлор- и бромпроизводные насыщенные углеводородные соединения алюминия, применяемые по отдельности или в смеси, и по меньшей мере одно основание Льюиса, причем в указанной композиции молярное отношение фосфинового лиганда к предшественнику никеля меньше или равно 5, молярное отношение комбинации основания Льюиса и фосфинового лиганда к предшественнику никеля составляет от 5 до 30, молярное отношение активирующего агента к предшественнику никеля превышает или равно 6 и меньше или равно 30. 2 н. и 9 з.п. ф-лы, 7 пр.

МАКРО- И МЕЗОПОРИСТЫЙ КАТАЛИЗАТОР С ОДНОРОДНО РАСПРЕДЕЛЕННОЙ АКТИВНОЙ НИКЕЛЕВОЙ ФАЗОЙ И СРЕДНИМ ДИАМЕТРОМ МАКРОПОР ОТ 50 ДО 300 нм И ЕГО ПРИМЕНЕНИЕ В ГИДРИРОВАНИИ УГЛЕВОДОРОДОВ

Изобретение относится к катализатору гидрирования углеводородного сырья, содержащего полиненасыщенные и/или ароматические соединения, способу получения указанного катализатора и к способу гидрирования. Катализатор содержит обожженную оксидную матрицу преимущественно из оксида алюминия и активную фазу, содержащую никель, причем указанная активная фаза полностью однородно распределена внутри указанной обожженной оксидной матрицы преимущественно из оксида алюминия, причем упомянутая матрица имеет содержание обожженного оксида алюминия 90 вес.% или более от полного веса указанной матрицы. Содержание никеля составляет от 5 до 65 вес.% указанного элемента от полной массы катализатора. Указанная активная фаза не содержит металла группы VIB. Частицы никеля имеют диаметр в интервале от 1,5 до 15 нм. Катализатор имеет средний диаметр мезопор в интервале от 12 до 25 нм, средний диаметр макропор в интервале от 50 до 300 нм, объем мезопор, измеренный ртутной порозиметрией, в интервале от 0,40 до 0,65 ...

НОВАЯ КАТАЛИТИЧЕСКАЯ КОМПОЗИЦИЯ НА ОСНОВЕ НИКЕЛЯ И ЛИГАНДА ФОСФИНОВОГО ТИПА И ОСНОВАНИЯ ЛЬЮИСА И ЕГО ПРИМЕНЕНИЕ В СПОСОБЕ ОЛИГОМЕРИЗАЦИИ ОЛЕФИНОВ

Verfahren zur Herstellung von 3-Methyl-1-buten

PROCESS FOR THE PREPARATION OF C5 AND/OR C6 OLEFINS

Process for the preparation of C5 and/or C6 olefins from a lower olefin, which lower olefin comprises from 2 to 5 carbon atoms, and an oxygenate, which oxygenate comprises at least one oxygen-bonded alkyl group, comprising contacting the lower olefin with the oxygenate, in a molar ratio of oxygen-bonded alkyl group to lower olefin of at least 1:1 in the presence of a MTT-type zeolite.

PRODUCTION OF LIGHT OLEFINS AND ISOPRENE FROM BUTANE

Process for the selective production of ethylene, propylene and isoprene from light hydrocarbons comprising: a) fractionating a butane fraction in a de-isobutanizer to obtain an enriched iso-butane fraction and an enriched normal-butane fraction, b) cracking said normal-butane fraction and optionally an ethane fraction, optionally a propane fraction, in a non-catalytic cracking zone to produce an olefin rich stream, c) treating said olefin rich stream in a separating section to recover : an ethylene stream, a propylene stream, d) transforming the recovered iso-butane of step a) into iso-butene or t-butyl hydroperoxide or partly into iso-butene and partly into t-butyl hydroperoxide, e) optionally reacting iso-butene of step d), if any, with formaldehyde to make isoprene, f) optionally reacting t-butyl hydroperoxide of step d), if any, with an olefin to give an epoxide and t-butanol and further separating t-butanol, or optionally having t-butyl hydroperoxide of step d), if any, decomposed ...

PREPARATION OF C5-/C6 OLEFINS

A process for preparing C5-/C6-olefins from an olefinic starting stream comprising C4-hydrocarbons comprises a) carrying out a metathesis reaction in the presence of a metathesis catalyst comprising at least one compound of a metal of transition group VIb, VIIb or VIII of the Periodic Table of the Elements so as to convert the 1-butene, 2-butene and isobutene present in the starting stream into a mixture of C2-C6-olefins and butanes, b) firstly fractionating the resulting product stream by distillation to giv e a low boiler fraction A comprising C2-C4-olefins and butanes or C2-C3-olefins, which is discharged, and a high boiler fraction comprisi ng C4-C6-olefins and butanes, c) subsequently fractionating the high boiler fraction from b) by distillation to give a low boiler fraction B comprising butenes and butanes, an intermediate boiler fraction C comprising pentene and methylbutene and a high boiler fraction D comprising hexene and methylpentene, d) where all or part of the fractions B ...

Process for preparing C5-/C6-olefins

A process for preparing C5-/C6-olefins from an olefinic starting stream comprising C4-hydrocarbons comprises (a) carrying out a metathesis reaction in the presence of a metathesis catalyst comprising at least one compound of a metal of transition group VIb, VIIb or VIII of the periodic table of the elements so as to convert the 1-butene, 2-butene and isobutene present in the starting stream into a mixture of C2-C6-olefins and butanes, (b) firstly fractionating the resulting product stream by distillation to give a low boiler fraction A comprising C2-C4-olefins and butanes or C2-C3-olefins, which is discharged, and a high boiler fraction comprising C4-C6-olefins and butanes, (c) subsequently fractionating the high boiler fraction from (b) by distillation to give a low boiler fraction B comprising butenes and butanes, an intermediate boiler fraction C comprising pentene and methylbutene and a high boiler fraction D comprising hexene and methylpentene, (d) where all or part of the fractions ...

PRODUCTION OF LIGHT OLEFINS AND ISOPRENE FROM BUTANE

Process for the selective production of ethylene, propylene and isoprene from light hydrocarbons comprising: a) fractionating a butane fraction in a de-isobutanizer to obtain an enriched iso-butane fraction and an enriched normal-butane fraction, b) cracking said normal-butane fraction and optionally an ethane fraction, optionally a propane fraction, in a non-catalytic cracking zone to produce an olefin rich stream, c) treating said olefin rich stream in a separating section to recover : an ethylene stream, a propylene stream, d) transforming the recovered iso-butane of step a) into iso-butene or t-butyl hydroperoxide or partly into iso-butene and partly into t-butyl hydroperoxide, e) optionally reacting iso-butene of step d), if any, with formaldehyde to make isoprene, f) optionally reacting t-butyl hydroperoxide of step d), if any, with an olefin to give an epoxide and t-butanol and further separating t-butanol, or optionally having t-butyl hydroperoxide of step d), if any, decomposed ...

КОМПОЗИЦИИ И СПОСОБЫ ДЛЯ БИОЛОГИЧЕСКОГО ПОЛУЧЕНИЯ ИЗОПРЕНА

КАТАЛИЗАТОРЫ И СПОСОБ ИЗГОТОВЛЕНИЯ 2,3,3,3-ТЕТРАФТОРПРОПЕНА

... 1. Способ изготовления 2,3,3,3-тетрафторпропена, включающий (a) дегидрофторирование 1,1,1,2,3-пентафторпропана в присутствии катализатора дегидрофторирования, состоящего из оксида хрома (III) и щелочного металла, в количестве, эффективном для получения смеси продуктов, содержащей 2,3,3,3-тетрафторпропен и менее чем 20 частей на сто 1,1,1,2,2-пентафторпропан; и (b) выделение указанного 2,3,3,3-тетрафторпропена из смеси продуктов, полученной на этапе (a).2. Способ по п.1, где указанная смесь продуктов, содержащая 2,3,3,3-тетрафторпропен, содержит 1,1,1,2,2-пентафторпропан в количестве менее чем 10 частей на сто в расчете на моль.3. Способ по п.1, где указанный катализатор дегидрофторирования содержит от 0,1% до 2% щелочного металла, расположенного на поверхности указанного катализатора.4. Способ по п.1, где указанный катализатор дегидрофторирования содержит от 0,1% до 1% щелочного металла, расположенного на поверхности указанного катализатора.5. Способ по п.1, где указанный катализатор дегидрофторирования ...

СПОСОБ ОЧИСТКИ АЛЬФА-ОЛЕФИНА И КОМПОЗИЦИЯ ДЛЯ ОЧИСТКИ АЛЬФА-ОЛЕФИНА ДЛЯ НЕГО

Изобретение касается способа очистки альфа-олефина, где примеси удаляют при использовании комбинации из формованного активированного угля, характеризующегося площадью удельной поверхности, составляющей 1200 м2/г и более, средним диаметром частиц в диапазоне от 0,8 до 40 мм и объемом пор, составляющим более чем 0,6 см3/г согласно измерению при использовании метода адсорбирования азота, у которого поры, характеризующиеся диаметром пор, составляющим 2 нм и более, обуславливают 60% и более от всех пор; и композита оксид алюминия-цеолит, где композит оксид алюминия-цеолит представлен в форме бисерин, где активированный уголь и композит оксид алюминия-цеолит включают при массовом соотношении в диапазоне от 1:1 до 1:20. Изобретние также касается композиции для очистки альфа-олефина. Технический результат - улучшение удаления примесей в альфа-олефине. 2 н. и 8 з.п. ф-лы, 13 пр., 1 табл.

PROCESS FOR THE PRODUCTION OF 2-METHYLBUTENE-2

... 1279255 2-Methylbutene-2; isoprene BP CHEMICALS Ltd 8 May 1970 [24 June 1969] 31,7.7.6/69 Heading C5E 2-Methylbutene-2, an isoprene precursor, is obtained by the following process sequence:- (a) a feedstock comprising a mixture of n- and iso-butenes is purified to remove dienes and acetylenes, e.g. by passage with hydrogen over a supported nickel-catalyst in which a major proportion of the nickel is in elemental form, the catalyst having been modifiedby treatment with one or more of S,. H 2 S, CS 2 or organic sulphur compounds (in this case some isomerization of butene-1 to butene-2 also takes place); (b) contacting the purified feed at - 50‹ to + 50‹ C. with an alkali-metal/alumina catalyst to isomerize butene-1 to butene-2.; (c): co-disproportionating butene-2 and isobutene by contact at - 50‹ to +500‹ C. with a rhenium heptoxide/alumina catalyst ; (d) separating the stage (c) product to obtain 2-methylbutene-2 and unreacted butenes, e.g. by solvent extraction, urea adduction or fractional ...

PREPARATION OF ALIPHATIC OLEFINS FROM SATURATED HYDROCARBONS

PROCESS FOR DEHYDROGENATION OF ALKYL-CONTAINING COMPOUNDS USING MOLYBDENUM AND TUNGSTEN NITROSYL COMPLEXES

A process for the dehydrogenation of alkyl-containing compounds comprises reacting an alkyl-containing compound and a Group VI nitrosyl complex characterized as a transition metal complex having the composition Cp'M(NO)(R1)(R2), wherein Cp' is selected from certain substituted and unsubstituted ?5-cyclopentadienyl groups; M is W or Mo; and R1 and R2 are independently selected from CH2C(CH3)3; CH2Si(CH3)3; CH2(C6H5); CH3; hydrogen; and ?3-allyl; provided that if R1 is hydrogen, R2 is ?3-allyl; under conditions such that the alkyl-containing compound is converted to an olefin, and in particular embodiments, a terminal olefin. The dehydrogenation can be carried out using a neat and/or undried alkyl-containing compound and/or may be conducted under air, and does not require a sacrificial olefin to drive the reaction, thereby increasing convenience and decreasing cost in comparison with some other dehydrogenation processes.

CATALYTIC COMPOSITION COMPRISING NICKEL, A PHOSPHINE-TYPE LIGAND AND A LEWIS BASE, AND USE THEREOF IN AN OLEFIN OLIGOMERISATION METHOD

L'invention concerne une composition catalytique comprenant : au moins un précurseur de nickel de degré d'oxydation (+II), au moins un ligand phosphine de formule PR1R2R3dans lequel les groupements R1, R2 et R3, identiques ou différents entre eux, liés ou non entre eux, sont choisis parmi les groupements hydrocarbyles, et au moins une base de Lewis, ladite composition présentant un rapport molaire du ligand phosphine sur le précurseur de nickel inférieur ou égal à 5 et un rapport molaire de l'ensemble base de Lewis et ligand phosphine sur le précurseur de nickel supérieur ou égal à 5.

NEW COMPOSITION BASED ON NICKEL-PHOSPHINE LIGAND AND A LEWIS BASE AND ITS USE IN A PROCESS FOR THE OLIGOMERIZATION OF OLEFINS

L'invention concerne une composition catalytique comprenant : au moins un précurseur de nickel de degré d'oxydation (+II), au moins un ligand phosphine de formule PR1 R2R3 dans lequel les groupements R1, R2 et R3, identiques ou différents entre eux, liés ou non entre eux, et au moins une base de Lewis, ladite composition présentant un rapport molaire du ligand phosphine sur le précurseur de nickel inférieur ou égal à 5 et un rapport molaire de l'ensemble base de Lewis et ligand phosphine sur le précurseur de nickel supérieur ou égal à 5.

Verfahren zur Umwandlung von Toluol und Butadien in Styrol und 1-Penten.

ISOMERIZATION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE

Disclosed are processes for an isomerization reaction between (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene. Some of the disclosed processes include the step of contacting a feed stream with a heated surface, where the feed stream includes (E)1-chloro-3,3,3-trifluoropropene, (Z)1-chloro-3,3,3-trifluoropropene or mixtures thereof. The resulting product stream includes (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene, where the ratio of (E) isomer to (Z) isomer in the product stream is different than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another.

PROCESS FOR PREPARING ISOBUTENE BY CLEAVING MTBE-CONTAINING MIXTURES

The invention relates to a process for production of isobutene from MTBE-containing mixtures which comprises the following steps a) cracking, in a reactor R, a mixture obtained from an MTBE-containing feedstock (1a) and/or an MTBE-containing stream (13, 5), delivering a stream (6) of reaction products consisting of isobutene, methanol, MTBE and also by-products, wherein these consist of a1) high boilers having a boiling range above 55°C at a pressure of 0.1 MPa; a2) medium boilers having a boiling range from 12 to 55°C at a pressure of 0.1 MPa; and a3) low boilers having a boiling range below 12°C at a pressure of 0.1 MPa; b) separation of stream (6) by distillation into a stream (7) which contains the product isobutene and low boilers and a stream (8) which contains MTBE, methanol, medium boilers and high boilers; c) separating the stream (8) by distillation obtaining an MTBE-containing stream (10, 12) and a methanol-containing high-boiler stream (9, 11); d) recirculating an MTBE-containing ...

Способ получения олефиновых углеводоров C-C

Изобретение относится к способу получения олефиновых углеводородов С-Спутем дегидрирования соответствующих парафиновых углеводородов в кипящем слое алюмохромового катализатора, циркулирующего в системе, включающей реактор, регенератор (13) и узел восстановительно-десорбционной подготовки катализатора после регенератора (13), осуществляемой обработкой катализатора газом-восстановителем в режиме противотока с использованием горизонтальных секционирующих решеток (2). Способ характеризуется тем, что сразу после регенератора (13) обработку проводят в режиме направленной внутренней циркуляции катализатора с использованием вертикальной перегородки (6), разделяющей кипящий слой на подъемную (14) и напорную (15) секции, а затем - в режиме противотока при соотношении времен пребывания катализатора в указанных режимах, равном 0,3-3,0. Технический результат заключается в увеличении выходов целевого продукта - олефинов. 6 з.п. ф-лы, 4 пр., 1 табл.

