ВЫСОКОЭФФЕКТИВНЫЙ СПОСОБ АММОКСИДИРОВАНИЯ И КАТАЛИЗАТОРЫ НА ОСНОВЕ СМЕШАННЫХ ОКСИДОВ МЕТАЛЛОВ

Изобретение относится к способу получения акрилонитрила, ацетонитрила и цианистого водорода. Способ включает приведение в контакт при повышенной температуре пропилена, аммиака и кислорода в паровой фазе в присутствии катализатора. Указанный катализатор представляет собой комплекс оксидов металлов, в котором отношение элементов выражено формулой MoBiFeADEFGCeO. В формуле A обозначает по меньшей мере один элемент, выбранный из группы, состоящей из натрия, калия, рубидия и цезия; D обозначает по меньшей мере один элемент, выбранный из группы, состоящей из никеля, кобальта, марганца, цинка, магния, кальция, стронция, кадмия и бария; E обозначает по меньшей мере один элемент, выбранный из группы, состоящей из хрома, вольфрама, бора, алюминия, галлия, индия, фосфора, мышьяка, сурьмы, ванадия и теллура; F обозначает по меньшей мере один элемент, выбранный из группы, состоящей из редкоземельного элемента, титана, циркония, гафния, ниобия, тантала, алюминия, галлия, индия, таллия, кремния, германия ...

СПОСОБ ЗАСЫПКИ ПРОДОЛЬНОГО УЧАСТКА КОНТАКТНОЙ ТРУБЫ

Изобретение касается способа засыпки продольного участка контактной трубы единообразной частью твердого слоя катализатора. Способ засыпки продольного участка контактной трубы единообразной частью твердого слоя катализатора, активная масса которого представляет собой, по меньшей мере, один мультиэлементный оксид, который содержит a) элементы Мо, Fe и Bi, или b) элементы Мо и V, или c) элемент V, а также дополнительно Р и/или Sb, или активная масса которого содержит элементарное серебро на оксидном изделии-носителе, и который состоит из одного единственного сорта Sили из гомогенизированной смеси нескольких отличных друг от друга сортов Sкаталитически активных формованных изделий определенной геометрической формы или каталитически активных формованных изделий и инертных формованных изделий определенной геометрической формы, причем медиана максимальных продольных размеров L изделий определенной геометрической формы сорта Sхарактеризуется значением D , по меньшей мере, в пределах одного сорта ...

УЛУЧШЕННЫЕ СМЕШАННЫЕ МЕТАЛЛОКСИДНЫЕ КАТАЛИЗАТОРЫ АММОКСИДИРОВАНИЯ

Изобретение относится к улучшенному катализатору для использования при аммоксидировании ненасыщенного углеводорода в ненасыщенный нитрил. Описана каталитическая композиция, содержащая комплекс оксидов металлов, причем относительные соотношения перечисленных элементов в указанном катализаторе представлены следующей формулой: MoBiFeADEFGCeRbO, где А представляет собой по меньшей мере один элемент, выбранный из группы, состоящей из лития, натрия, калия и цезия; и D представляет собой по меньшей мере один элемент, выбранный из группы, состоящей из никеля, кобальта, марганца, цинка, магния, кальция, стронция, кадмия и бария; Е представляет собой по меньшей мере один элемент, выбранный из группы, состоящей из хрома, вольфрама, бора, алюминия, галлия, индия, фосфора, мышьяка, сурьмы, ванадия и теллура; F представляет собой по меньшей мере один элемент, выбранный из группы, состоящей из лантана, празеодима, неодима, самария, европия, гадолиния, тербия, диспрозия, гольмия, эрбия, тулия, иттербия ...

КАТАЛИЗАТОР РЕАКЦИИ АММОКСИДИРОВАНИЯ В ПСЕВДООЖИЖЕННОМ СЛОЕ КАТАЛИЗАТОРА И СПОСОБ ПРОИЗВОДСТВА АКРИЛОНИТРИЛА

Настоящее изобретение относится к катализатору реакции аммоксидирования в псевдоожиженном слое катализатора, способу его получения и способу производства акрилонитрила при использовании катализатора реакции аммоксидирования в псевдоожиженном слое катализатора. Катализатор содержит: диоксид кремния; и оксид металла, где композит, образованный из диоксида кремния и оксида металла, представляется приведенной ниже формулой (1): MoBiFeNiCoCeCrXO/(SiO)(1), где Мо представляет собой молибден, Bi представляет собой висмут, Fe представляет собой железо, Ni представляет собой никель, Со представляет собой кобальт, Се представляет собой церий, Cr представляет собой хром, Х представляет собой, по меньшей мере, один элемент, выбираемый из группы, состоящей из калия, рубидия и цезия, SiOпредставляет собой диоксид кремния, каждая величина из a, b, c, d, e, f, g и h представляет собой атомную долю каждого элемента и удовлетворяет неравенствам 0,1≤а≤1, 1≤b≤3, 1≤c≤6,5, 1≤d≤6,5, 0,2≤e≤1,2, f≤0,05 и 0,05≤g ...