Регенератор системы дегидрирования парафиновых углеводородов C3-C5 (варианты)

Изобретение относится к области нефтехимии, в частности к установкам дегидрирования парафиновых углеводородов С3-С5 в соответствующие олефиновые углеводороды, используемые для получения основных мономеров для синтетического каучука, а также при производстве полипропилена, метилтретичнобутилового эфира и др. Изобретение касается регенератора системы дегидрирования парафиновых углеводородов С3-С5 с кипящим слоем мелкодисперсного алюмохромового катализатора, имеющего цилиндрический корпус (1), трубопровод подачи воздуха (2) через распределитель (3) в нижней части кипящего слоя, трубопровод ввода топливного газа (4) через горелочное устройство (5) в верхней части кипящего слоя, транспортную трубу (7) ввода в верхнюю часть кипящего слоя газовзвеси из отработавшего в реакторе катализатора и транспортирующего воздуха (46), секционирующие решетки (8), расположенные по высоте кипящего слоя, содержащего при этом зону нагрева катализатора (9) путем сжигания подаваемого в горелочное устройство (5) ...

Способ подготовки катализатора в процессах дегидрирования парафиновых углеводородов С-Си устройство для его осуществления

Изобретение относится к области нефтехимии, в частности к установкам дегидрирования парафиновых углеводородов С-Св соответствующие олефиновые углеводороды, используемые для получения основных мономеров для синтетического каучука, а также при производстве полипропилена, метилтретичнобутилового эфира и др. Предлагается способ восстановительно-десорбционной подготовки алюмохромового катализатора в процессах дегидрирования парафиновых углеводородов С-Сс кипящим слоем при последовательном проведении циклов дегидрирования, регенерации и подготовки катализатора, циркулирующего в системе, содержащей реактор, регенератор 1 с нагревом катализатора в верхней части кипящего слоя путем сжигания кокса на поступающем из реактора отработанном катализаторе и подаваемого топливного газа с последующим окислением катализатора и десорбцией продуктов окисления подаваемым кислородсодержащим газом в нижней части кипящего слоя регенератора 1, а также устройство для подготовки регенерированного катализатора перед ...

Устройство для подготовки катализатора в процессах дегидрирования парафиновых углеводородов C- C

Изобретение относится к области нефтехимии, в частности к установкам дегидрирования парафиновых углеводородов С-Св соответствующие олефиновые углеводороды, используемые для получения основных мономеров для синтетического каучука, а также при производстве полипропилена, метилтретичнобутилового эфира и др. Предлагается устройство для восстановительно-десорбционной подготовки алюмохромового катализатора, циркулирующего в системе реактор - регенератор в процессах дегидрирования парафиновых углеводородов С-Сс кипящим слоем, включающее цилиндрические перегородки, установленные соосно цилиндрической обечайке корпуса регенератора 1, имеющее средство 16 для подачи регенерированного катализатора, барботеры-распределители 12 для подачи газа-восстановителя, барботеры-распределители 14 для подачи инертного газа, открытое кольцеобразное пространство 9 для отвода газообразных продуктов подготовки катализатора, патрубок 17 для выпуска подготовленного катализатора в реактор, при этом устройство может быть ...

Способ получения олефиновых углеводородов

Предложен способ получения олефиновых углеводородов дегидрированием соответствующих парафиновых углеводородов, осуществляемый в системе реактор-регенератор с кипящим слоем смеси мелкодисперсных алюмохромовых катализаторов с разными индексами истирания. Смесь мелкодисперсных алюмохромовых катализаторов включает катализатор с индексом истирания 15-30 мас.% в количестве 41-97 мас.% и катализатор с индексом истирания 1-10 мас.% - остальное. Технический результат - увеличение производительности установок дегидрирования углеводородов С-Си уменьшение затрат в производстве. 2 табл., 6 пр.

СПОСОБ ПОЛУЧЕНИЯ ХЛОРСОДЕРЖАЩЕГО КАТАЛИЗАТОРА, ПОЛУЧЕННЫЙ КАТАЛИЗАТОР И ЕГО ИСПОЛЬЗОВАНИЕ

LIGHT OLEFINIC HYDROCARBON ISOMERIZATION PROCESS

PROCESS FOR CONVERTING TOLUENE AND BUTADIENE TO STYRENE AND 1-PENTENE

T 2311 PROCESS FOR CONVERTING TOLUENE AND BUTADIENE TO STYRENE AND 1-PENTENE The invention relates to a process for converting toluene and butadiene to styrene and 1-pentene, which process comprises: a) reacting toluene and 1,3-butadiene in the presence of an alkali metal catalyst, b) contacting the reaction product of step a) with a double bond isomerization catalyst, c) reacting the isomerized product of step b) with ethylene in the presence of a disproportionation catalyst, and d) separating styrene and 1-pentene from the product of step c). MK1/T2311FF ...

Tertiary olefin isomers

NEW COMPOSITION BASED ON NICKEL-PHOSPHINE LIGAND AND A LEWIS BASE AND ITS USE IN A PROCESS FOR THE OLIGOMERIZATION OF OLEFINS

L'invention concerne une composition catalytique comprenant : au moins un précurseur de nickel de degré d'oxydation (+II), au moins un ligand phosphine de formule PR1 R2R3 dans lequel les groupements R1, R2 et R3, identiques ou différents entre eux, liés ou non entre eux, et au moins une base de Lewis, ladite composition présentant un rapport molaire du ligand phosphine sur le précurseur de nickel inférieur ou égal à 5 et un rapport molaire de l'ensemble base de Lewis et ligand phosphine sur le précurseur de nickel supérieur ou égal à 5. The invention relates to a catalytic composition comprising: at least one nickel precursor of oxidation state (+ II), at least one phosphine ligand of formula PR1 R2R3 in which the groups R1, R2 and R3, which are identical or different from each other, linked or not linked to each other, and at least one Lewis base, said composition having a molar ratio of the phosphine ligand to the nickel precursor less than or equal to 5 and a molar ratio of the whole Lewis base and phosphine ligand to the precursor of nickel greater than or equal to 5.

CONVERSION OF LINEAR ACYCLIC OLEFIN TO BRANCHED CHAIN OLEFIN

Isoamylenes from butenes

A feed of mixed butenes is subjected to a combination process comprising skeletal isomerization, disproportionation, and appropriate fractionation to yield separate streams of isobutane, normal butane, and isoamylenes which can be dehydrogenated to isoprene.

СПОСОБ ПОЛУЧЕНИЯ ХЛОРСОДЕРЖАЩЕГО КАТАЛИЗАТОРА, ПОЛУЧЕННЫЙ КАТАЛИЗАТОР И ЕГО ИСПОЛЬЗОВАНИЕ

Изобретение относится к способу получения хлорсодержащего катализатора. Описан способ получения хлорсодержащего катализатора, включающий следующие стадии: (а) подача катализатора Фишера-Тропша, содержащего: диоксид титана, от 5 до 35 массовых процентов кобальта, более предпочтительно в диапазоне от 10 до 35 массовых процентов, даже более предпочтительно в диапазоне от 15 до 30 массовых процентов кобальта, еще более предпочтительно в диапазоне от 15 до 25 массовых процентов кобальта, при расчете на совокупную массу катализатора, в диапазоне от 0,1 до 15 массовых процентов промотора, предпочтительно в диапазоне от 0,5 до 5 массовых процентов промотора, при расчете на совокупную массу катализатора, при этом промотор содержит марганец или рений, наиболее предпочтительно марганец; (b) импрегнирование катализатора при использовании одного или более растворов, содержащих хлорид-ионы, вплоть до содержания катализатором 0,13-10 массовых процентов элементарного хлора при расчете на совокупную массу ...

Устройство для подготовки катализатора в процессах дегидрирования парафиновых углеводородов С-С

Предложено устройство для восстановительно-десорбционной подготовки алюмохромового катализатора в процессах дегидрирования парафиновых углеводородов С-Сс кипящим слоем, циркулирующего в системе, содержащей реактор, регенератор, включающее вертикальные перегородки для циркуляции катализатора, барботеры-распределители для подачи инертного газа и газа-восстановителя, где устройство имеет корпус, содержащий вертикально установленную обечайку (2), верхнее (4) и нижнее (3) днища, средство (16) для подачи регенерированного катализатора из регенератора в верхней части корпуса, установленные на нижнем днище (3) корпуса соосно обечайке (2) корпуса первую перегородку (5) с отверстиями (7) для перетока катализатора в ее нижней части и внутри ее, на расстоянии, - вторую перегородку (6), при этом верхний торец (22) первой перегородки (5) расположен выше средства (16) для подачи регенерированного катализатора и выше верхнего торца (21) второй перегородки (6), причем между обечайкой (2) корпуса устройства ...

Способ получения олефиновых углеводородов

Предложен способ получения олефиновых углеводородов дегидрированием соответствующих парафиновых углеводородов, осуществляемый в кипящем слое мелкодисперсного окисного алюмохромового катализатора, циркулирующего в системе реактор-регенератор, включающий выжиг кокса и окисление катализатора кислородом воздуха в регенераторе, восстановление окисленного катализатора водород-метансодержащим газом, десорбцию продуктов восстановления и реакции инертным газом, подпитку свежим катализатором. Процесс осуществляют с выводом части циркулирующего катализатора из системы в количестве 0,07-0,8 мас. % от подачи сырья в реактор для получения олефиновых углеводородов и с последующей подпиткой ее катализатором, получаемым методом формования из золя и содержащим 0,5-3,5 мас. % шестивалентного хрома, в количестве, обеспечивающем постоянство количества катализатора в системе, и дополнительно катализатором, получаемым методом пропитки носителя и содержащим 1,2-4,0 мас. %. шестивалентного хрома, в количестве, ...

МАКРО- И МЕЗОПОРИСТЫЙ КАТАЛИЗАТОР С ОДНОРОДНО РАСПРЕДЕЛЕННОЙ АКТИВНОЙ НИКЕЛЕВОЙ ФАЗОЙ И СРЕДНИМ ДИАМЕТРОМ МАКРОПОР ОТ 50 ДО 300 И ЕГО ПРИМЕНЕНИЕ В ГИДРИРОВАНИИ УГЛЕВОДОРОДОВ

Combined process of manufacture of 2-methyl-1-butylene and aluminium trialkyles

PROCESS FOR THE PRODUCTION OF 2-METHYLBUTENE-2

Catalysts

A process for the hydrogenation of an unsaturated organic compound to produce a more saturated compound (preferably the conversion of alkynes to alkenes) comprising the step of contacting a process feed stream comprising the unsaturated compound with hydrogen in the presence of a catalyst comprising at least two metals selected from the group consisting of platinum, palladium, gold, titanium and tin supported on a catalyst support material, wherein the catalyst is made by depositing the metals on the support by sputtering. Suitable catalyst supports include carbon, alumina, silica, kieselguhr, titania, zirconia, magnesia, iron oxide, a rare-earth oxide, a clay, cement, diatomaceous earth, zeolite and silicon carbide. Preferred sputtered hydrogenation catalysts are palladium-gold (Pd-Au) and palladium-titanium (Pd-Ti) on particulate alumina or titanium dioxide (TiO2). Preferably the catalyst is made by cluster beam sputtering methods. The hydrogenation of 3-hexyne-1-ol to 3-hexene-1-ol and ...

PREPARATION OF C5-/C6 OLEFINS

A process for preparing C5-/C6-olefins from an olefinic starting stream comprising C4-hydrocarbons comprises a) ~carrying out a metathesis reaction in the presence of a metathesis catalyst comprising at least one compound of a metal of transition group VIb, VIIb or VIII of the Periodic Table of the Elements so as to convert the 1-butene, 2-butene and isobutene present in the starting stream into a mixture of C2-C6-olefins and butanes, b) ~firstly fractionating the resulting product stream by distillation to gi ve a low boiler fraction A comprising C2-C4-olefins and butanes or C2- C3-olefins, which is discharged, and a high boiler fraction comprising C4-C6-olefins and butanes, c) ~subsequently fractionating the high boiler fraction from b) by distillation to give a low boiler fraction B comprising butenes and butanes, an intermediate boiler fraction C comprising pentene and methylbutene and a high boiler fraction D comprising hexene and methylpentene, d) ~where all or part of the fractions ...

PRODUCTION OF LIGHT OLEFINS AND ISOPRENE FROM BUTANE

Process for the selective production of ethylene, propylene and isoprene from light hydrocarbons comprising: a) fractionating a butane fraction in a de-isobutanizer to obtain an enriched iso-butane fraction and an enriched normal-butane fraction, b) cracking said normal-butane fraction and optionally an ethane fraction, optionally a propane fraction, in a non-catalytic cracking zone to produce an olefin rich stream, c) treating said olefin rich stream in a separating section to recover : an ethylene stream, a propylene stream, d) transforming the recovered iso-butane of step a) into iso-butene or t-butyl hydroperoxide or partly into iso-butene and partly into t-butyl hydroperoxide, e) optionally reacting iso-butene of step d), if any, with formaldehyde to make isoprene, f) optionally reacting t-butyl hydroperoxide of step d), if any, with an olefin to give an epoxide and t-butanol and further separating t-butanol, or optionally having t-butyl hydroperoxide of step d), if any, decomposed ...

PROCESS FOR PRODUCING MIDDLE DISTILLATES FROM A FEED COMPRISING BUTANOL, AND PENTANOL

L'invention concerne un procédé de production de bases hydrocarbonées distillats moyens à partir d'une charge comprenant du butanol et du pentanol, ledit procédé comprenant au moins : a) une étape de déshydratation isomérisante de ladite charge de manière à produire un effluent majoritairement oléfinique, b) une étape de séparation de l'eau présente dans ledit effluent oléfinique, c) une étape de purification de l'effluent liquide organique issu de l'étape b) de manière à produire un effluent organique purifié, d) une première étape d'oligomérisation sélective d'une charge comprenant au moins une partie de l'effluent organique purifié issu de l'étape c), la totalité de l'effluent issu de l'étape g) et au moins une partie du produit léger issu de l'étape f) de manière à produire un effluent de première oligomérisation, e) une deuxième étape d'oligomérisation dudit effluent de première oligomérisation, de manière à produire un effluent de deuxième oligomérisation, f) une étape de fractionnement ...

아이소프렌의 생물학적 생성을 위한 조성물 및 방법

... 본 개시내용은 탄소 공급원료, 예컨대 메탄 또는 천연 가스를 이용하는 메탄영양 박테리아를 사용하여 아이소프렌을 생물학적으로 제조하기 위한 조성물 및 방법을 제공한다.

MULTIPLE-STAGE CATALYST SYSTEM AND A PROCESS FOR PROPENE PRODUCTION

Title: MULTIPLE-STAGE CATALYST SYSTEM AND A PROCESS FOR PROPENE PRODUCTION (57) : Processes and multiple-stage catalyst systems are disclosed for producing propene by at least partially isomerizing butene in an isomer- ization reaction zone having an isomerization catalyst to form an isomer- 110 ization reaction product, at least partially metathesizing the isomerization 12 j-114 reaction product in a metathesis reaction zone having a metathesis catalyst to form a metathesis reaction product, and at least partially cracking the metathesis reaction product in a cracking reaction zone having a cracking catalyst. The isomerization catalyst may be MgO, and the metathesis cata- lyst may be a mesoporous silica catalyst support impregnated with a metal oxide. The metathesis reaction zone may be downstream of the isomeriza- tion reaction zone, and the cracking reaction zone may be downstream of the metathesis reaction zone. —124 120 2 130 -- NT 122-v 1302 130 - A_ 2 116 FIG. 1 W O 20 18/ 13657 ...

Producing C5 olefins from steam cracker C5 feeds—a process using a catalytic distillation reactor system

Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control ...

PREPARATION OF ALIPHATIC OLEFINS FROM SATURATED HYDROCARBONS

PRODUCTION OF 3-METHYL-1-BUTENE

The invention relates to a method for producing 3-methyl-1-butene, according to which a feed material containing 3-methyl-1-butanol is provided, the feed material is subjected to a catalytic dehydration, whereby a reaction product is created, the reaction product containing at least the following constituents: 3-methyl-1-butene, di-(3-methylbutyl)-ether, water and non-reacted 3-methyl-1-butanol, the reaction product is separated by distillation and water separation into a low-boiling fraction, a high-boiling fraction and a water fraction, the low-boiling fraction containing 3-methyl-1-butene, the high-boiling fraction containing di-(3-methylbutyl)-ether and non-reacted 3-methyl-1-butanol, and the water fraction containing essentially water, and the high-boiling fraction is at least partially guided back into the dehydration process.

Process for the preparation of C5-/C6-olefins

Production of pentene and hexene from olefin having four carbon involves disproportionation of butene isomers on a supported transition metal catalyst followed by two-stage fractional distillation The production of 5C/6C olefins from a 4C olefin-containing product stream involves disproportionation of 1-, 2- and iso-butene on a Group VIb, VIIb or Sub-Group VIII metal-based catalyst followed by distillation to give a 4-6C fraction which is then distilled to give hexene and methylpentene as a high-boiling fraction. A process (A) for the production of 5C/6C olefins from 4C olefins involves: (a) disproportionation of 1-butene, 2-butene and isobutene in a 4C olefin product stream in presence of a disproportionation catalyst containing Group VIb, VIIb or Sub-Group VIII metal compound(s), to give a mixture of 2-6C olefins and butanes; (b) distillation to give a low-boiling fraction (A) comprising 2-3C olefins or 2-4C olefins and butanes, which is removed, and a high-boiling fraction consisting ...

PREPARATION OF ALIPHATIC OLEFINS FROM SATURATED HYDROCARBONS

CATALYSTS AND PROCESS TO MANUFACTURE 2,3,3,3-TETRAFLUOROPROPENE

Disclosed is a process for the manufacture of 2,3,3,3-tetrafluoropropene comprising: (a) dehydrofluorinating 1,1,1,2,3-pentafluoropropane in the presence of a dehydrofluorination catalyst comprised of chromium (III) oxide, and alkali metal, to produce a product mixture comprising 2,3,3,3-tetrafluoropropene and less than 20 parts per hundred 1,3,3,3-tetrafluoro-1-propene; and (b) recovering said 2,3,3,3-tetrafluoropropene from the product mixture produced in (a).

ISOMERIZATION OF 1-CHLORO-3,3,3-TRIFLUOROPROPENE

Disclosed are processes for an isomerization reaction between (E)1-chloro-3,3,3-trifluoropropene and (Z)1--chloro-3,3,3-trifluoropropene. Some of the disclosed processes include the step of contacting a feed stream with a heated surface, where the feed stream includes (E)1-chloro-3,3,3-trifluoropropene, (Z)1-chloro-3,3,3-trifluoropropene or mixtures thereof. The re-sulting product stream includes (E)1-chloro-3,3,3-trifluoropropene and (Z)1-chloro-3,3,3-trifluoropropene, where the ratio of (E) isomer to (Z) isomer in the product stream is different than the ratio feed stream. The (E) and (Z) isomers in the product stream may be separated from one another.

ISOBUTENE AND/OR ISOAMYLENES FROM CAT POLY GASOLINE

The conversion of cat poly gasoline to isobutene using an olefin disproportionation reaction is increased by subjecting a heavy olefin fraction separated from the olefin disproportionation effluent to skeletal isomerization prior to recycle of said fraction to the olefin disproportionation reactor. In a preferred embodiment, isoamylenes are advantageously prepared using a second olefin disproportionation step which employs the isobutene-containing stream as the feedstock.

Production of 3-Methyl-1-Butene

... 1,192,578. Olefins. PHILLIPS PETROLEUM CO. 18 Sept., 1967 [19 Sept., 1966], No. 42409/67. Heading C5E. 3-Methyl-1-butene is prepared by catalytically dimerizing propylene to obtain at least some 4- methyl-2-pentene, which is then contacted with ethylene in the presence of an olefin disproportionation catalyst to produce 3-methyl-1-butene as desired product and propylene, which may be recycled to the dimerization. Other products of the dimerization may be treated as follows. 4-methyl-1-pentene may be recovered as product by fractionation, or may be isomerized to 4-methyl-2-pentene which is fed to the disproportionation. 2 - Methyl - 2 - and - 1 - pentenes may be recovered as products by fractionation and, either removed from the process, or may be isomerized to additional 4-methyl-2-pentene which is fed to the disproportionation. Suitable catalysts for the various reactions are: Dimerization: tripropyl aluminium, Na/K alloy, or #-allyl nickel iodide/triphenyl phosphine/ethyl aluminium dichloride ...

니켈, 포스핀-유형 리간드 및 루이스 염기를 포함하는 촉매 조성물, 및 올레핀 올리고머화 방법에서의 그 용도

... 본 발명은 산화수가 (+II) 인 적어도 하나의 니켈 전구체; 하이드로카빌 기로부터 선택되는 화학식 PR1R2R3 (식 중, R1, R2 및 R3 기는 동일할 수 있거나 상이할 수 있고, 서로 임의 결합됨) 을 갖는 적어도 하나의 포스핀 리간드; 및 적어도 하나의 루이스 염기를 포함하는 촉매 조성물에 관한 것이다. 상기 조성물은 5 이하의 니켈 전구체에 대한 포스핀 리간드의 몰비 및 5 이상의 포스핀 리간드에 대한 루이스 염기의 몰비를 갖는다.

1-클로로-3,3,3-트리플루오로프로펜의 이성질화

... (E)1-클로로-3,3,3-트리플루오로프로펜 및 (Z)1-클로로-3,3,3-트리플루오로프로펜간의 이성질화 반응에 대한 방법이 개시된다. 개시된 제조방법의 일부는 가열된 표면과 공급 스트림이 접촉하는 단계를 포함하며, 여기서, 상기 공급 스트림은 (E)1-클로로-3,3,3-트리플루오로프로펜, (Z)1-클로로-3,3,3-트리플루오로프로펜 또는 이들의 혼합물을 포함한다. 상기 얻어지는 생성물 스트림은 (E)1-클로로-3,3,3-트리플루오로프로펜 및 (Z)1-클로로-3,3,3-트리플루오로프로펜을 포함하며, 여기서 생성물 스트림내에서 (E) 이성질체 대 (Z) 이성질체의 비율은 공급 스트림과 상이하다. 생성물 스트림에서 상기 (E) 및 (Z) 이성질체는 각각 분리될 수 있다.

CONVERSION OF ISOBUTENE TO ISOMYLENE

Process for the preparation of 2-methyl-1-butene and trialkylaluminium compounds

... 2-methylbutene-1 and trialkyl aluminiums having from 5-100 carbon atoms in each alkyl group are obtained by reacting propylene with triethyl aluminium to form a mixture of hydrocarbons and alkyl aluminium compounds, distilling the mixture to recover 2-methylbutene-1, propylene which may be reused, propylene dimer, and alkyl aluminiums and reacting the latter with ethylene to form higher trialkyl aluminiums. In the first stage the propylene to triethyl aluminium mol ratio may be 2-100 : 1, pressure 15-4,000 p.s.i.g. and temperature 70 DEG C.-300 DEG C. with reaction times of 5 minutes to 8 hours while in the second stage the ethylene to alkyl aluminiums mol ratio may be 1-1000 : 1, the pressure 200-4,000 p.s.i.g. and the temperature 80 DEG C.-160 DEG C. The trialkyl aluminium products may be hydrolysed to alcohols and aluminium hydroxide, or reacted with ethylene in the presence of Raney nickel to give a -olefins and triethyl aluminium or with bromine to give alkyl bromides and aluminium ...

Catalysts

Compositions and methods for biological production of isoprene

The present disclosure provides compositions and methods for biologically producing isoprene using methanotrophic bacteria that utilize carbon feedstock, such as methane or natural gas.

Process for converting toluene and butadiene to styrene and 1-pentene

Process for preparing a chlorine comprising catalyst, the prepared catalyst, and its use

The invention concerns a process for preparing a chlorine comprising catalyst by (a) providing a Fischer-Tropsch catalyst comprising titania and at least 5 weight percent cobalt; (b) impregnating the catalyst with a solution comprising chloride ions;and (c) heating the impregnated catalyst at a temperature in the range of between 100 and 500 °C for at least 5 minutes up to 2 days. The prepared catalyst preferably comprises 0.13 3 weight percent of the element chlorine. The invention further relates to the prepared catalyst and its use.

Isoamylenes from butenes

A feed of mixed butenes is separated by molecular sieves into a butene-1 stream and a stream comprising butenes-2 and isobutene. The butenes-2 and isobutene are disproportionated to yield isoamylenes. The isoamylenes can be converted to isoprene.

CONVERSION OF OLEFINIC HYDROCARBONS

LIGHT OLEFINIC HYDROCARBON ISOMERIZATION PROCESS

Catalytic composition comprising nickel, a phosphine-type ligand and a lewis base, and use thereof in an olefin oligomerisation method

Process for preparing isobutene by cleaving mtbe-containing mixtures

Methods of making spray-dried metathesis catalysts and uses thereof

Provided here are catalyst compositions containing tungsten oxide on silica supports and prepared by spray drying a mixture containing a tungsten precursor, silica support, and a surfactant. Also provided here are methods of using the catalytic compositions, prepared by spray drying, in an olefin metathesis process to produce propylene from butenes.

PROCESS FOR MAKING BIOBASED ISOPRENE

Processes are described for making biobased isoprene, wherein a biobased isobutene prepared from acetic acid in the presence of a catalyst is combined with a formaldehyde source to form a reaction mixture, and the reaction mixture is reacted to yield biobased isoprene. In certain embodiments, methyl-tert-butyl ether prepared by reacting the same biobased isobutene with methanol serves as a formaldehyde source, being oxidatively cracked to produce formaldehyde as well as isobutene for being converted to the biobased isoprene. 1. Wholly biobased isoprene.2. Wholly biobased butyl rubber.3. A process for making isoprene , comprising:converting acetic acid to isobutene in the presence of a catalyst; andreacting the isobutene with formaldehyde.4. A process comprising copolymerizing isobutene made from acetic acid in the presence of a catalyst and isoprene prepared according to .5. A process according to claim 3 , wherein the acetic acid is obtained at least in part by fermentation of one or more of the five- and six-carbon sugars.6. A process according to claim 3 , wherein the acetic acid is obtained at least in part through an oxidative fermentation from ethanol.7. A process according to claim 3 , wherein the acetic acid is obtained at least in part by carbonylation of methanol.8. A process according to claim 7 , further comprising combining carbon dioxide and hydrogen under conditions which are effective for making at least a portion of the methanol which is carbonylated to make acetic acid.9. A process according to either of or claim 7 , further comprising combining carbon dioxide and hydrogen under conditions which are effective for making methanol claim 7 , and oxidizing the methanol so formed to provide at least a portion of the formaldehyde that is reacted with the isobutene.10. A process as in claim 3 , wherein the catalyst for converting the acetic acid to isobutene is a ZnZrOmixed oxide catalyst.11. A process as in claim 10 , wherein the catalyst contains less ...

Herstellung von 3-Methyl-1-buten

Die Erfindung betrifft ein Verfahren zur Herstellung von 3-Methyl-1-buten, bei welchem ein Einsatzstoff, enthaltend 3-Methyl-1-butanol, bereitgestellt wird; bei welchem der Einsatzstoff einer katalytischen Dehydratisierung unterworfen wird, wodurch ein Reaktionsprodukt entsteht; wobei das Reaktionsprodukt zumindest die folgenden Komponenten enthält: 3-Methyl-1-buten, Di-(3-methylbutyl)-ether, Wasser und nicht umgesetztes 3-Methyl-1-butanol; bei welchem das Reaktionsprodukt durch Destillation und Wasserabscheidung in eine Leichtsiederfraktion, in eine Schwersiederfraktion und in eine Wasserfraktion getrennt wird; wobei die Leichtsiederfraktion 3-Methyl-1-buten enthält; wobei die Schwersiederfraktion Di-(3-methylbutyl)-ether und nicht umgesetztes 3-Methyl-1-butanol enthält; wobei die Wasserfraktion im Wesentlichen Wasser enthält; und bei welchem die Schwersiederfraktion zumindest teilweise in die Dehydratisierung zurückgeführt wird.

Process to manufacture 2,3,3,3-tetrafluoropropene

Disclosed is a process for the manufacture of 2,3,3,3-tetrafluoropropene comprising: (a) dehydrofluorinating 1,1,1,2,3-pentafluoropropane in the presence of a dehydrofluorination catalyst comprised of chromium (III) oxide, and alkali metal, to produce a product mixture comprising 2,3,3,3-tetrafluoropropene and less than 20 parts per hundred 1,3,3,3-tetrafluoro-1-propene; and (b) recovering said 2,3,3,3-tetrafluoropropene from the product mixture produced in (a).

ブテンから軽質オレフィンとイソプレンを製造する方法

... 【課題】軽質炭化水素からエチレン、プロピレン、イソプレンを選択製造。 【解決手段階】(a) 脱イソブタン装置でブタン画分を分別してイソブタン豊富分とn-ブタン豊富分とし、(b) 非触媒クラッキング帯域でn-ブタンリッチ分を接触分解してオレフィン豊富流とし、(c)分離セクションでオレフィン豊富流を処理してエチレン流とプロピレン流とを回収し、(d)aで回収したイソブタンをイソブテンまたはt-ブチルヒドロペルオキシドに変え、(e)dのイソブテンをホルムアルデヒドと反応させてイソプレンとし、(f)dのt-ブチル・ヒドロペルオキシドと反応させてエポキシドとt-ブタノールとし、t-ブタノールを分離し、(g) fで回収したt-ブタノールの脱水でイソブテンとし、このイソブテンをホルムアルデヒドと反応させてイソプレンとし、(h)dのイソブテンと(c)で回収したプロピレンを不均化し、イソアミレン流を分離し、イソアミレン流の脱水素でイソプレンへ変換。 ...

Producing C5 olefins from steam cracker C5 feeds

Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control ...

PRODUCING C5 OLEFINS FROM STEAM CRACKER C5 FEEDS

Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control schemes, are also described. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. A process for producing C5 olefins from a steam cracker C5 feed , the process comprising:reacting a mixed hydrocarbon stream comprising cyclopentadiene, linear C5 olefins, cyclic C5 olefins, and C6+ hydrocarbons in a dimerization reactor wherein cyclopentadiene is dimerized to form dicyclopentadiene, producing a dimerization reactor effluent;separating the dimerization reactor effluent in a fraetionator to form a first fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising the linear and cyclic C5 olefins and linear C5 dienes;feeding the second fraction, a saturated hydrocarbon diluent stream, and hydrogen to a catalytic ...

스팀 크래커 C5 공급물로부터 C5 올레핀류의 제조

... 스팀 크래커 C5 공급물로부터의 C5 올레핀류의 제조는 사이클로펜타디엔, C5 올레핀류 및 C6+ 탄화수소류를 포함하는 혼합 탄화수소 스트림을 이량체화 반응기 내에서 반응시키되, 사이클로펜타디엔은 디사이클로펜타디엔으로 이량체화되는 단계를 포함할 수 있다. 상기 이량체화 반응기 유출물은 C6+ 탄화수소류 및 디사이클로펜타디엔을 포함하는 분획 및 C5 올레핀류 및 C5 디엔류를 포함하는 제 2 분획으로 분리될 수 있다. 상기 제 2 분획, 포화 탄화수소 희석제 스트림 및 수소는 상기 제 2 분획 내에 함유된 포화 탄화수소 희석제, 환형 C5 올레핀류 및 C5 디엔류로부터 선형 C5 올레핀류를 분리하는 동시에 C5 디엔류를 선택적으로 수소화하기 위한 촉매적 증류 반응기 시스템에 공급될 수 있다. 상기 선형 C5 올레핀류를 포함하는 탑정 증류액 및 환형 C5 올레핀류를 포함하는 탑저 생성물은 상기 촉매적 증류 반응기 시스템으로부터 회수된다. 촉매 구성 및 제어 방안들을 포함하는 C5 올레핀 시스템 및 공정들의 기타 양태들이 또한 개시되어 있다.

ISOBUTENE AND/OR ISOAMYLENES FROM CAT POLY GASOLINE

Producing C5 olefins from steam cracker C5 feeds

Producing C5 olefins from steam cracker C5 feeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a fraction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control ...

Method for producing alpha-olefin low polymer

An object of the present invention is to provide a method for suppressing the precipitation of polymers with a high concentration dissolved in a solvent in the operation termination step and suppressing the blockage of the apparatus by the polymers even when the polymers with a high concentration are precipitated, and the invention relates to a method for producing an α-olefin low polymer comprising a production operation step and an operation termination step, wherein the supply position of a supply liquid to a distillation column in the operation termination step is changed to a position lower than the supply position of a supply liquid to the distillation column in the production operation step.