СПОСОБ КАТАЛИТИЧЕСКОГО ОКИСЛЕНИЯ В ПАРОВОЙ ФАЗЕ

... 1. Способ каталитического окисления в паровой фазе для получения газообразного реакционного продукта при использовании многотрубного реактора с неподвижным слоем теплообменного типа, образованного множеством реакционных труб и подачей исходного газообразного материала внутрь реакционных труб, набитых катализатором, при котором осуществляют регулирование потерь давления соответствующих реакционных труб таким образом, что потери давления соответствующих реакционных труб после набивки катализатора находятся в пределах ±20% от средней потери давления реакционных труб при набивке инертного вещества во впускную часть исходного газообразного материала реакционных труб или удалении набитого катализатора и повторной набивке катализатора для реакционной трубы, имеющей потерю давления меньше средней потери давления реакционных труб; и удалении набитого катализатора и повторной набивке катализатора для реакционной трубы, имеющей потерю давления больше средней потери давления реакционных труб. 2. Способ ...

СПОСОБ ПОЛУЧЕНИЯ НЕНАСЫЩЕННОГО АЛЬДЕГИДА И/ИЛИ НЕНАСЫЩЕННОЙ КАРБОНОВОЙ КИСЛОТЫ

СПОСОБ ДЛИТЕЛЬНОГО ПРОВЕДЕНИЯ ГЕТЕРОГЕННО КАТАЛИЗИРУЕМОГО ЧАСТИЧНОГО ОКИСЛЕНИЯ В ГАЗОВОЙ ФАЗЕ ПРОПЕНА В АКРОЛЕИН

... 1. Способ длительного проведения гетерогенно катализируемого частичного окисления в газовой фазе пропена в акролеин, при котором исходную реакционную газовую смесь, содержащую пропен, молекулярный кислород и, по меньшей мере, один инертный газ-разбавитель, пропускают через находящийся при повышенной температуре катализаторный неподвижный слой, катализаторы которого выполнены так, что их активная масса содержит, по меньшей мере, один оксид мультиметалла, который содержит элементы молибден и/или вольфрам, а также, по меньшей мере, один из элементов висмут, теллур, сурьма, олово и медь, и при котором для противодействия дезактивации катализаторного неподвижного слоя в течение времени повышают температуру катализаторного неподвижного слоя, отличающийся тем, что частичное окисление в газовой фазе, по меньшей мере, один раз в календарный год прерывают и при температуре катализаторного неподвижного слоя от 250 до 550°С через катализаторный неподвижный слой пропускают содержащую молекулярный кислород ...

СПОСОБ ПОЛУЧЕНИЯ НЕНАСЫЩЕННОГО АЛЬДЕГИДА И/ИЛИ НЕНАСЫЩЕННОЙ КАРБОНОВОЙ КИСЛОТЫ

УЛУЧШЕННЫЕ СМЕШАННЫЕ МЕТАЛЛОКСИДНЫЕ КАТАЛИЗАТОРЫ АММОКСИДИРОВАНИЯ

УСОВЕРШЕНСТВОВАННЫЕ КАТАЛИЗАТОРЫ АММОКСИДИРОВАНИЯ НА ОСНОВЕ СМЕШАННЫХ ОКСИДОВ МЕТАЛЛОВ

... 1. Каталитическая композиция, содержащая комплекс оксидов металлов, причем соотношение элементов в указанной композиции представлено следующей формулой:MoBiFeADEFGCeO,где А обозначает по меньшей мере один элемент, выбранный из группы, состоящей из натрия, калия, рубидия и цезия; иD обозначает по меньшей мере один элемент, выбранный из группы, состоящей из никеля, кобальта, марганца, цинка, магния, кальция, стронция, кадмия и бария;Е обозначает по меньшей мере один элемент, выбранный из группы, состоящей из хрома, вольфрама, бора, алюминия, галлия, индия, фосфора, мышьяка, сурьмы, ванадия и теллура;F обозначает по меньшей мере один элемент, выбранный из группы, состоящей из редкоземельного элемента, титана, циркония, гафния, ниобия, тантала, алюминия, галлия, индия, таллия, кремния, германия и свинца;G обозначает по меньшей мере один элемент, выбранный из группы, состоящей из серебра, золота, рутения, родия, палладия, осмия, иридия, платины и ртути; иа, b, с, d, e, f, g, h и n, соответственно ...

СПОСОБ ПОЛУЧЕНИЯ (МЕТ)АКРИЛОВОЙ КИСЛОТЫ ИЛИ (МЕТ)АКРОЛЕИНА

... 1. Способ получения (мет)акриловой кислоты или (мет)акролеина, включающий в себя процесс каталитического газофазного окисления для получения (мет)акриловой кислоты или (мет)акролеина подачей пропилена, пропана или изобутилена и газа, содержащего молекулярный кислород, в реактор, заполненный катализатором, где газ, содержащий молекулярный кислород, подают в реактор, заполненный катализатором, во время остановки процесса каталитического газофазного окисления. 2. Способ по п.1, в котором газ, содержащий молекулярный кислород, подают в реактор с использованием устройства, обеспечивающего безопасность для применения во время остановки процесса каталитического газофазного окисления.

Способ приготовления окисного катализатора для окисления пропилена

Изобретение относится к каталитической химии, в частности к приготовлению окисного катализатора для окисления пропилена ф-лы MOABIBCOCNIDFEENAFXGYNZISIJOK, где X - элемент, выбранный из группы, включающей магний, кальций, цинк, церий или самарий, Y - калий или таллил, Z - фосфор, бор и/или вольфрам, A = 12, B = 1 - 5, C = 2 - 4, D = 0 - 3, причем C + D = 4 - 5, E = 0,3 - 1,0, F = 0,035 - 0,5, G = 0 - 0,6, H = 0,06 - 0,2, I = 0,2 - 1,0, J = 2 - 24, K - число атомов кислорода, удовлетворяющие валентности входящих элементов. Цель - получение катализатора с повышенной активностью. Приготовление ведут путем смешения соединений указанных активных компонентов в водной среде с последующей термообработкой. В качестве соединения висмута используют основную углекислую соль висмута с растворенным в ней 0,45 - 1,0 мас.% натрия в твердом растворе, или комплексное соединение основной углекислой соли висмута с 0,4 - 0,6 мас.% натрия и 0,1 - 0,3 мас.% элемента X или соединение основной углекислой соли висмута ...

Способ получения акролеина

Способ получения метакролеина

Способ приготовления оксидного катализатора для окисления или аммоксидирования пропилена

Изобретение касается каталитической химии, в частности способа приготовления оксидного катализатора, соответствующего эмпирической формуле MO12BI5-6CO2-4NI0-4FE0,4-1,0NA0,1-0,2K0,06-0,08Y0,08-0,7SI24OX, где Y - бор, вольфрам или их смесь X - количество атомов кислорода, необходимое для насыщения валентности входящих элементов, который может быть использован в химической технологии для окисления или аммоксидирования. Цель - создание более активного и селективного катализатора. Процесс ведут смешением указанных активных компонентов в водной среде, сушкой, формированием и прокаливанием при 480-500°С. При этом в качестве соединения висмута используют оксид или основной карбонат висмута в виде порошка. Использование нового катализатора позволяет повысить конверсию пропилена в процессе аммоксидирования пропилена с 47,7 до 58,3% при селективности по акрилонитрилу 83,5%.

Способ получения акрилонитрила

VERFAHREN ZUR HERSTELLUNG VON SCHALENKATALYSATOREN.

In the prodn. of catalyst films, contg. Mo, Fe, Bi and opt. one of Co, Ni, Zn and Mg and one of D, B and As, on support particles, solns. or suspensions of the catalytically active components are sprayed onto the particles which travel in a rotary container through the spray zone at 100-200 deg.C and subsequent drying and calcining zones at 200-600 deg.C so that wetting, drying and calcining occur successively.

Katalysatorzusammensetzung und ihre Verwendung zur Herstellung ungesaettigter Nitrile und zur Oxidation von Olefinen

Heterogeneous catalyzed gas phase partial oxidation of propene to acrylic acid, useful for polymers and adhesives, comprises processing a reaction mixture using two fixed catalyst beds comprising four separate reaction zones in series

Heterogeneous catalyzed gas phase partial oxidation of propene to acrylic acid comprises processing a reaction mixture using a fixed catalyst bed comprising two separate reaction zones in series, A and B maintained at 290-380[deg]C and where active mass comprises a multimetal oxide of Mo, Fe and Bi followed by a second fixed catalyst bed separated into 2 reaction zones C and D at 230-320[deg]C comprising a multimetal oxide of Mo and V. A process for the heterogeneous catalyzed partial oxidation of propene to acrylic acid in the gas phase comprises processing a reaction mixture comprising propene, molecular oxygen and at least one inert gas having a molar ratio of O 2 to C 3H 6 of at least 1 in a first reaction stage using a fixed catalyst bed. The fixed bed comprises two separate reaction zones in series, A and B maintained at 290-380[deg]C. The catalyst active mass comprises a multimetal oxide of Mo, Fe and Bi such that zone A results in a propene conversion of 40-80 mol.% and a single ...

Verfahren zu katalytischen Gasphasenoxidation von Propen zu Acrolein

OXYDATIONSKATALYSATOR UND SEINE VERWENDUNG

MOLYBDAEN, EISEN, WISMUT, NICKEL, THALLIUM SOWIE GEGEBENENFALLS MAGNESIUM, MANGAN, KOBALT UND PHOSPHOR ENTHALTENDER OXID-TRAEGERKATALYSATOR UND SEINE VERWENDUNG ZUR HERSTELLUNG VON ACROLEIN

Fliessbettkatalysator für die Ammoxidation von Propylen zu Acrylonitril

Acrolein and/or acrylic acid prodn - by catalytic oxidation of propylene with molecular oxygen

Increased yields are obtd. by carrying out the title reaction at 300-500 degrees C under a press. of 1-6 atm. abs. in the presence of water vapour and opt. an inert gas in a fluidised bed of a catalyst modified by additions of K and corresponding to the formula: K0.05-2.0.Ag0.05-1.0.Fe0.1-12.Bi0.1-12.P0.05-5.0.M012O30-110 deposited on silica.