METHOD FOR PRODUCING ALPHA-OLEFIN LOW POLYMER

An object of the present invention is to provide a method for efficiently producing an α-olefin low polymer at a high α-olefin low polymer selectivity and a high α-olefin low polymer yield with suppressing the deterioration of catalytic activity with time, and the invention relates to a method for producing an α-olefin low polymer, which comprises performing a low polymerization reaction of an α-olefin in the presence of a catalyst containing a chlorine atom-containing compound (d) and a reaction solvent, wherein the chlorine atom-containing compound (d) that are at least two compounds having specific chlorine atom elimination rate is supplied in predetermined ratio. 2. The method for producing an α-olefin low polymer according to claim 1 , wherein the first chlorine atom-containing compound (d)-1 contains a chlorinated typical metal atom-containing compound and the second chlorine atom-containing compound (d)-2 is a chlorinated hydrocarbon compound.3. The method for producing an α-olefin low polymer according to claim 1 , wherein both of the first chlorine atom-containing compound (d)-1 and the second chlorine atom-containing compound (d)-2 are a chlorinated hydrocarbon compound.4. The method for producing an α-olefin low polymer according to claim 2 , wherein the chlorine atom-containing compound (d) contains at least one of a chlorinated saturated hydrocarbon compound and a chlorinated benzyl compound.5. The method for producing an α-olefin low polymer according to claim 1 , wherein the alkylaluminum compound (c) is triethylaluminum.6. The method for producing an α-olefin low polymer according to claim 1 , wherein the transition metal in the transition metal atom-containing compound (a) contains chromium and the nitrogen atom-containing compound (b) contains a pyrrole compound.7. The method for producing an α-olefin low polymer according to claim 1 , wherein the α-olefin is ethylene and the α-olefin low polymer is 1-hexene. The present invention relates to a ...

COMPOSITIONS AND METHODS FOR BIOLOGICAL PRODUCTION OF ISOPRENE

The present disclosure provides compositions and methods for biologically producing isoprene using methanotrophic bacteria that utilize carbon feedstock, such as methane or natural gas.

PRODUCTION METHOD OF ALPHA-OLEFIN LOW POLYMER AND PRODUCTION APPARATUS

The present invention relates to a method and an apparatus for producing an α-olefin low polymer by subjecting an α-olefin to low polymerization reaction in the presence of a catalyst in a liquid phase part within a reactor, and the present invention relates to a method and an apparatus for producing an α-olefin low polymer, such as 1-hexene, etc., by subjecting an α-olefin, such as ethylene, etc., to low polymerization reaction, in which the formation of a polymer on an upper tube plate surface of a shell and tube type heat exchanger that is used for heat removal is suppressed, thereby performing a continuous operation stably over a long period of time. 1. A method for producing an α-olefin low polymer by subjecting an α-olefin to low polymerization reaction in the presence of a catalyst , the method comprising:a step of withdrawing a gas of a gas phase part within a reactor, introducing the gas for cooling into a shell and tube type heat exchanger, and circulating and supplying an obtained condensed liquid into the reactor,wherein the heat exchanger includes jet nozzles for supplying atomized droplets between a gas supply port and a tube plate,{'sup': '3', 'the gas is supplied as a gas having a density of 20 kg/mor more at a gas flow rate of 1 m/s or more from the gas supply port, and'}{'sup': '2', 'the atomized droplets are supplied from the jet nozzles provided in five or more places per 1.00 mof an area of the tube plate.'}2. A method for producing an α-olefin low polymer by subjecting an α-olefin to low polymerization reaction in the presence of a catalyst within a reactor , the method comprising:a step of withdrawing a part of a gas of a gas phase part within a reactor, introducing the gas for cooling into a shell and tube type heat exchanger, and circulating and supplying an obtained condensed liquid into the reactor,wherein the heat exchanger includes: a cylindrical shell; an upper tube plate and a lower tube plate disposed on an upper end side and a lower ...

REACTIVATING PROPANE DEHYDROGENATION CATALYST

Increase propane dehydrogenation activity of a partially deactivated dehydrogenation catalyst by heating the partially deactivated catalyst to a temperature of at least 660° C., conditioning the heated catalyst in an oxygen-containing atmosphere and, optionally, stripping molecular oxygen from the conditioned catalyst. 1. A process for dehydrogenating an alkane , the process comprising:a. placing an alkane in operative contact with a heated alkane dehydrogenation catalyst in a reactor, the alkane dehydrogenation catalyst comprising a Group VIII noble metal and a Group IIIA metal;b. removing from the reactor a partially deactivated catalyst, wherein at least a portion of the partially deactivated catalyst has coke deposited thereon; (1) heating at least a portion of the partially deactivated catalyst in a regenerator to a temperature of at least 660 degrees Celsius using heat at least partially generated by combusting a fuel source, wherein the fuel source is not the coke, said heating yielding a heated, further deactivated dehydrogenation catalyst which has an alkane dehydrogenation activity that is less than that of the partially deactivated catalyst; and', '(2) subjecting at least a portion of the heated, further deactivated catalyst to a conditioning step which comprises maintaining at least a portion of the heated, further deactivated dehydrogenation catalyst at a temperature of at least 660 degrees Celsius while exposing at least a portion of the heated, further deactivated dehydrogenation catalyst to a flow of an oxygen-containing gas for a period of time greater than two minutes to yield an oxygen-containing reactivated dehydrogenation catalyst that has an activity for dehydrogenating alkane that is greater than that of either the partially deactivated catalyst or the heated, further deactivated catalyst., 'c. rejuvenating at least a portion of the partially deactivated catalyst, yielding a rejuvenated dehydrogenation catalyst, by2. The process of claim 1 , ...

OLEFIN CONVERSION PROCESS

Processes for the production of olefins are disclosed, which may include: contacting a hydrocarbon mixture comprising linear butenes with an isomerization catalyst to form an isomerization product comprising 2-butenes and 1-butenes; contacting the isomerization product with a first metathesis catalyst to form a first metathesis product comprising 2-pentene and propylene, as well as any unreacted Colefins, and byproducts ethylene and 3-hexene; and fractionating the first metathesis product to form a C3-fraction and a C5 fraction comprising 2-pentene. The 2-pentene may then be advantageously used to produce high purity 1-butene, 3-hexene, 1-hexene, propylene, or other desired products. 1. A system for the production of olefins , the system comprising: contacting a hydrocarbon mixture comprising linear butenes with an isomerization catalyst to form an isomerization product comprising 2-butenes and 1-butenes; and', {'sub': '4', 'contacting the isomerization product with a first metathesis catalyst to form a first metathesis product comprising 2-pentene and propylene, as well as any unreacted Colefins, and byproducts ethylene and 3-hexene;'}], 'an isomerization/metathesis reaction system fora fractionation system for fractionating the first metathesis product to form a C3-fraction and a C5 fraction comprising 2-pentene as essentially the only C5 olefin; anda flow conduit for feeding at least a portion of the C3-fraction to the isomerization/metathesis reaction system.2. The system of claim 1 , wherein the flow conduit for recycling the C3-fraction is configured to introduce the C3-fraction upstream of the isomerization catalyst claim 1 , upstream of the metathesis catalyst claim 1 , or both.3. The system of claim 1 , further comprising a metathesis reactor for contacting ethylene and the C5 fraction with a second metathesis catalyst claim 1 , which may be the same or different than the first metathesis catalyst claim 1 , to convert at least a portion of the 2-pentene and ...

LIGAND COMPOUND, ORGANIC CHROMIUM COMPOUND, CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION, AND METHOD FOR OLIGOMERIZING OLEFIN USING SAME

The present invention relates to a ligand compound, a catalyst system for olefin oligomerization and a method for oligomerizing an olefin using same. The catalyst system for olefin oligomerization according to the present invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thus enabling more efficient preparation of alpha-olefins. 2. The ligand compound of claim 1 , whereinR5 is an alkyl group having 1 to 10 carbon atoms, an arylsilyl group having 6 to 15 carbon atoms, or an alkylarylsilyl group having 6 to 15 carbon atoms, andR6 is an alkylsilylene having 1 to 10 carbon atoms, an arylsilylene having 6 to 15 carbon atoms, or an alkylarylsilylene having 6 to 15 carbon atoms.4. The organic chrome compound of claim 3 ,wherein the organic chromium compound is in a form in which at least one unshared electron pair among N, P, and O in the ligand compound of Chemical Formula 1 is coordinated to a chromium atom.5. A catalyst system for olefin oligomerization comprising{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a source of chromium, the ligand compound of , and a cocatalyst.'}6. The catalyst system for olefin oligomerization of claim 5 ,wherein the source of chromium includes at least one compound selected from the group consisting of chromium (III) acetylacetonate, chromium (III) chloride tetrahydrofuran, chromium (III) 2-ethylhexanoate, chromium (III) acetate, chromium (III) butyrate, chromium (III) pentanoate, chromium (III) laurate, chromium GM tris(2,2,6,6-tetramethyl-3,5-heptenedionate), and chromium (III) stearate.7. The catalyst system for olefin oligomerization of claim 5 ,wherein the cocatalyst includes at least one compound selected from the group consisting of trimethyl aluminum, triethyl aluminum, triisopropyl aluminum, triisobutyl aluminum, ethylaluminum sesquichloride, diethylaluminum chloride, ethyl aluminum dichloride, methyl aluminoxane, and modified methyl aluminoxane.8. A method for oligamerizing ...

Apparatus for preparing oligomer

The present disclosure relates to an apparatus for preparing an oligomer, the apparatus including: a reactor for oligomerizing a feed stream containing a fed monomer; a stirrer inserted into a hole formed in an upper portion of the reactor; and a solvent transfer line extending inward from a side of the reactor, wherein the stirrer includes a rotating shaft vertically extending downward from the upper portion of the reactor, and a blade having a conical shape whose vertex is positioned at a lower end of the rotating shaft and outer diameter increases from a bottom toward a top, and the solvent transfer line has a plurality of spray nozzles formed in a direction toward the blade.

METHODS OF PRODUCING LINEAR ALPHA OLEFINS

A method of producing linear alpha olefins includes: introducing a catalyst stream and a first solvent stream to a reactor, wherein the reactor comprises a distributor; introducing a second solvent stream above the distributor, wherein the catalyst stream, the first solvent stream, and the second solvent stream form a reaction solution; introducing a feed stream to the reactor; passing the feed stream through the distributor; and passing the feed stream through the reaction solution, producing an oligomerization reaction forming the linear alpha olefins. 1. A method of producing linear alpha olefins , comprising:introducing a catalyst stream and a first solvent stream to a reactor, wherein the reactor comprises a distributor;introducing a second solvent stream above the distributor, wherein the catalyst stream, the first solvent stream, and the second solvent stream form a reaction solution;introducing a feed stream to the reactor;passing the feed stream through the distributor; andpassing the feed stream through the reaction solution, producing an oligomerization reaction forming the linear alpha olefins.2. The method of claim 1 , wherein the catalyst stream comprises a chromium source claim 1 , a modifier claim 1 , a ligand claim 1 , an organoaluminum compound claim 1 , or a combination comprising at least one of the foregoing.3. The method of claim 1 , wherein the first solvent stream and/or the second solvent stream comprises an alkane claim 1 , an aromatic hydrocarbon claim 1 , an olefin claim 1 , or a combination comprising at least one of the foregoing.4. The method of claim 1 , wherein the reactor is a bubble column reactor.5. The method of claim 1 , wherein the first solvent stream is introduced to a top portion of the reactor.6. The method of claim 1 , wherein an operating temperature within the reactor is 30° C. to 120° C.7. The method of claim 1 , wherein an operating pressure within the reactor is 2 claim 1 ,000 kiloPascals to 4 claim 1 ,000 kiloPascals ...

Method of producing piperylene

Provided is a method of producing piperylene from a hydrocarbon mixture derived from a petroleum fraction having a carbon number of 5. The hydrocarbon mixture has a piperylene proportional content of not less than 60 mass % and not more than 80 mass % and has a cyclic hydrocarbon proportional content of not less than 20 mass % and not more than 40 mass %. The method of producing piperylene includes a membrane separation step of performing membrane separation of the hydrocarbon mixture using a zeolite membrane to obtain a separated product in which piperylene is enriched.

Olefin conversion process

Processes for the production of olefins are disclosed, which may include: contacting a hydrocarbon mixture comprising linear butenes with an isomerization catalyst to form an isomerization product comprising 2-butenes and 1-butenes; contacting the isomerization product with a first metathesis catalyst to form a first metathesis product comprising 2-pentene and propylene, as well as any unreacted C 4 olefins, and byproducts ethylene and 3-hexene; and fractionating the first metathesis product to form a C3− fraction and a C5 fraction comprising 2-pentene. The 2-pentene may then be advantageously used to produce high purity 1-butene, 3-hexene, 1-hexene, propylene, or other desired products.

Enhanced homogenous catalyzed reactor systems

An energy storage system is provided. The energy storage system includes a vessel made of a refractory material and containing a phase change material, a thermally insulating cover at least partially surrounding the vessel, an emitter, made of a refractory material, having a first side arranged to be heated by the phase change material and a second side intended to radiate thermal power, at least one photovoltaic cell arranged to receive the thermal power emitted by the second side of the emitter, and electric means for heating the phase change material.

Fouling Prevention Method and Method for Olefin Oligomerization

The present invention provides a fouling prevention method and a method for olefin oligomerization, wherein in the method for olefin oligomerization, a predetermined anti-fouling agent is added, thereby minimizing the production of sticking byproducts generated during the reaction and fundamentally preventing the fouling of the byproducts, generated during the reaction, on an inner wall of a reactor. 1. A reactor antifouling method comprising introducing an ionic compound to a chemical reactor.2. The reactor antifouling method of claim 1 , wherein the ionic compound is one or more selected from the group consisting of inorganic salts and organic salts.3. The reactor antifouling method of claim 2 , wherein the inorganic salt is selected from the group consisting of alkali metal salts claim 2 , alkali earth metal salts claim 2 , transition metal salts claim 2 , post-transition metal salts claim 2 , and metalloid salts.4. The reactor antifouling method of claim 2 , wherein a cation of the organic salt is selected from the group consisting of ammonium claim 2 , phosphonium claim 2 , pyridinium claim 2 , imidazolium claim 2 , imidazolinium claim 2 , pyrazolium claim 2 , sulfonium claim 2 , pyrrolidinium claim 2 , and piperidinium.5. The reactor antifouling method of claim 1 , wherein 0.001 to 1 claim 1 ,000 ppm of the ionic compound is introduced claim 1 , based on a total weight of a medium.6. An olefin oligomerization method claim 1 , comprising:introducing an antifouling agent including an ionic compound to a medium introduced into a reactor;introducing a catalyst composition to the reactor; andintroducing an olefin to the reactor to subject the olefin to an oligomerization reaction.7. The olefin oligomerization method of claim 6 , wherein the ionic compound is an inorganic salt including a metal ion selected from the group consisting of alkali metals claim 6 , alkali earth metals claim 6 , transition metals claim 6 , post-transition metals claim 6 , and metalloids.8. ...

METHOD OF OLIGOMERIZATION OF OLEFINS

The present invention relates to a method of preparing α-olefins by oligomerization of C-Colefins. The method is carried out by oligomerization of C-Colefins in the presence of a catalyst system comprising a transition metal source, an activator, which is an alkylaluminoxane, and a compound of formula (I), ArArP—N(R)—PArAr[formula I], wherein Arare the same or different and are selected from substituted or unsubstituted C-Caryl, R is selected from linear or branched C-Calkyl, substituted or unsubstituted C-Caryl, and substituted or unsubstituted C-Ccycloalkyl, wherein the oligomerization is carried out in a solvent, which is a bicyclic compound or a mixture of bicyclic compounds, preferably decalin. The claimed method provides a significant increase in the activity of the catalyst during the oligomerization process and, as a consequence, a reduction in the catalyst unit consumption, as well a reduction in the formation of polymer by-product. 1. A method for preparing α-olefins by oligomerization of C-Colefins in the presence of a catalyst system comprising a transition metal source , an activator , which is an alkylaluminoxane , and a compound of formula (I) ,{'br': None, 'sup': 1', '2', '3', '4, 'ArArP—N(R)—PArAr\u2003\u2003[formula I],'}wherein{'sup': '1-4', 'sub': 6', '10, 'Arare the same or different and selected from substituted or unsubstituted C-Caryl groups;'}{'sub': 1', '4', '6', '10', '3', '10, 'R is selected from linear or branched C-Calkyl group, substituted or unsubstituted C-Caryl group, and substituted or unsubstituted C-Ccycloalkyl group;'}wherein the oligomerization process is carried out in a solvent, which is a bicyclic compound or a mixture of bicyclic compounds.2. The method of claim 1 , wherein the oligomerization is trimerization or tetramerization.3. The method of claim 1 , wherein C-Colefin is ethylene.4. The method of claim 1 , wherein the transition metal is selected from the group comprising Ti claim 1 , Zr claim 1 , Hf claim 1 , Ni claim ...