CATALYST FOR PREPARING ACRYLONITRILE

... 1324783 Catalyst composition STAMICARBON NV 29 Sept 1970 [30 Sept 1969 21 Nov 1969 4 March 1970] 46313/70 Heading B1E [Also in Division C2] A supported catalyst composition comprising the oxides of bismuth, molybdenum and iron is formed by: (a) forming an acid solution of a bismuth salt, precipitating the bismuth ions by addition of ammonia and separating the precipitate; (b) suspending the precipitate in water, heating, agitating, gradually adding thereto an ammonium molybdate solution and adjusting the pH to between 2.5 and 7; (c) heating the suspension obtained at or near the boiling point, further adding ammonium molybdate solution, adjusting the pH to about 1.8, adding a trivalent iron salt solution and again heating at or near the boiling point and thereafter separating the solids from the liquid; and (d) mixing the solids with an aqueous composition containing an inert support substance having a pH of less than 7 and drying and calcining. The inert substance is suitably silica.

PROCESS FOR PREPARING ACRYLONITRILE

... 1345587 Ammoxidation catalyst ERDOLCHEMIE GmbH 26 April 1971 [24 April 1970] 11270/71 Heading B1E [Also in Division C2] A supported catalyst for the ammoxidation of propylene to acrylonitrile, having a specific area of 5 to 30 m2/g obtained by heating the catalyst at 580 to 800‹C for from 0.5 to 20 hours, contains. 6 to 26%, 2 to 20% and 0.5 to 10% by weight of bismuth, molybdenum and iron respectively and optionally 0.1 to 1.0% by weight of phosphorus, the quantity of carrier being from 50% to 87% by weight of the total catalyst.

PROCESS FOR CATALYTIC AMMOXIDATION OF OLEFINS TO NITRILES

... 1436475 Ammoxidation of olefins to nitriles UBE INDUSTRIES Ltd 4 Oct 1974 [16 Oct 1973] 43041/74 Heading C2C [Also in Division B1] A process for producing acrylonitrile or methacrylonitrile by catalytic ammoxidation of propylene or isobutylene comprises contacting a feed-gas mixture comprising propylene or isobutylene, ammonia and oxygen in the vapour phase at a temperature of 300‹ to 500‹ C. for a period of 0À3 to 20 seconds with a catalyst consisting essentially of an oxide of (A) molybdenum, (B) bismuth, (C) iron, (D) cobalt, (E) tungsten, (F) at least one metal selected from calcium and zinc and (E) at least one metal selected from titanium and indium in the atomic ratios defined by the following formula wherein X is the metal or metals selected from calcium and zinc and Y is the metal or metals selected from titanium and indium, and each of a, b, c, d, e and f is a positive number falling within the following ranges, a = 1 to 20, b = 0À2 to 5, c = 1 to 10, d = 0À05 to 3, e = 0À05 to ...

CATALYST AND PROCESS FOR PRODUCING UNSATURATED CARBOXYLIC ACID

... 1473035 Oxidation catalyst MITSUBISHI RAYON CO Ltd 29 May 1975 [31 May 1974] 23448/75 Heading B1E [Also in Division Cl] An oxidic catalyst composition for the oxidative formation of acrylic or methacrylic acid from the corresponding unsaturated aldehyde has the general formula wherein: X is at least one of Sb, V, W, Fe, Mn and Sn; Y is at least one of Li, Na, K, Rb and Cs; a = 0.025-1; b = 1; c = 0.0025- 0.5; O#d<0.015; e = 0.0025-1.0; f = 0.003-0.417 and g is a value to satisfy valency requirements. The composition may be formed by evaporating solvent from a solution of compounds of -the elements followed by calcination. The composition may be supported e.g. on silica, alumina or silicon carbide.

OXIDATION PROCESS FOR THE SYNTHESIS OF MALEIC ANHYDRIDE

... 1427389 Maleic anhydride STANDARD OIL CO 18 April 1973 [5 May 1972] 18738/73 Heading C2C [Also in Division B1] Maleic anhydride is produced by oxidizing 1,3-butadiene, n-butenes, crotonaldehyde, furan or a mixture thereof with molecular oxygen at 250-600‹ C. using a catalyst comprising antimony, molybdenum, oxygen, vanadium and/or iron and, optionally, tungsten, magnesium, aluminium and/or nickel in the atomic proportions Sb a Mo b V c Fed Z e O x wherein: Z=W, Mg, Al and/or Ni; a=1-9; b=1-10; c, d, e=0-1 but c + d is greater than zero; and x is a number to satisfy valency requirements. The reaction pressure is usually superatmospheric but may be atmospheric or subatmospheric with a contact time of 1 to 50 sees. The feed may contain diluents, e.g. steam, nitrogen and carbon oxides. An air to reactant ratio of 12 to 20=1 may be employed. The examples describe the use of butadiene as feed to give a maleic anhydride product containing some acrylic acid.