Selective Oligomerization Catalysts and Methods of Identifying Same

A method comprising obtaining a control catalyst set having a plurality of members each having a control characteristic, wherein the members of the control catalyst set comprise a transition metal and an organic ligand, selecting an intermediate formed during a catalytic cycle of each member of the control catalyst set, geometrically and energetically optimizing a structure of the intermediate, determining one or more characteristics of the geometrically and energetically optimized structure of the intermediate, determining a mathematical relationship between the control characteristic and the one or more characteristics of the geometrically and energetically optimized structure of the intermediate, utilizing the mathematical relationship to identify one or more members of a sample catalyst set having a control characteristic within a desired range, contacting the identified sample catalyst with a reactant under conditions suitable for the formation of product, and recovering the product. 1. A method comprising:obtaining a control catalyst set having a plurality of members each having a control characteristic, wherein the members of the control catalyst set comprise a transition metal and an organic ligand;selecting an intermediate formed during a catalytic cycle of each member of the control catalyst set;geometrically and energetically optimizing a structure of the intermediate;determining one or more characteristics of the geometrically and energetically optimized structure of the intermediate;determining a mathematical relationship between the control characteristic and the one or more characteristics of the geometrically and energetically optimized structure of the intermediate;utilizing the mathematical relationship to identify one or more members of a sample catalyst set having a control characteristic within a desired range;contacting the identified sample catalyst with a reactant under conditions suitable for the formation of product; andrecovering the ...

PRODUCING C5 OLEFINS FROM STEAM CRACKER C5 FEEDS

Producing C5 olefins from steam cracker C5 reeds may include reacting a mixed hydrocarbon stream comprising cyclopentadiene, C5 olefins, and C6+ hydrocarbons in a dimerization reactor where cyclopentadiene is dimerized to dicyclopentadiene. The dimerization reactor effluent may be separated into a traction comprising the C6+ hydrocarbons and dicyclopentadiene and a second fraction comprising C5 olefins and C5 dienes. The second fraction, a saturated hydrocarbon diluent stream, and hydrogen may be fed to a catalytic distillation reactor system for concurrently separating linear C5 olefins from saturated hydrocarbon diluent, cyclic C5 olefins, and C5 dienes contained in the second fraction and selectively hydrogenating C5 dienes. An overhead distillate including the linear C5 olefins and a bottoms product including cyclic C5 olefins are recovered from the catalytic distillation reactor system. Other aspects of the C5 olefin systems and processes, including catalyst configurations and control schemes, are also described. 1. (canceled)2. (canceled)3. (canceled)4. (canceled)5. (canceled)6. (canceled)7. (canceled)8. (canceled)9. (canceled)10. (canceled)11. (canceled)12. (canceled)13. (canceled)14. (canceled)15. (canceled)16. (canceled)17. (canceled)18. (canceled)19. (canceled)20. (canceled)21. (canceled)22. (canceled)23. (canceled)24. (canceled)25. (canceled)26. (canceled)27. (canceled)28. (canceled)29. (canceled)3231. The system of claim , further comprising a fractionator configured to concurrently (a) convert cyclopentadiene in a mixed hydrocarbon to dicyclopentadiene and produce a dimerization reactor effluent , and (b) separate the mixed hydrocarbon to form a bottoms fraction including the dicyclopentadiene and an overheads fraction comprising the mixed C5 hydrocarbon feedstock.3331. The system of claim , further comprising:a dimerization reactor for converting cyclopentadiene in a mixed hydrocarbon to dicyclopentadiene and producing a dimerization reactor effluent; ...

Method for Separating Ethylene Oligomerization Reaction Products

A method for separating ethylene oligomerization reaction products is provided. The method improves energy efficiency by controlling the temperature of the ethylene oligomerization reaction products. When the method for separating the ethylene oligomerization reaction products of the present invention is used, it is possible to minimize the use of hot utility and save costs required for a separation process. 1. A method for separating ethylene oligomerization reaction products , comprising:introducing an oligomer fraction excluding unreacted ethylene and 1-butene among ethylene oligomerization reaction products into a cooling unit to be cooled;introducing the oligomer fraction discharged from the cooling unit into a first C6 distillation column to discharge a first upper fraction from a top of the first C6 distillation column and discharge a first lower fraction from a bottom of the first C6 distillation column;introducing the first upper fraction discharged from the top of the first C6 distillation column into a second C6 distillation column to discharge a second upper fraction from a top of the second C6 distillation column and discharge a second lower fraction from a bottom of the second C6 distillation column; andintroducing the first lower fraction discharged from the bottom of the first C6 distillation column into a solvent distillation column to discharge a third upper fraction from a top of the solvent distillation column and discharge a third lower fraction from a bottom of the solvent distillation column, at least a portion of the oligomer fraction is used as a reboiler heat source for the solvent distillation column, and', 'at least a portion of the third upper fraction is used as a reboiler heat source for each of the first C6 distillation column and the second C6 distillation column., 'wherein_the first C6 distillation column, the second C6 distillation column, and the solvent distillation column are each provided with a condenser and a reboiler,'}2. ...

p-XYLENE PRODUCTION METHOD

A method for producing p-xylene, comprising: a dimerization step of bringing a first raw material comprising isobutene into contact with a dimerization catalyst comprising at least one selected from the group consisting of Group 9 metal elements and Group 10 metal elements to generate C8 components comprising 2,5-dimethylhexene; and a cyclization step of bringing a second raw material comprising the C8 components into contact with a dehydrogenation catalyst to generate p-xylene by the cyclodehydrogenation reaction of the C8 components. 1. A method for producing p-xylene , comprising:bringing a first raw material comprising isobutene into contact with a dimerization catalyst comprising at least one selected from the group consisting of Group 9 metal elements and Group 10 metal elements to generate C8 components comprising 2,5-dimethylhexene; andbringing a second raw material comprising the C8 components into contact with a dehydrogenation catalyst to generate p-xylene by cyclodehydrogenation reaction of the C8 components.2. The method according to claim 1 , further comprising obtaining the first raw material from a petroleum-derived C4 fraction by reactive distillation. The present invention relates to a method for producing p-xylene.p-Xylene is an industrially useful substance as a raw material of terephthalic acid, which is an intermediate raw material of polyester fiber or PET resin. As a method for producing p-xylene, for example, a method for producing p-xylene from raw material containing ethylene (Patent Literature 1) and a method for producing p-xylene from biomass (Patent Literature 2) are known, and various methods for efficiently producing p-xylene have been examined.Patent Literature 1: Japanese Unexamined Patent Publication No. 2011-79815Patent Literature 2: Japanese Unexamined Patent Publication No. 2015-193647An object of the present invention is to provide a method for producing p-xylene from isobutene as a raw material, wherein the method enables to ...

HYBRID CHEM-BIO METHOD TO PRODUCE DIENE MOLECULES

A method to produce one or more diene molecules including steps of preparing a biomass hydrolysate from biomass, producing an engineered organism that can feed on the biomass hydrolysate and express an alcohol product useful to make the diene molecule, fermenting the broth with the engineered organism, separating the alcohol product from fermentation broth, and catalyzing the alcohol to create the diene molecule. 1. A method to produce a diene molecule , comprising the steps of:providing a carbon-bearing biomass;converting the biomass to biomass hydrolysate;fermenting the biomass hydrolysate to produce fermentation broth comprising of an alcohol with at least two different reactive sites or two hydroxyl groups;separating the alcohol from fermentation broth; andcatalyzing the alcohol to form the diene molecule.2. The method according to claim 1 , wherein:the step of converting the biomass to a biomass hydrolysate comprises pretreating the biomass to initiate breakdown of the biomass material.3. The method according to claim 1 , wherein:the step of converting the biomass to a biomass hydrolysate comprises hydrolyzing the biomass to produce monomeric sugars carried in a liquid solvent.4. The method according to claim 1 , further comprising the step of:obtaining an engineered organism that can feed on the biomass hydrolysate and subsequently express a desired alcohol product.5. The method according to claim 4 , wherein:the step of fermenting the biomass hydrolysate comprises adding the engineered organism to the fermentation mixture.6. The method according to claim 5 , wherein:the organism is selected from the group comprising (prokaryotic and eukaryotic organisms).7. The method according to claim 5 , wherein:the organism is selected from the group comprising (bacteria, yeast, fungi, archaea, cyanobacteria, insect, plant, and mammalian cells).8. The method according to claim 5 , wherein:the organism is selected from the group comprising (gram-positive bacterial cells, ...

CATALYST SYSTEM FOR OLEFIN OLIGOMERIZATION AND METHOD FOR PREPARING OLEFIN OLIGOMER BY USING SAME

Disclosed are a catalyst system capable of selectively oligomerizing olefins including ethylene and a method for preparing an olefin oligomer by using the same and, specifically, a novel catalyst system capable of trimerizing and tetramerizing olefins, unlike olefin oligomerization catalyst systems that have been reported so far, and a method for preparing an olefin oligomer by using the same. The present invention provides a catalyst system for olefin oligomerization, the catalyst system comprising: a ligand compound represented by chemical formula 1 or 2; a chromium compound; a metal alkyl compound; and an aliphatic or alicyclic hydrocarbon solvent. 2. The catalyst system of claim 1 ,{'sub': 1', '2, 'wherein, in Chemical Formula 1 and 2 above, Eis nitrogen (N) and Eis oxygen (O).'}3. The catalyst system of claim 1 ,wherein the chromium compound is a compound containing chromium(III) or chromium(II).4. The catalyst system of claim 1 ,wherein the metal alkyl compound is at least one selected from the group consisting of an alkylaluminum compound, an alkylboron compound, an alkylmagnesium compound, an alkylzinc compound, and an alkyllithium compound.5. The catalyst system of claim 1 ,wherein the molar ratio of the ligand compound, the chromium compound, and the metal alkyl compound is 0.5:1:1 to 10:1:10,000 with respect to the chromium compound.6. The catalyst system of claim 1 ,wherein the aliphatic or alicyclic hydrocarbon solvent is an aliphatic or alicyclic hydrocarbon solvent having 5 to 13 carbon atoms.7. The catalyst system of claim 6 ,wherein the alicyclic hydrocarbon solvent is a cycloalkene having 5 to 13 carbon atoms.8. The catalyst system of claim 6 ,wherein the aliphatic or alicyclic hydrocarbon solvent is n-heptane, 2-methyl hexane, 3-methyl hexane, 3-ethyl pentane, 2,3-dimethyl pentane, 2,4-dimethyl pentane, 2,2-dimethyl pentane, 3,3-dimethyl pentane, 2,2,3-trimethyl butane, cyclopropene, cyclobutene, cyclopentene, cyclopentane, cyclohexene, ...

OLEFIN DOUBLE BOND ISOMERIZATION CATALYST WITH HIGH POISON RESISTANCE

A process for the double-bond isomerization of olefins is disclosed. The process may include contacting a hydrocarbon stream including olefins with a γ-alumina-titania isomerization catalyst to convert at least a portion of the olefin to its positional isomer. The γ-alumina-titanic isomerization catalysts disclosed herein may also have the activity to convert alcohol into additional olefins, while having increased resistance to oxygenate poisons. 1. A catalyst useful for the double-bond isomerization of olefins , in the presence of oxygenates , comprising a γ-alumina-titania mixture having:{'sup': '2', 'a surface area of greater than 200 m/g;'}from about 0.01 wt % to about 50 wt % titania;wherein the catalyst is resistant to poisoning by oxygenates at oxygenate concentrations in the range from about 100 ppm to about 1000 ppm.2. The catalyst of claim 1 , wherein the catalyst exhibits an increase in isomerization activity in the presence of methanol.3. The catalyst of claim 1 , wherein the catalyst also has activity for the dehydration of alcohols to form olefins.4. The catalyst of claim 1 , wherein the catalyst comprises from about 10 wt % to about 40 wt % titania.5. The catalyst of claim 1 , wherein the catalyst has a surface area greater than 350 m/g.6. A system for the production of olefins in the presence of oxygenates claim 1 , the system comprising:an inlet for receiving an olefin-containing hydrocarbon feed; [{'sup': '2', 'a surface area of greater than 200 m/g;'}, 'activity for the double bond isomerization of the olefin to form an isomerized olefin product; and', 'wherein the catalyst is resistant to poisoning by oxygenates at oxygenate concentrations in the range from about 100 ppm to about 1000 ppm;, 'a reaction zone comprising at least one bed of catalyst, the at least one bed of catalyst containing a γ-alumina-titania catalyst, the catalyst having;'}an outlet for recovering an effluent comprising the isomerized olefin product.7. The system of claim 6 , ...

PROCESS FOR PREPARING A CHLORINE COMPRISING CATALYST, THE PREPARED CATALYST, AND ITS USE

The invention concerns a process for preparing a chlorine comprising catalyst by (a) providing a Fischer-Tropsch catalyst comprising titania and at least 5 weight percent cobalt; (b) impregnating the catalyst with a solution comprising chloride ions; and (c) heating the impregnated catalyst at a temperature in the range of between 100 and 500° C. for at least 5 minutes up to 2 days. The prepared catalyst preferably comprises 0.13-3 weight percent of the element chlorine. The invention further relates to the prepared catalyst and its use. 1. A process for performing a Fischer-Tropsch reaction comprising the following steps:providing syngas to a reactor, said reactor comprising catalyst particles obtained by a process for preparing a chlorine comprising catalyst, comprising the following steps:(a) providing a Fischer-Tropsch catalyst comprising: at least 5 weight percent cobalt, calculated on the total weight of the catalyst', 'in the range of between to 0.1 to 15 weight percent promoter calculated on the total weight of the catalyst, whereby the promoter comprises manganese, rhenium, Group 8-10 noble metals, or mixtures thereof;', '(b) impregnating the catalyst with one or more solutions comprising chloride ions until the catalyst comprises 0.13-10 weight percent of the element chlorine, calculated on the total weight of the catalyst;', '(c) heating the impregnated catalyst at a temperature in the range of 100 to 500° C. for at least 5 minutes up to 2 days;, 'titania'}providing the following process conditions in the reactor: a temperature in the range from 125 to 350° C., a pressure in the range from 5 to 150 bar absolute, anda gaseous hourly space velocity in the range from 500 to 10000 Nl/l/h;removing Fischer-Tropsch product from the reactor.2. A process according to claim 1 , wherein the catalyst is impregnated in step (b) until the catalyst comprises 0.13-6 claim 1 , weight percent of the element chlorine claim 1 , calculated on the total weight of the catalyst. ...

Production of Isobutylene, Isoamylene, or Alkylates from Mixed Alkanes

A method includes brominating a butanes feed stream including i-butane in a bromination reactor to form a bromination effluent stream including t-butyl bromide. The method includes dehydrobrominating the t-butyl bromide to form isobutylene. Another method includes brominating a mixed pentanes feed stream including i-pentane and n-pentane in a bromination reactor to form a bromination effluent stream including t-pentyl bromide. The method includes dehydrobrominating the t-pentyl bromide to form isoamylene and HBr. 1. A method comprising:brominating a butanes feed stream comprising i-butane in a bromination reactor to form a bromination effluent stream comprising t-butyl bromide, polybromides, and unreacted i-butane;separating the polybromides from the brominated compound stream;hydrogenating the polybromides with hydrogen to form a hydrogenation recycle stream;recycling the hydrogenation recycle stream to the bromination effluent stream; anddehydrobrominating the t-butyl bromide to form isobutylene and HBr.29-. (canceled)10. The method of claim 1 , wherein claim 1 , following the step of dehydrobrominating the t-butyl bromide to form isobutylene and HBr claim 1 , separating the isobutylene from the HBr.11. The method of claim 1 , wherein dehydrobrominating the t-butyl bromide to form isobutylene and HBr is performed in the presence of a catalyst.12. The method of claim 1 , wherein dehydrobrominating the t-butyl bromide to form isobutylene and HBr is performed in the absence of a catalyst.1326-. (canceled)27. The method of claim 1 , wherein the step of hydrogenating the polybromides with hydrogen to form a hydrogenation recycle stream comprises partially hydrogenating the polybromides to form t-butyl bromide.28. The method of claim 1 , wherein the step of hydrogenating the polybromides with hydrogen to form a hydrogenation recycle stream comprises completely hydrogenating the polybromides to form i-butane.29. The method of claim 1 , wherein a stoichiometric excess of ...

Ligand Compound, Organic Chromium Compound, Catalyst System For Olefin Oligomerizatin, And Method For Oligomerizing Olefin Using Same

The present invention relates to a ligand compound, a catalyst system for olefin oligomerization and a method for oligomerizing an olefin using same. The catalyst system for olefin oligomerization according to the present invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thus enabling more efficient preparation of alpha-olefins. 2. The organic chrome compound of claim 1 , wherein the organic chromium compound is in a form in which at least one unshared electron pair among N claim 1 , P claim 1 , and O in the at least one ligand compound is coordinated to the chromium (Cr).4. The catalyst system for olefin oligomerization of claim 3 ,wherein the source of chromium includes at least one compound selected from the group consisting of chromium (III) acetylacetonate, chromium (III) chloride tetrahydrofuran, chromium (III) 2-ethylhexanoate, chromium (III) acetate, chromium (III) butyrate, chromium (III) pentanoate, chromium (III) laurate, chromium (III) tris(2,2,6,6-tetramethyl-3,5-heptenedionate), and chromium (III) stearate.5. The catalyst system for olefin oligomerization of claim 3 ,wherein the cocatalyst includes at least one compound selected from the group consisting of trimethyl aluminum, triethyl aluminum, triisopropyl aluminum, triisobutyl aluminum, ethylaluminum sesquichloride, diethylaluminum chloride, ethyl aluminum dichloride, methyl aluminoxane, and modified methyl aluminoxane.6. A method for oligomerizing an olefin claim 3 , comprising the step of carrying out an oligomerization reaction of an olefin in the presence of the catalyst system according to to form an alpha-olefin.7. A catalyst system for olefin oligomerization claim 2 , comprising the organic chromium compound of claim 2 , and a cocatalyst.8. The catalyst system for olefin oligomerization of claim 7 ,wherein the cocatalyst includes at least one compound selected from the group consisting of trimethyl aluminum, triethyl aluminum, triisopropyl ...

Methods of preparing oligomers of an olefin

Methods of preparing oligomers of an olefin are provided. The methods can include providing a composition that includes an alkylaluminum compound, a chromium compound, and a hydrocarbon solvent. The hydrocarbon solvent can include n-undecane, a C8-C11 alkane compound having one branch, or a mixture thereof. The methods can further include contacting an olefin with the composition to form oligomers of the olefin. The olefin can include ethylene, and the oligomers of the olefin can include 1-hexene.

METHOD OF SEPARATING LINEAR ALPHA OLEFINS

A method of separating linear alpha olefins, comprising: passing a feed stream comprising linear alpha olefins through a first column; distributing a C4− fraction to a top portion of the first column; withdrawing a C6+ fraction from a bottom portion of the first column and passing the C6+ fraction through a second column; distributing a C12+ fraction to a bottom portion of the second column; withdrawing a C10− fraction from a top portion of the second column and passing the C10− fraction through a third column, wherein the C10− fraction is substantially free of polymer; and distributing a C6 fraction to a top portion of the third column. 1. A method of separating linear alpha olefins , comprising:passing a feed stream comprising linear alpha olefins through a first column;distributing a C4− fraction to a top portion of the first column;withdrawing a C6+ fraction from a bottom portion of the first column and passing the C6+ fraction through a second column;distributing a C12+ fraction to a bottom portion of the second column;withdrawing a C10− fraction from a top portion of the second column and passing the C10− fraction through a third column, wherein the C10− fraction is substantially free of polymer; anddistributing a C6 fraction to a top portion of the third column.2. The method of claim 1 , wherein a source of the feed stream is a product of an ethylene oligomerization process or wherein the feed stream is a product of a mixture of hydrocarbons with dissolved polymer.3. The method of claim 1 , wherein the feed stream comprises aromatics claim 1 , alkanes claim 1 , olefins claim 1 , or a combination comprising at least one of the foregoing claim 1 , preferably wherein the feed stream comprises methane claim 1 , ethylene claim 1 , ethane claim 1 , 1-butene claim 1 , 1-hexene claim 1 , 1-octene claim 1 , 1-decene claim 1 , 1-dodecene claim 1 , catalyst deactivator agent claim 1 , catalyst de-composition claim 1 , polymer claim 1 , or a combination comprising at ...

METHOD FOR PREPARATION OF A CATALYST SOLUTION FOR SELECTIVE 1-HEXENE PRODUCTION

A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin includes: preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel; preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; and simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent. 1. A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin , comprising:preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel;preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; andeither simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent;or simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a hydrocarbon solvent feed upstream from a reaction vessel.2. (canceled)3. The method of claim 1 , wherein the chromium source is selected from organic or inorganic salts claim 1 , coordinate complexes and organometallic complexes of Cr(II) or Cr(III) claim 1 , preferably CrCl(THF) claim 1 , CR(III) acetyl acetonate claim 1 , Cr(III) octanoate claim 1 , chromium hexacarbonyl claim 1 , Cr(III)-2-ethylenexanoate claim 1 , benzene(tricarbonyl)-chromium claim 1 , Cr(III) chloride claim 1 , or a combination comprising at least one of the foregoing.4. The method of claim 1 , wherein the ligand has the ...

Methods of preparing oligomers of an olefin

Methods of preparing oligomers of an olefin are provided. The methods can include providing an alkylaluminum compound and irradiating the alkylaluminum compound with microwave radiation to provide an irradiated alkylaluminum compound. The methods can further include mixing the irradiated alkylaluminum compound with a chromium compound, a pyrrole compound, and a zinc compound to provide a catalyst composition. The methods can further include contacting an olefin with the composition to form oligomers of the olefin. The olefin can include ethylene, and the oligomers of the olefin can include 1-hexene.

Reduced polymer formation for selective ethylene oligomerizations

Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an ethylene oligomer product in a reaction zone using a catalyst system comprising (a) a chromium component comprising an N2-phosphinyl amidine chromium compound complex, an N2-phosphinyl formamidine chromium compound complex, an N2-phosphinyl guanidine chromium compound complex, or any combination thereof, and (b) an aluminoxane. A C3+ olefin can be present in the reaction zone for a period of time, where the C3+ olefin is not an ethylene oligomer formed in-situ within the reaction zone.

Reduced polymer formation for selective ethylene oligomerizations

Disclosed herein are processes, systems, and reaction systems for the oligomerization of ethylene to form an ethylene oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising a heteroatomic ligand chromium compound complex of the type disclosed herein, and ii) an aluminoxane. A C 3+ olefin can be present in the reaction zone for a period of time, where the C 3+ olefin is not an ethylene oligomer formed in-situ within the reaction zone.

Process improvements in selective ethylene oligomerizations

Disclosed are processes, systems, and reaction systems for the oligomerization of ethylene to form an oligomer product in a reaction zone using a catalyst system having i) a chromium component comprising an N 2 -phosphinyl amidine chromium compound complex, an N 2 -phosphinyl formamidine chromium compound complex, an N 2 -phosphinyl guanidine chromium compound complex, or any combination thereof, and ii) an aluminoxane. Ethylene can be contacted with an organic reaction medium to form an ethylene feedstock mixture prior to contact with the catalyst system. The ethylene feedstock mixture can be contacted with the catalyst system inside or outside of the reaction zone.

Fluorinated N2-phosphinyl amidine compounds, chromium salt complexes, catalyst systems, and their use to oligomerize ethylene

A composition comprising an N 2 -phosphinylamidine chromium salt complex having Structure FNPACr I: wherein CrX p is a chromium salt where X is a monoanion and p is an integer from 2 to 6. A process comprising a) contacting i) ethylene, and ii) a catalyst system comprising an N 2 -phosphinylamidine chromium salt complex having Structure FNPACr I: wherein CrX p is a chromium salt where X is a monoanion and p is an integer from 2 to 6; and b) forming an oligomer product in a reaction zone.

Prepn. of alpha-olefin oligomers, esp. hex-1-ene, for use in prepn. of LLDPE

Prepn. of an alpha -olefin oligomer uses a chromium-based catalyst system comprising (A) a chromium cpd; (B) at least one nitrogen-contg. cpd. chosen from amines, amides or imides; and (C) an alkyl aluminium cpd.. The prepn. involves the oligomerisation of an alpha -olefin oligomer in a solvent and then isolating the oligomers, catalyst components and polymer byproducts from the reaction soln.. Also claimed is a similar prepn. for an alpha -olefin oligomer, in which the reaction soln. is passed through a degassing tower to recover unreacted olefin, then through a distillation tower to isolate the oligomer as a distillate, and then the remaining concentrate of catalyst and polymer byproducts at the base of this tower was isolated, both of these two prods. being maintained as a dispersion in the reaction soln. between the oligomerisation reactor outlet and the distillation tower inlet.

Catalyst for olefin multimerization and method for producing olefin multimer in presence of catalyst for olefin multimerization

The objectives of the present invention are to provide an olefin oligomerization catalyst that allows properties of particles of a polymer component by-produced in an α-olefin production process to be obtained in such a shape that does not negatively affect a separation process for the particles and to provide a method for producing an olefin oligomer performed in the presence of the olefin oligomerization catalyst. The objectives can be achieved by the olefin oligomerization catalyst obtained by contacting (D) a transition metal compound with a preliminary contact solid catalyst component (II) obtained by contacting a solid catalyst component (I) formed by supporting (B) an organoaluminum oxy-compound (b-2) on (A) a solid carrier with (C) at least one compound selected from the group consisting of an organometallic compound (c-1), an organoaluminum oxy-compound (c-2), and a compound (c-3) that reacts with the transition metal compound (D) to form a pair of ion.

Method of inhibiting reactor fouling and oligomerisation of olefin using the same

Provided are a fouling inhibitor and a method of oligomerizing an olefin using the same. More particularly, in the method of oligomerizing an olefin, it is possible to minimize a total production amount of polymers produced during a reaction and basically inhibit fouling of the polymers produced during the reaction onto an inner wall of a reactor by injecting a predetermined fouling inhibitor.

Method of inhibiting reactor fouling and oligomerisation of olefin using the same

Provided are a fouling inhibitor and a method of oligomerizing an olefin using the same. More particularly, in the method of oligomerizing an olefin, it is possible to minimize a total amount of polymers produced during a reaction and basically inhibit fouling of the polymers produced during the reaction onto an inner wall of a reactor by injecting a predetermined fouling inhibitor.

Method for producing the transition metal complex, catalyst for trimerization, method for producing 1-hexene, method for producing the substituted cyclopentadiene compound (1)

A silicon-bridged Cp-Ar transition metal complex is provided that serves as a catalytic component capable of efficiently and highly selectively producing 1-hexene through the trimerization reaction of ethylene. The transition metal complex is represented by formula (1): wherein M 1 represents a transition metal atom of Group 4 of the Periodic Table of the Elements; Ar 1 is an aryl group represented by formula (2), Ar 2 is an aryl group represented by formula (3) and Ar 3 is an aryl group represented by formula (4) (not all of the three aryl groups Ar 1 , Ar 2 and Ar 3 are the same at the same time), Wherein each of the X and R groups represents hydrogen or the like.

Method for producing transition metal complex, catalyst for trimerization, method for producing 1-hexene, method for producing substituted cyclopentadiene compound (2)

A silicon-bridged Cp-Ar transition metal complex serves as a catalytic component capable of efficiently and highly selectively producing 1-hexene through trimerization reaction of ethylene. The transition metal complex is represented by formula (1): wherein M represents a transition metal atom of Group 4 of the Periodic Table of the Elements; X 1 , X 2 , X 3 , R 1 , R 2 , R 3 , R 4 , R 5 , R 6 , R 7 , R 8 , and R 9 each independently represent a hydrogen atom, a halogen atom, an alkyl group having 1 to 20 carbon atoms, an alkoxy group having 1 to 20 carbon atoms, an aryl group having 6 to 20 carbon atoms, an aryloxy group having 6 to 20 carbon atoms, an aralkyl group having 7 to 20 carbon atoms, and an aralkyloxy group having 7 to 20 carbon atoms, and wherein each of the groups may have a halogen atom as a substituent.

1-hexene production process

Disclosed is transition metal complex that serves as a catalytic component with which 1-hexene can be produced efficiently with excellent selectivity, even under high temperature conditions, by means of an ethylene trimerization reaction. Said transition metal complex is represented by the following general formula (1), wherein M 1 represents a Group 4 transition metal atom, and R 1 through R 11 and X 1 through X 3 each independently represent a hydrogen atom, a halogen atom, or a specific organic group.

production process of a polyolefin, polyolefin and 1-hexene to be used as raw material in the production of low density linear polyethylene

processo de produção de poliolefina, poliolefina e 1-hexeno para material bruto de produção de polietileno de baixa densidade linear o objeto da presente invenção é prover um processo de produção de uma poliolefina, no qual atividade de catalisador é aperfeiçoada, e uma poliolefina tal como um polietileno de baixa densidade linear pode ser industrialmente produzido vantajosamente. a presente invenção refere-se a um processo de produção de uma poliolefina, no qual na produção de uma poliolefina através de reação de polimerização de uma olefina usando um catalisador, um haleto orgânico está presente em um sistema de reação em uma quantidade de 0,05 a 10 ppm em peso em termos de um átomo de halogênio como uma concentração em uma poliolefina de material em bruto, e 1-hexeno para material bruto para produção de polietileno de baixa densidade linear, contendo um haleto orgânico em uma quantidade de 0,05 a 1 o ppm em peso em termos de um átomo de halogênio . production process of polyolefin, polyolefin and 1-hexene for crude material for the production of linear low density polyethylene the object of the present invention is to provide a process for the production of a polyolefin, in which catalyst activity is improved, and a polyolefin such as a linear low density polyethylene can be advantageously industrially produced. the present invention relates to a process for the production of a polyolefin, in which in the production of a polyolefin through the polymerization reaction of an olefin using a catalyst, an organic halide is present in a reaction system in an amount of 0, 05 to 10 ppm by weight in terms of a halogen atom as a concentration in a polyolefin of crude material, and 1-hexene for crude material for the production of linear low density polyethylene, containing an organic halide in an amount of 0, 05 to 1 ppm by weight in terms of a halogen atom.

Metodo de produccion de poliolefina, poliolefina y 1-hexano para la produccion de un material sin procesar de baja densidad lineal.

El objeto de la presente invención es el de proporcionar un método de producción de una poliolefina, en donde la actividad del catalizador es mejorada, y una poliolefina tal como un polietileno de baja densidad lineal puede ser producido ventajosamente de manera industrial. La presente invención describe un método de producción de una poliolefina, en donde la producción de una poliolefina mediante una reacción de polimerización de una olefina que utiliza un catalizador, un organohálido se encuentra presente en un sistema de reacción, en una cantidad de 0.05 a 10 ppm del peso en términos de un átomo de halógeno como una concentración en una poliolefina de un material sin procesar, y 1-hexano para la producción de un material sin procesar de un polietileno de baja densidad lineal, que contiene un organohálido en una cantidad de 0.05 a 10 ppm del peso, en términos de un átomo de halógeno.

α−オレフィン低重合体の製造方法

Method for preparation of a catalyst solution for selective 1-hexene production

A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin includes: preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel; preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; and simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent.

Apparatus for preparing oligomer

The present disclosure relates to an apparatus for preparing an oligomer, and more particularly, to an apparatus for preparing an oligomer including: a reactor including a gaseous area having a first gaseous reactant inlet provided at a lower portion thereof, and a reaction area in which a reaction medium reacts with the gaseous reactant above the gaseous area; a second gaseous reactant inlet provided on an inner wall of the reactor in the gaseous area and a third gaseous reactant inlet provided on an inner wall of the reactor facing the second gaseous reactant inlet; and a first injection nozzle connected to the second gaseous reactant inlet and a second injection nozzle connected to the third gaseous reactant inlet.