CATALYST AND PROCESS FOR PRODUCING METHACRYLIC ACID

Catalyst and process for producing methacrylic acid

A rhenium-free catalyst composition useful for the oxidation of unsaturated aldehydes, particularly the oxidation of methacrolein to produce methacrylic acid, comprises the combination of oxides of molybdenum, copper, phosphorus, antimony and either calcium or both calcium and cesium and optionally may include one or more of the elements Ni, Zn, Ru, Rh, Pd, Pt, As, K, Rb, Sr, Ba, Cr, V, Nb, W, Mn and rare earth metals including La.

Improvements in or relating to the production of unsaturated aliphatic carboxylic acids

... 1,127,677. Acrylic and methacrylic acids. BP. CHEMICALS (U.K.) Ltd. 21 April, 1967 [4 May, 1966], No. 19612/66. Heading C2C. [Also in Division B1] Acrylic or methacrylic acids are prepared by reacting at elevated temperature in the vapour phase acrolein or methacrolein or substances which under the reaction conditions give rise to acrolein or methacrolein, e.g. propylene and isobutene, with molecular oxygen over an oxide composition containing antimony, molybdenum and cobalt with antimony in major proportion with respect to the molybdenum and cobalt combined. The catalyst may be as a fixed or fluidized or moving bed and the oxygen may be diluted by inert gases.

OXYDEHYDROGENATION CATALYST COMPOSITION

CATALYTIC OXIDATION OF ISOBUTYLENE

PROCEDURE FOR THE PRODUCTION OF ACRYLIC ACID THROUGH HETEROGENEOUSLY CATALYZED GASEOUS PHASE OXIDATION

PROCEDURE FOR THE PRODUCTION OF ACRYLIC ACID

PROCEDURE FOR THE PRODUCTION OF AN OXIDATION OF CATALYST

PROCEDURE FOR THE PRODUCTION OF ACRYLIC ACID OR METHACRYLSAEURE

PROCEDURE FOR THE PRODUCTION AN ANTIMONY OF AN ABSTENTION OF MIXTURE METALLIC OXIDE CATALYST AND SO RECEIVED CATALYST

VERFAHREN ZUR HERSTELLUNG VON ACROLEIN UND ACRYLSAURE ODER METHACROLEIN UND METHACRYLSAURE

KATALYSATOR ZUR HERSTELLUNG VON ACRYLSAEURE ODER METHACRYLSAEURE

VERFAHREN ZUR HERSTELLUNG EINES OXYDATIONS- KATALYSATORS

CATALYST FOR PRODUCTION OLEFINISCH UNGE SAETTIGTER OF ALIPHATIC CARBONIC ACIDS

PROCEDURE FOR THE IMPROVEMENT OF THE ACHIEVEMENT OF AN ACQUAINTANCE OF OXIDATION CATALYST

PROCEDURE FOR THE PRODUCTION OF ACRYLONITRILE AND/OR METHACRYLNITRIL

PROCEDURE FOR THE PRODUCTION OF CATALYTICALLY ACTIVE ONE MULTI-ELEMENT OXIDE MASSES, AT LEAST ONE OF THE ELEMENTS NB AND W AS WELL AS THE ELEMENTS MO, V AND CU CONTAINING, MEANS OF THERMAL TREATMENT IN OXYGEN-POOR ATMOSPHERE

USE OF A CATALYTIC COMPOSITION FOR THE PRODUCTION OF ACRYLONITRIL.

Procedure for the production of a catalyst composition

PROCEDURE FOR THE PRODUCTION OF MARK A SOUR ANHYDRIDE

Catalyst for the oxidation of alkenes

Method for producing (meth)acrylic acid or (meth)acrolein

PROCESS FOR THE PREPARATION OF ACRYLONITRILE

METHOD OF PREPARING MALEIC ANHYDRIDE AND CATALYSTS UTILIZED THEREFOR

PRODUCTION OF METHACROLEIN

IMPROVEMENTS IN THE PRODUCTION OF METHACROLEIN The specification relates to a process for the production of methacrolein by vapor phase catalytic oxidation of isobutylene and/or ti-butyl alcohol, while suppressing the amount of acetone by-produced therewith. The process comprises contacting a gaseous mixture comprising isobutylene or t-butyl alcohol, molecular oxygen and steam with a metal oxide catalyst composition comprising molybdenum and bismuth as the essential metal components, the amount of steam in the gaseous mixture being maintained at no more than 4 mol per mol of isobutylene or no more than 3 mol per mol of t-butyl alcohol. The methacrolein thus produced can be used without separation or purification in the production of methacrylic acid by vapor phase catalytic oxidation without reducing the activity of the catalyst.