Method for oligomerization of ethylene

The present invention relates to a method for oligomerization of ethylene, comprising the steps: a) feeding ethylene, solvent and a catalyst composition comprising catalyst and cocatalyst into a reactor, b) oligomerizing ethylene in the reactor, c) discharging a reactor effluent comprising linear alpha-olefins including I-butene, solvent, unconsumed ethylene dissolved in the reactor effluent, and catalyst composition from the reactor, d) separating ethylene and 1-butene collectively from the remaining reactor effluent, and e) recycling at least a part of the ethylene and the 1-butene separated in step d) into the reactor.

Heterogeneous supports for homogeneous catalysts

A method of making a heterogenously supported catalyst useful in dimerization, oligomerization or polymerization is provided in which a catalyst precursor containing a metal and an aromatic group are alkylated onto an oligomeric support having at least one terminal unsaturated group by Friedel Crafts alkylation.

Method for producing 1-hexene

金属前躯体和烯属稀释剂的组合物和催化剂系统

描述的是制备和使用金属前躯体稀释剂组合物的系统和方法。所述组合物包括金属前躯体、和按重量计大约18％至大约80％的烯属稀释剂，该烯属稀释剂具有在6个和18个之间的碳原子。这种组合物可以在低聚催化剂系统中使用。

Oligomerization catalyst system and process for oligomerizing olefins

Among other things, this disclosure provides an olefin oligomerization system and process, the system comprising: a) a transition metal compound; b) a pyrrole compound having a hydrogen atom on at the 5-position or the 2- and 5-position of a pyrrole compound and having a bulky substituent located on each carbon atom adjacent to the carbon atom bearing a hydrogen atom at the 5-position or the 2- and 5-position of a pyrrole compound. These catalyst system have significantly improved productivities, selectivities to 1-hexene, and provides higher purity 1-hexene within the C 6 fraction than catalyst systems using 2,4-dimethyl pyrrole.

Metodos de preparacion de oligomeros de una olefina.

Se proporcionan métodos para preparar oligómeros de una olefina; los métodos pueden incluir proporcionar una composición que incluye un compuesto de alquilaluminio, un compuesto de cromo y un disolvente hidrocarburo; el disolvente hidrocarburo puede incluir un n-undecano, un compuesto alcano de 8 a 11 átomos de carbono que tiene una rama, o una mezcla de estos; los métodos pueden incluir además poner en contacto una olefina con la composición para formar oligómeros de la olefina; la olefina puede incluir etileno, y los oligómeros de la olefina pueden incluir 1-hexeno.

Ethylene oligomerization/trimerization/tetramerization reactor

A process includes periodically or continuously introducing an olefin monomer and periodically or continuously introducing a catalyst system or catalyst system components into a reaction mixture within a reaction system, oligomerizing the olefin monomer within the reaction mixture to form an oligomer product, and periodically or continuously discharging a reaction system effluent comprising the oligomer product from the reaction system. The reaction system includes a total reaction mixture volume and a heat exchanged portion of the reaction system comprising a heat exchanged reaction mixture volume and a total heat exchanged surface area providing indirect contact between the reaction mixture and a heat exchange medium. A ratio of the total heat exchanged surface area to the total reaction mixture volume within the reaction system is in a range from 0.75 in−1 to 5 in−1, and an oligomer product discharge rate from the reaction system is between 1.0 (lb)(hr−1)(gal−1) to 6.0 (lb)(hr−1)(gal−1).

Catalyst system for olefin oligomerization and method for preparing olefin oligomer using same

Disclosed are a novel catalyst system which is a catalyst system for selectively oligomerizing olefin including ethylene and may trimerize and tetramerize olefin, different from the catalyst system for olefin oligomerization reported until now, and a method for preparing an olefin oligomer using same. The present invention provides a catalyst system for olefin oligomerization, including a ligand compound represented by Formula 1; a chromium compound; and a metal alkyl compound, and a method for preparing an olefin oligomer using same.

Catalyst system for olefin oligomerization and method for preparing olefin oligomer using same

Disclosed are a novel catalyst system which is a catalyst system for selectively oligomerizing olefin including ethylene and may trimerize and tetramerize olefin, different from the catalyst system for olefin oligomerization reported until now, and a method for preparing an olefin oligomer using same. The present invention provides a catalyst system for olefin oligomerization, including a ligand compound represented by Formula 1 or 2; a chromium compound; and a metal alkyl compound, and a method for preparing an olefin oligomer using same.

Catalyst system for olefin oligomerization and method for preparing olefin oligomer by using same

Disclosed are a catalyst system capable of selectively oligomerizing olefins including ethylene and a method for preparing an olefin oligomer by using the same and, specifically, a novel catalyst system capable of tripletizing and quaternizing olefins, unlike olefin oligomerization catalyst systems that have been reported so far, and a method for preparing an olefin oligomer by using the same. The present invention provides a catalyst system for olefin oligomerization, the catalyst system comprising: a ligand compound represented by chemical formula 1 or 2; a chromium compound; a metal alkyl compound; and an aliphatic or alicyclic hydrocarbon solvent.

Method for producing α-olefin oligomer

The present invention relates to: a method for producing an α-olefin oligomer by performing an oligomerization reaction of an α-olefin in a reaction solvent within a reactor in the presence of a catalyst, wherein a non-concentrated gas and a condensate liquid obtained from an outlet port of a heat exchanger by introducing some of a gas in the gas phase part within the reactor into the heat exchanger and cooling the gas in the heat exchanger are circulated and supplied to the reactor, and wherein the temperature of the liquid phase part within the reactor is from 110°C to 150°C and the outlet temperature of the heat exchanger is from 50°C to 100°C; and an apparatus for producing an α-olefin oligomer.

Method for preparation of homogenous catalyst for selective 1-hexene production

A method for preparing a homogenous catalyst for the production of linear alpha olefins includes: preparing a first pre-catalyst solution comprising a modifier and an organoaluminum compound in a first solvent wherein the first pre-catalyst solution is reacted and stored in a first vessel for a period of time of 1 hour to 90 days; preparing a second pre- catalyst solution comprising a second solvent, a ligand, and a chromium containing compound, wherein the second pre-catalyst solution is stored in a second vessel for a period of time of 1 hour to 90 days; and after a period of time, adding the first pre-catalyst solution to a catalyst pre-formation unit; after the same period of time, adding the second pre-catalyst solution to the catalyst pre-formation unit; forming a homogenous catalyst by mixing the first pre-catalyst solution and the second pre-catalyst solution; adding the homogeneous catalyst to a reaction vessel, wherein the reaction vessel comprises an alpha olefin; and forming the linear alpha olefin by mixing the homogeneous catalyst and the homogenous catalyst.

Method for preparation of a catalyst solution for selective 1-hexene production

A method for preparing a homogenous catalyst for use in preparing a linear alpha olefin includes: preparing a first pre-catalyst solution by mixing a chromium source and a ligand in a first solvent, wherein the first pre-catalyst solution is stored in a first vessel; preparing a second pre-catalyst solution by mixing an organoaluminum compound and a modifier in a second solvent, wherein the second pre-catalyst solution is stored in a second vessel; and simultaneously feeding the first pre-catalyst solution and the second pre-catalyst solution directly into a reaction vessel, wherein the reaction vessel includes a third solvent.

올리고머 제조 장치

본 발명은 올리고머 제조 장치에 관한 것으로, 보다 상세하게는 하부에 제1 기상 반응물 투입구가 구비된 기상 영역과, 상기 기상 영역의 상부에서 상기 기상 반응물과 접촉하는 반응 매체를 포함하는 반응 영역을 포함하는 반응기; 상기 기상 영역의 반응기 내벽에 구비된 제2 기상 반응물 투입구, 및 상기 제2 기상 반응물 투입구와 마주보는 반응기 내벽에 구비된 제3 기상 반응물 투입구; 및 상기 제2 기상 반응물 투입구에 연결된 제1 분사 노즐 및 제3 기상 반응물 투입구에 연결된 제2 분사 노즐을 포함하는 올리고머 제조 장치를 제공한다.

System and method for deactivating and quenching an oligomerization catalyst

촉매시스템 비활성화 방법이 기재된다. 본 방법은 촉매시스템을 최소한 부분적으로 비활성화시키기 위하여, 촉매시스템, 올리고머화 올레핀, 및 희석제로 구성된 반응기 배출액을 중지제와 접촉시키는 단계, 반응기 배출액을 올리고머화 올레핀, 희석제, 또는 이들의 조합으로 구성되며 실질적으로 최소한 부분적으로 비활성화된 촉매가 존재하지 않는 하나 이상의 제1 흐름, 및 비활성화된 촉매로 구성되는 제2 흐름으로 분리하는 단계, 및 제2 흐름을 억제제와 접촉시키는 단계로 구성된다. A method for deactivating a catalyst system is described. The method comprises contacting a reactor effluent consisting of a catalyst system, an oligomerized olefin, and a diluent with a terminator to at least partially deactivate the catalyst system, contacting the reactor effluent with an oligomerized olefin, a diluent, Separating the catalyst into at least one first stream which is constituted and substantially free of at least partially deactivated catalyst and a second stream which consists of an inactive catalyst and contacting the second stream with an inhibitor.

Side rectifier column for olefin and diluent recovery

Processes and systems for olefin and diluent recovery utilizing one or more side columns, including a side rectifier column and/or a side degassing column, in combination with a heavies column.

Method for olefin oligomerization

A method for olefin oligomerization comprising i) injecting an olefin monomer and a solvent into a continuous stirred tank reactor; ii) injecting an oligomerization catalyst system comprising a ligand compound, a transition metal compound, and a co-catalyst into the continuous stirred tank reactor; and iii) performing a multimerization reaction of the olefin monomer, wherein a ratio of the flowing rates of the olefin monomer and the solvent is from 1:1 to 2:1.

增强的均相催化反应器系统

提供了用于进行均相催化过程的反应器。所述反应器包括适合连接至产物线的反应容器、适合连接至气体进料线的气体喷射器、和邻近所述反应容器的顶部并适合连接至液体进料线的液体分布器。还提供了进行过程的方法。

Selective isomerization and linear dimerization of olefins using cobalt catalysts

Provided herein is an oligomerization product formed from alpha-olefins having at least three carbon atoms comprising dimers, at least about 80 weight percent of which are linear. In an embodiment, an oligomerization product formed from alpha-olefins having at least three carbon atoms comprises trimers, at least about 20 weight percent of which are linear. In another embodiment, an oligomerization product formed from alpha-olefins having at least three carbon atoms comprises tetramers, at least about 5 weight percent of which are linear. In yet another embodiment, an oligomerization product formed from alpha-olefins having at least three carbon atoms comprises pentamers, at least about 5 weight percent of which are linear.

Selective isomerization and linear dimerization of olefins using cobalt catalysts

Processes for the production of alpha-olefins, including dimerization and isomerization of olefins using a cobalt catalyst complex are provided herein. The olefins so produced are useful as monomers in further polymerization reactions and are useful as chemical intermediates.

Ethylene oligomerization processes

A process comprising a) contacting (i) ethylene, (ii) a catalyst system comprising 1) a heteroatomic ligand iron salt complex, or a heteroatomic ligand and an iron salt, (iii) hydrogen, and (iv) optionally an organic reaction medium; and b) forming an oligomer product wherein 1) the oligomer product has a Schulz-Flory K value from 0.4 to 0.8 and 2) the oligomer product comprises (a) less than 1 wt. % of polymer, (b) less than 1 wt. % compounds having greater than 70 carbon atoms, (c) less than 1 wt. % compounds having a weight average molecular weight of greater than 1000 g/mol, or (d) any combination thereof wherein the weight percentage is based on the total weight of the oligomer product.

Enhanced homogenous catalyzed reactor systems

Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes

A method and apparatus for dehydrating bio-1-alcohols to bio-1-alkenes with high selectivity. The bio-1-alkenes are useful in preparing high flashpoint diesel and jet biofuels which are useful to civilian and military applications. Furthermore, the bio-1-alkenes may be converted to biolubricants useful in the transportation sector and other areas requiring high purity/thermally stable lubricants.

Process for the dehydration of aqueous bio-derived terminal alcohols to terminal alkenes

A method and apparatus for dehydrating bio-1-alcohols to bio-1-alkenes with high selectivity. The bio-1-alkenes are useful in preparing high flashpoint diesel and jet biofuels which are useful to civilian and military applications. Furthermore, the bio-1-alkenes may be converted to biolubricants useful in the transportation sector and other areas requiring high purity/thermally stable lubricants.

Production method of polyolefin, polyolefin and 1-hexene for linear low density polyethylene production raw material

The invention aims at providing a process for the production of polyolefins which makes it possible by virtue of enhanced catalytic activity to produce polyolefins such as linear low-density polyethylene industrially advantageously. The invention relates to a process of producing polyolefins by polymerizing an olefin with a catalyst, wherein an organic halogen compound is present in the polymerization system in a concentration of 0.05 to 10ppm by weight in terms of halogen based on the raw material olefin; and 1-hexene to be used as the raw material in producing linear low-density polyethylene, which contains 0.05 to lOppm by weight of an organic halogen compound in terms of halogen. No Suitable Figure

Catalyst composition and method of preparing polyolefin using the same

Provided are a catalyst composition and a method of oligomerizing olefins using the same. When the catalyst composition according to the present invention is used, oligomerization and copolymerization of olefin monomers may be performed in a single reactor at the same time with high efficiency without a separate process of preparing alpha-olefin. Therefore, costs for preparing or purchasing comonomers which are expensive raw materials may be reduced, thereby reducing the production cost of a final product. Contents of SCB (short chain branch) and LCB (long chain branch) in the polyolefin may be increased without separate feeding of comonomers, thereby producing high-quality linear low-density polyethylene.

reactor to perform processes for a product line; and method to perform a process

trata-se de um reator para realizar processos catalíticos homogêneos. o reator inclui um recipiente de reação adaptado para ser acoplado a uma linha de produtos, um aspersor de gás adaptado para ser acoplado a uma linha de alimentação de gás e um distribuidor de líquido próximo ao topo do recipiente de reação e adaptado para ser acoplado a uma linha de alimentação de líquido. um método para realizar um processo também é fornecido. It is a reactor to perform homogeneous catalytic processes. the reactor includes a reaction vessel adapted to be coupled to a product line, a gas sprinkler adapted to be coupled to a gas supply line, and a liquid dispenser near the top of the reaction vessel and adapted to be coupled to a a liquid feed line. A method for performing a process is also provided.

A process for oligomerising a hydrocarbon to form at least one co-monomer product

A process (10) for oligomerising a hydrocarbon to form at least one co-monomer product (22) includes feeding a hydrocarbon reactant and organic liquid diluent solvent (32) into an oligomerisation reactor (12). The organic liquid diluent solvent has a normal boiling point below the normal boiling point of 1-hexene but above -20°C, or the organic diluent solvent is in the form of a solvent admixture with at least 70% by mass of the solvent admixture constituting organic diluent solvents having a normal boiling point below the normal boiling point of 1-hexene but above -20°C. The oligomerisation reactor (12) holds at least one co-monomer product formed in the oligomerisation reactor admixed with a catalyst system (25) introduced into the oligomerisation reactor (12). The catalyst system (25) includes a catalyst dissolved in at least one catalyst solvent. At least a portion of the hydrocarbon reactant is oligomerised in the reactor (12) to form co-monomer product and polymeric by-product as part of a liquid product, which is withdrawn. When there is only one catalyst solvent and only one organic liquid diluent solvent, the catalyst solvent and the organic liquid diluent solvent are not the same solvent. When there is more than one catalyst solvent or more than one organic liquid diluent solvent, at least one of the catalyst solvents is not also used as organic liquid diluent solvent or at least one of the organic liquid diluent solvents is not also used at the catalyst solvent. The mass ratio of all organic liquid diluent solvent introduced into the oligomerisation reactor to all catalyst solvent introduced into the oligomerisation reactor over a selected time period is between 15:1 and 4500:1.