CATALYTIC PROCESS FOR THE PRODUCTION OF DIOLEFINS

OXIDATION CATALYST AND USE THEREOF

PROCESS FOR PREPARING MOLYBDENUM AND/OR TUNGSTEN OXIDES CATALYSTS AND OTHER METALS OXIDES CATALYSTS

... : L'invention concerne un procédé de préparation de catalyseurs comportant une phase active répondant à la formule générale : Aa Moc Wd Bb Ox dans laquelle: A représente au moins un métal choisi parmi le groupe comprenant le cobalt, le nickel, le manganèse, le plomb; B représente au moins un métal choisi parmi le groupe comprenant le fer, le bismuth, le chrome, le thallium; a représentant la somme des indices affectés à chacun des métaux A, est supérieur à 0 et inférieur ou égal à environ 12; c et d sont chacun supérieurs ou égaux à 0 et inférieurs ou égaux à 12, leur somme c + d étant égale à environ 12; b représentant la somme des indices affectés à chacun des métaux B, est supérieur à 0 et inférieur ou égal à environ 1,5¢(c+d)-a!; et x satisfait aux valences, procédé du type selon lequel, dans une première étape, on mélange en phase aqueuse des sels des métaux entrant dans la composition de la phase active, le molybdène et/ou le tungstène étant sous forme de sels d'ammonium et au moins ...

PROCESS FOR PRODUCING ACRYLONITRILE

A process for producing acrylonitrile by the vapor-phase catalytic ammoxidation of propylene, which comprises (I) reacting propylene, a molecular oxygen-containing gas and ammonia in the presence of a catalyst expressed by the following empirical formula FeaSbbMocMedTeeOfNagOh.(SiO)i wherein Me is at least one element selected from the group containing of V and W, C is at least one element selected from the group consisting of Cu, Mg, In and Ni, and the subscripts a, b, c, d, e, f, g, h and i each represents atomic rations such that when a-10; b-13 to 28; c-0.1 to 2.5; d-0.05 to 1; e-0.2 to 5; f-0 to 4(in which case b-13 to 20), or f-2 to 6 (in which case b-20 to 28); g-0 to 3; h-the number of oxygens corresponding to the oxide formed by the combination of the components, and i-25 to 200; in a fluidized bed catalytic reaction zone at a temperature of about 380 to about 500.degree.C and a pressure of about 0.2 to about 3 kg/cm2-G while adjusting the propylene/oxygen/ammonia molar ratio to ...

PROCESS FOR PRODUCING UNSATURATED ALIPHATIC ACIDS AND CATALYSTS THEREFOR

The present invention relates to a catalyst composition consisting of oxide complexes of vanadium, molybdenum and germanium plus an additional oxide selected from the group consisting of iron, nickel, thallium, phosphorus, indium, bismuth and the rare earths and optionally an oxide selected from the group copper, magnesium, manganese, aluminum, titanium, potassium, rubidium, cesium, niobium, tantalum, chromium, tungsten, uranium, cobalt, silver, zinc, tin, gallium, arsenic and antimony. These catalysts are especially useful for producing acrylic acid from acrolein and for producing methacrylic acid from methacrolein.

PROCESS FOR THE OXIDATION OF OLEFINS TO ALDEHYDES AND ACIDS

MANUFACTURE OF MALEIC ANHYDRIDE FROM BUTANE

CATALYTIC PROCESS FOR PREPARATION OF UNSATURATED CARBOXYLIC ACIDS

CATALYST COMPOSITIONS AND THEIR USE FOR THE PREPARATION OF METHACROLEIN

OXIDATION AND AMMOXIDATION CATALYSTS

PROCESS FOR THE OXIDATION OF OLEFINS USING CATALYSTS CONTAINING VARIOUS PROMOTER ELEMENTS

PROCESS FOR TRANSFORMING ACETONITRILE

CATALYST AND CATALYST GROUP

The objective of the present invention is to provide a catalyst with which pressure losses and coking are suppressed and with which it is possible to produce a target substance with a high yield, when the catalyst is used to produce the target substance by causing a material to undergo a gas phase catalytic oxidation reaction. The present invention relates to a ring-shaped catalyst which is used when producing a target substance by causing a material to undergo a gas phase catalytic oxidation reaction and which has a straight body portion and a hollow body portion, wherein the length of the straight body portion is less than the length of the hollow body portion, and the catalyst has a concave curve from an end portion of the straight body portion to an end portion of the hollow body portion in at least one end portion of the catalyst.

MULTIMETAL OXIDE COMPOSITIONS

Multimetal oxide compositions having a two-phase structure and comprising molybdenum, hydrogen, one or more of the elements phosphorus, arsenic, boron, germanium and silicon, and copper, and their use for the preparation of methacrylic acid by gas-phase catalytic oxidation.

Verfahren zur Verwertung von Acetonitril, insbesondere des bei der Herstellung von Acrylnitril als Nebenprodukt anfallenden Acetonitrils

Verfahren zur Herstellung von ungesättigten Nitrilen

Procédé d'obtention d'acrylonitrile et de méthacrylonitrile

PROCEDE D'OBTENTION D'ACRYLONITRILE ET/OU DE METHACRYLONITRILE.

Procédé de préparation d'un catalyseur

Katalysator

Process for the preparation of a mixture of acrolein and acrylic acid, or methacrolein and methacrylic acid.