Oligomerisation of ethylene to mixtures of 1-hexene and 1-octene

A process for the oligomerisation, preferably the tetramerisation, of ethylene to predominantly 1- hexene or 1-octene or mixtures of 1-hexene and 1-octene includes contacting ethylene with a catalyst under ethylene oiigomerisation conditions. The catalyst comprises a source of chromium, a diphosphine ligating compound, and optionally an activator. The diphosphine iigating compound includes at least one substituted aromatic ring bonded to a phosphorous atom. The substituted aromatic ring is substituted at a ring atom adjacent to the ring atom bonded to the respective phosphorous atom with a group Y, where Y is of the form -AR EWG , A being O, S or NR 5 , where R 5 is a hydrocarbyl, heterohydrocarbyl or organoheteryl group, and R EWG is an electron withdrawing group.

Tetramerisation of ethylene

A process for the tetramerisation of ethylene includes contacting ethylene with a catalyst under ethylene oligomerisation conditions. The catalyst comprises a source of chromium, a ligating compound, and an activator. The ligating compound includes a phosphine that forms part of a cyclic structure.

Oligomerisation of ethylene to mixtures of 1-hexene and 1-octene

A process for the otigomerisation of ethylene to predominantly 1-hexene or 1-octene or mixtures of 1-hexene and 1-octene includes contacting ethylene with a catalyst under ethylene oligomerisation conditions. The catalyst comprises a source of chromium, a diphosphine ligating compound, and optionally an activator. The diphosphine ligating compound includes at least one optionally substituted fused cyclic structure including at least two rings, the optionally substituted fused cyclic structure including a 5- to 7- membered aromatic first ring bonded to a phosphorus atom, the aromatic first ring being fused to a 4- to 8-membered heterocyclic second ring, the heterocyclic second ring including a heteroatom which is separated by two ring atoms along the shortest connecting path from the phosphorous atom that is bonded to the first aromatic ring.

Method for oligomerization of ethylene

Methods for the oligomerization of ethylene, and more specifically, methods for the preparation of mainly ethylene oligomers of C 10 or higher are described. A method can include performing a first oligomerization of an ethylene gas using a Ni-containing mesoporous catalyst, followed by a second oligomerization using an ion exchange resin, etc. to produce ethylene oligomers of C 10 or higher. The method for the preparation of ethylene oligomers can produce C 8-16 ethylene oligomers in high yield without inducing deactivation of the catalyst, compared to the conventional technology of ethylene oligomerization by a one-step process.

Ligand compound, organic chromium compound, catalyst system for oligomerization of olefins, and method for oligomerizing olefins using the same

The present invention relates to a ligand compound, a catalyst system for oligomerization of olefins including the ligand compound and the organic chromium compound, and a method for oligomerizing olefins using the same. The catalyst system for olefin oligomerization according to the present invention invention exhibits high selectivity to 1-hexene or 1-octene while having excellent catalytic activity, thereby enabling more efficient production of alpha-olefins.

Ligand compound, catalyst system for olefin oligomerization, and method for olefin oligomerization using the same

본 발명은 리간드 화합물, 올레핀 올리고머화용 촉매계, 및 이를 이용한 올레핀 올리고머화 방법에 관한 것으로, 본 발명에 따른 리간드 화합물은 치환기가 트랜스(trans) 형태로 치환되어 있으며, 이를 올레핀 올리고머화에 사용시 촉매의 활성 및 1-헥센 및 1-옥텐의 선택도를 높일 수 있다는 특징이 있다. The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and an olefin oligomerization method using the same. The ligand compound according to the present invention has a substituent in the trans form, and when used for olefin oligomerization, And the selectivity of 1-hexene and 1-octene can be increased.

Ligand compound, catalyst system for olefin oligomerization, and olefin oligomerization method using same

The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and an olefin oligomerization method using same. The ligand compound according to the present invention has substituents substituted in a trans form and is characterized by being capable of increasing the activity of a catalyst and the selectivity of 1-hexene and 1-octene when used in olefin oligomerization.

Heat management in ethylene oligomerization

The oligomerization of ethylene using a chromium catalyst having a heteroatomic ligand may be used to provide oligomerization products that are selective towards hexene and/or octene. However, such processes also typically produce some polymer as an undesirable by product. The present invention is directed towards improvements in the selective oligomerization of ethylene.

Separation of components from a multi-component hydrocarbon stream

A process ( 10 ) to separate a multi-component hydrocarbon stream ( 26 ) comprising ethylene, at least one polymer and other components includes flashing the multi-component hydrocarbon stream in a first flash stage ( 12 ) from an elevated pressure of more than 30 bar(a) and an elevated temperature in the range of 150° C. to 135° C. to a flash pressure in the range of 10 bar(a) to 30 bar(a), producing a first ethylene-containing vapor overheads product ( 28 ) at a pressure in the range of 10 bar(a) to 30 bar(a) and a first flash stage bottoms product ( 30.1 ) which includes some ethylene, the at least one polymer and some of the other components. The flash pressure and the elevated temperature of the multi-component hydrocarbon stream ( 26 ) are selected such that the first flash stage bottoms product ( 30.1 ) has a concentration of the at least one polymer of less than 5% by mass to render the viscosity of the first flash stage bottoms product ( 30.1 ) at the temperature of the first flash stage bottoms product ( 30.1 ) in the first flash stage ( 12 ) at less than 1000 cP at a shear of 1 per second. At least a portion of the first flash stage bottoms product ( 30.1 ) is heated to a temperature in excess of 150° C. to form a heated first flash stage bottoms product ( 30.2 ). A recycle portion ( 30.3 ) of the heated first flash stage bottoms product ( 30.2 ) is combined with the multi-component hydrocarbon stream ( 26 ), which is at a temperature less than 150° C. before combination with the recycle portion ( 30.3 ), thereby to heat the multi-component hydrocarbon stream ( 26 ) to the elevated temperature in the range of 150° C. to 185° C. At least a portion ( 32 ) of the first flash stage bottoms product and the first ethylene-containing vapor overheads product ( 28 ) are withdrawn from the first flash stage ( 12 ).

Method for preparing olefin oligomers in the presence of a halogenated organic solvent and a catalyst comprising two diphosphino amine compounds

The present invention relates to a process for preparing an olefin oligomer including a step of contacting an olefin monomer with a composite catalyst in the presence of a halogenated organic solvent, wherein the composite catalyst includes: a transition metal compound; a cocatalyst; and an organic ligand including a diphosphonoamine compound in which two or more diphosphonoamines are combined via a polyvalent functional group.

Method for oligomerizing an olefin

A method for oligomerizing an olefin comprising performing a multimerization reaction of an olefin in the presence of an oligomerization catalyst system comprising a ligand compound, a transition metal compound and a co-catalyst, and controlling a reaction temperature during the multimerization reaction in a range of 30 to 150° C., such that a product of the multimerization reaction comprising 1-hexene and 1-octene has a predetermined value of a weight ratio of 1-hexene and 1-octene selected from a range of 1:0.5 to 1:7.

Method for preparing oligomerization catalyst system and oligomerization catalyst system prepared thereby

The present invention relates to a method for preparing an oligomerization catalyst system and the method comprises preparing a catalyst composition by mixing a PNP-based ligand compound and a transition metal compound, and mixing and activating a co-catalyst and the catalyst composition at a temperature from −40 to 80° C. The oligomerization catalyst system prepared by the method may maintain the activity thereof during an oligomerization reaction at a high temperature, and the reaction temperature of oligomerization may be easily controlled. Various merits in processing may be obtained.

Catalyst system for olefin oligomerization and method for olefin oligomerization using the same

The present invention relates to a catalyst system for olefin oligomerization and a method for olefin oligomerization, and more specifically, a catalyst system for olefin oligomerization and a method for olefin oligomerization that have more improved supporting efficiency due to a ligand compound capable of functioning as a tether to a support, and thus, exhibit high activity in the olefin oligomerization even with smaller amounts of catalyst composition and cocatalyst, thus enabling more efficient preparation of alpha-olefins.

Catalyst system for olefin oligomerization reaction, and method for olefin oligomerization using the same

Provided are a catalyst system for olefin oligomerization reaction and a method for olefin oligomerization, and more particularly, a catalyst system for olefin oligomerization reaction and a method for olefin oligomerization, which enable more efficient preparation of alpha-olefin, because a catalytic active ingredient is supported on a support, thereby exhibiting high activity in olefin oligomerization reaction even by using smaller amounts of a catalyst composition and a cocatalyst.

用于在铬辅助的乙烯寡聚化方法中制备1-辛烯的配体

描述了制备1‑己烯和1‑辛烯的可调混合物的方法。方法包括在足以制备包含期望量的1‑己烯和1‑辛烯的组合物的条件下使1‑己烯催化剂和1‑辛烯催化剂的混合物与乙烯接触。

Fouling inhibitor and oligomerisation of olefin using the same

본 발명은 파울링 방지제 및 이를 이용한 올레핀의 올리고머화 방법에 관한 것으로, 보다 상세하게는 올레핀의 올리고머화 방법에 있어 소정의 파울링 방지제를 투입하여, 반응 중 생성된 중합체의 총 생성량을 최소로 억제함과 동시에, 반응 중 생성된 중합체들이 반응기 내벽에 파울링되는 것을 근본적으로 방지할 수 있다. The present invention relates to an antifouling agent and a method for oligomerization of an olefin using the same, and more particularly, in the method for oligomerization of an olefin, a predetermined antifouling agent is added to minimize the total amount of polymer produced during the reaction. At the same time, it is possible to fundamentally prevent the polymers produced during the reaction from fouling the reactor inner wall.

Fouling inhibition methdo and oligomerisation of olefin

본 발명은 올레핀의 올리고머화 방법에 있어 소정의 파울링 방지제를 투입함으로써, 반응 중 생성되는 고착성 부산물의 생성을 최소로 억제함과 동시에, 반응 중 생성된 부산물들이 반응기 내벽에 파울링되는 것을 근본적으로 방지할 수 있는 파울링 방지방법 및 올레핀의 올리고머화 방법을 제공한다. According to the present invention, by adding a predetermined antifouling agent in the oligomerization method of olefins, the generation of sticky by-products generated during the reaction is minimized, and at the same time, the by-products generated during the reaction are fundamentally prevented from being fouled on the inner wall of the reactor. A method for preventing fouling and a method for oligomerization of olefins are provided.

Catalysts for preparing 1-hexene and method for preparing 1-hexene using the same

본 발명은 1-헥센 제조용 촉매와 이를 이용한 1-헥센의 제조방법에 관한 것으로, 구체적으로는 중심금속으로서 주기율표 상의 3~10족의 금속을 두 개 이상 갖고 상기 금속들이 시클로펜타디에닐(Cyclopentadienyl) 골격을 갖는 리간드를 통하여 연결된 (A) 전이금속화합물과, 상기 전이금속화합물을 활성화시키는 (B) 조촉매 화합물을 포함하는 촉매를 에틸렌 삼량화 반응에 적용시켜 1-헥센의 선택도를 높인 기술이다. The present invention relates to a catalyst for preparing 1-hexene and a method for preparing 1-hexene using the same, specifically, having two or more metals of Groups 3 to 10 on the periodic table as a central metal, and the metals are cyclopentadienyl. It is a technique to increase the selectivity of 1-hexene by applying a catalyst comprising a (A) transition metal compound connected through a ligand having a skeleton and a (B) promoter catalyst activating the transition metal compound to an ethylene trimerization reaction. .

Ligand compound, catalyst system for olefin oligomerization, and method for oligomerizing olefins using the same

The present invention relates to a ligand compound, a catalyst system for olefin oligomerization, and a method for oligomerizing olefins using the same. The ligand compound according to the present invention has a structure in which a substituent is substituted in the trans form, and thereby when used for olefin oligomerization, the activity of the catalyst used and the selectivity of 1-hexene and 1-octene can be increased.

Oligomerisation of ethylene to mixtures of 1-hexene and 1-octene

A process for the oligomerisation, preferably the tetramerisation, of ethylene to predominantly 1- hexene or 1-octene or mixtures of 1-hexene and 1-octene includes contacting ethylene with a catalyst under ethylene oiigomerisation conditions. The catalyst comprises a source of chromium, a diphosphine ligating compound, and optionally an activator. The diphosphine iigating compound includes at least one substituted aromatic ring bonded to a phosphorous atom. The substituted aromatic ring is substituted at a ring atom adjacent to the ring atom bonded to the respective phosphorous atom with a group Y, where Y is of the form -AREWG, A being O, S or NR5, where R5 is a hydrocarbyl, heterohydrocarbyl or organoheteryl group, and REWG is an electron withdrawing group.

리간드 화합물, 유기크롬 화합물, 올레핀 올리고머화용 촉매 시스템, 및 이를 이용한 올레핀의 올리고머화 방법

본 발명은 리간드 화합물, 올레핀 올리고머화용 촉매 시스템 및 이를 이용한 올레핀의 올리고머화 방법에 관한 것이다. 본 발명에 따른 올레핀 올리고머화 촉매 시스템은 우수한 촉매 활성을 가지면서도 1-헥센 또는 1-옥텐에 대한 높은 선택도를 나타내어, 보다 효율적인 알파-올레핀의 제조를 가능케 한다.

Olefin compositions

A composition comprising: a) at least 76 mol % C 10 monoolefins, the C 10 monoolefins comprising i) at least 3 mol % 2-butyl-1-hexene, ii) at least 8 mol % 3-propyl-1-heptene, iii) at least 6 mol % 4-ethyl-1-octene, and iv) at least 20 mol % 5-methyl-1-nonene; and b) at least 1 mol % C 14 monoolefins. A composition comprising at least 95 mol % C 10 monoolefins, the C 10 monoolefins comprising i) at least 3 mol % 2-butyl-1-hexene, ii) at least 10 mol % 3-propyl-1-heptene, iii) at least 7 mol % 4-ethyl-1-octene, and iv) at least 24 mol % 5-methyl-1-nonene. Processes to prepare a composition comprising at least 76 mol % C 10 monoolefins and at least 1 mol % C 14 monoolefins, or a composition comprising at least 95 mol % C 10 monoolefins, where the C 10 monoolefins comprise i) at least 3 mol % 2-butyl-1-hexene, ii) at least 10 mol % 3-propyl-1-heptene, iii) at least 7 mol % 4-ethyl-1-octene, and iv) at least 24 mol % 5-methyl-1-nonene.

Ethylene oligomerization/trimerization/tetramerization reactor

A process includes periodically or continuously introducing an olefin monomer and periodically or continuously introducing a catalyst system or catalyst system components into a reaction mixture within a reaction system, oligomerizing the olefin monomer within the reaction mixture to form an oligomer product, and periodically or continuously discharging a reaction system effluent comprising the oligomer product from the reaction system. The reaction system includes a total reaction mixture volume and a heat exchanged portion of the reaction system comprising a heat exchanged reaction mixture volume and a total heat exchanged surface area providing indirect contact between the reaction mixture and a heat exchange medium. A ratio of the total heat exchanged surface area to the total reaction mixture volume within the reaction system is in a range from 0.75 in −1 to 5 in −1 , and an oligomer product discharge rate from the reaction system is between 1.0 (lb)(hr −1 )(gal −1 ) to 6.0 (lb)(hr −1 )(gal −1 ).

Deactivator and method for decreasing by-products in olefin oligomerization using the same

The method for oligomerizing olefin according to the present disclosure is a method for oligomerizing olefin using an oligomerization catalyst system and includes deteriorating the activity of the oligomerization catalyst system by injecting a deactivator in a latter part of a multimerization reaction of olefin. The deactivator may include an additive for polymer containing at least one functional group selected from the group consisting of a hydroxyl group, an amine group and an amide group. According to the oligomerizing method, the isomer of 1-hexene and/or 1-octene and alpha-olefins with C 10 to C 40 may be decreased via the restraint of the additional side reaction of a product. Since the deactivator is an additive for enhancing the physical properties of a polymer, a separating process thereof is not required, thereby improving economic feasibility and productivity.

Oligomerization catalyst system and process for oligomerizing olefins

Among other things, this disclosure provides an olefin oligomerization system and process, the system comprising: a) a transition metal compound; b) a pyrrole compound having independently-selected C 1 to C 18 organyl groups at the 2- and 5-positions, wherein at least one of the organyl group alpha-carbon atoms attached to the 2- and 5-positions of the pyrrole compound is a secondary carbon atoms; and c) a metal alkyl. For example, the 2,5-diethylpyrrole (2,5-DEP)-based catalyst systems can afford a productivity increases over unsubstituted pyrrole catalyst systems, non-2,5-disubstituted catalyst systems, and 2,5-dimethylpyrrole (2,5-DMP) catalyst systems.