[...], [...][...] D' [...] PAR oXIDATION D' [...] LA [...] EN STAGE [...]aLDEHYDE ALPHA-BETA, ET [...][...] DE [...].

PROCEDURE FOR THE VAPOR PHASE OXIDATION OF OLEFINEN USING CATALYSTS, THE DIFFERENT PROMOTER ELEMENTS CONTAINING.

PROCEDURE FOR THE PRODUCTION OF METHACRYLNITRIL.

PROCEDURE FOR THE PRODUCTION OF ALPHA, BETA-INSATIATED ALDEHYDES FROM OLEFINEN AND CATALYST.

Oxidation catalyst.

Process for the preparation of maleic anhydride

Maleic anhydride is prepared by a novel 2-step process. In the first step, butadiene is prepared from n-butane or n-butene or from a mixture of these and molecular oxygen in an undivided reaction zone of a tubular reactor. This process is carried out in the presence of a catalyst. In the second step, which is carried out in the downstream zone of the tubular reactor, maleic anhydride is obtained from the product of the first step, which may still contain starting materials besides the butadiene, and in the presence of a second catalyst.

PROCEDURE FOR THE PRODUCTION OF METHACROLEIN AND METHACRYLSAEURE.

Catalyst composition and use thereof

Preparation of butadiene

Using the fixed bed multi-tube reactor process for the preparation of acrolein and acrylic acid

CATALYTIC METHOD OF PREPARATION Of ACROLEIN AND METHACROLEINE

New catalytic and manufactoring process system of acids and unsaturated aldehydes

TUBULAR ENGINE HAS BEDS PILE UP FOR the MALEIC PREPARATION Of ANHYDRIDE

PROCESS Of CATALYTIC OXIDATION OF ISOBUTYLENE

Sophisticated method of preparation of acids alpha-beta-unsaturates by catalytic oxidation in two stages of the alpha-mono-O léfines, and acids thus obtained

Catalyst for producing unsaturated aldehyde and/or unsaturated carboxylic acid, and process for producing unsaturated aldehyde and/or unsaturated carboxylic acid using the catalyst

Provided is a catalyst for production of unsaturated aldehyde and/or unsaturated carboxylic acid, which shows excellent mechanical strength and low attrition loss and is capable of producing the object product(s) at a high yield. The catalyst comprises a catalytically active component containing molybdenum, bismuth and iron as the essential ingredients, and inorganic fibers, and is characterized in that the inorganic fibers contain at least an inorganic fiber having an average diameter of at least 8 μm and another inorganic fiber having an average diameter not more than 6 μm.

Complex Oxide Catalyst of Bi/Mo/Fe for the Oxidative Dehydrogenation of 1-Butene to 1,3-Butadiene and Process Thereof

The present invention relates to a complex oxide catalyst of Bi/Mo/Fe and an oxidative dehydrogenation of 1-butene in the presence of a catalyst herein. A catalyst of the present invention is superior to the conventional Bi/Mo catalyst in thermal and mechanical stabilities, conversion and selectivity toward 1,3-butadiene, while showing a long-term catalytic activity. 1. A process of preparing Bi/Mo/Fe complex metal oxide catalyst for the preparation of 1 ,3-butadiene , the process comprising:(a) mixing a Bi precursor solution and a Fe precursor solution;(b) adding the mixed solution to a Mo precursor solution and adjusting the pH with a basic solution;(c) conducting a hydrothermal reaction of the pH-adjusted solution to provide a product of the hydrothermal reaction; and(d) drying and calcining the product.2. The process of claim 1 , wherein the Bi precursor solution is a mixed solution of bismuth nitrate (Bi(NO).5HO) and nitric acid; or a mixed solution of bismuth acetate (Bi(CHCO)) and acetic acid.3. The process of claim 1 , wherein the Fe precursor solution is a mixed solution of iron nitrate (Fe(NO).9HO) and nitric acid; or a mixed solution of iron chloride (FeCl.4HO) and hydrochloric acid.)4. The process of claim 1 , wherein the Mo precursor solution is a mixed solution comprising ammonium molybdate ((NH)MoO.4HO).5. The process of claim 1 , wherein the basic solution is one or more selected from the group consisting of ammonia water claim 1 , sodium carbonate and potassium carbonate solution.6. The process of claim 1 , wherein the value is adjusted in the range of 3-9.7. The process of claim 1 , wherein the BMF catalyst is calcined at 450-750° C.8. The process of claim 1 , wherein the oxidative dehydrogenation is conducted at 350-450° C. and a WHSV of 1.0-5.0. This application is a division of U.S. patent application Ser. No. 12/577,869 filed Oct. 13, 2009 which claims priority to Korean Patent Application No. 10-2008-0102154 filed Oct. 17, 2008, the entire ...

Catalyst For Reducing Selectively Saturated Aldehyde And A Process For Preparing The Catalyst

[Problem] Catalyst for use in selective reduction of propionaldehyde in acrolein and/or acrylic acid and/or acrylonitrile containing propionaldehyde and/or propionic acid and/or propionitrile at low concentration. In particular, a novel catalyst for selectively reducing propionaldehyde from acrolein containing the propionaldehyde. 1. Catalyst for use in selective reduction of propionaldehyde in acrolein containing the propionaldehyde , characterized in that the catalyst contains Mo as an indispensable component , and at least one element selected from a group comprising P , Si , W , Ti , Zr , V , Nb , Ta , Cr , Mn , Fe , Co , Ni , Cu , Zn , Ga , In , Tl , Sn , Ag , As , Ge , B , Bi , La , Ba , Sb , Te , Ce , Pb , Mg , K , Rb , Cs and Al.2. The catalyst of claim 1 , wherein the catalyst contains Mo as an indispensable component claim 1 , and at least one element selected from a group comprising P claim 1 , Si claim 1 , W claim 1 , Ti claim 1 , Cr claim 1 , Mn claim 1 , Fe claim 1 , Co claim 1 , Ni claim 1 , Zn claim 1 , Ga claim 1 , Sn claim 1 , Bi claim 1 , Sb claim 1 , Ce claim 1 , Mg claim 1 , Cs and K.3. The catalyst of claim 1 , wherein the catalyst comprises a compound represented by the general formula (1):{'br': None, 'sub': a', 'b', 'o', 'd', 'e, 'AXYZO\u2003\u2003(1)'} A is at least one cation selected from elements belonging to the Group 1 to Group 16 in the Periodic Table,', 'X is P or Si,', 'Y is Mo,', 'Z is at least one element selected from a group comprising W, Ti, Zr, V, Nb, Ta, Cr, Mn, Fe, Co, Ni, Cu, Zn, Ga, In, Tl, Sn, Ag, As, Ge, B, Bi, La, Ba, Sb, Te, Ce, Pb, Mg, K, Rb, Cs and Al,', 'a, b, c and d in the formula each satisfy respective range of 0≦a<9, 0≦b≦1, 0 Подробнее

CATALYST FOR PREPARING ACROLEIN AND ACRYLIC ACID, AND PREPARATION METHOD THEREOF (AS AMENDED)

The present invention relates to a catalyst for preparing acrolein and acrylic acid, and a preparation method thereof. The catalyst according to the present invention can be uniformly packed in a reactor and the collapse of the catalyst can be minimized because it has excellent mechanical properties, and it can be stably used for a long period of time. 1. A catalyst for preparing acrolein and acrylic acid ,including an inert supporting material and a catalyst layer coated on the supporting material, wherein the catalyst layer includes a mixture of an catalytic active ingredient including at least molybdenum (Mo) and bismuth (Bi), and an inorganic fiber, and {'br': None, 'i': 'L/D≦', '0.1≦0.2\u2003\u2003[Relational Equation]'}, 'satisfying the following Relational Equationwherein, in said Relational Equation, L is the number average length of the inorganic fiber, and D is the average thickness of the coated catalyst layer.2. The catalyst according to claim 1 , wherein the catalytic active ingredient is represented by the following Chemical Formula 1:{'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, 'MoBiABCO\u2003\u2003[Chemical Formula 1]'}wherein, in Chemical Formula 1,Mo is molybdenum; Bi is bismuth; A is one or more elements selected from the group consisting of Fe, Zn, Mn, Nb, and Te; B is one or more elements selected from the group consisting of Co, Rh, and Ni; C is one or more elements selected from the group consisting of Na, K, Li, Cs, Ta, Ca, Rb, and Mg; O is oxygen; anda, b, c, d, e, and f are atomic ratios of each element, wherein b is 0.1 to 10, c is 0.1 to 10, d is 0.1 to 15, e is 0.001 to 10, and f is a number determined according to the oxidation state of each element, when a=12.3. The catalyst according to claim 1 , wherein the inorganic fiber is one or more fibers selected from the group consisting of glass fiber claim 1 , silica fiber claim 1 , alumina fiber claim 1 , and silica-alumina fiber.4. The catalyst according to claim 1 , wherein the ...

CATALYST FOR FLUIDIZED BED AMMOXIDATION REACTION, AND METHOD FOR PRODUCING ACRYLONITRILE

A catalyst for a fluidized bed ammoxidation reaction containing silica and a metal oxide, wherein a composite of the silica and the metal oxide is represented by the following formula (1). 1. A catalyst for a fluidized bed ammoxidation reaction comprising:silica anda metal oxide, wherein {'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', '2', 'A, 'MoBiFeNiCoCeCrXO/(SiO)\u2003\u2003(1);'}, 'a composite of the silica and the metal oxide is represented by the following formula (1){'sub': '2', 'claim-text': [{'br': None, 'i': a', 'b+f', 'c+d, 'α=1.5/(1.5()+) \u2003\u2003(2);'}, {'br': None, 'i': b+f', 'c+d, 'β=1.5()/() \u2003\u2003(3); and'}, {'br': None, 'i': 'd/c', 'γ=\u2003\u2003(4).'}], 'wherein Mo represents molybdenum, Bi represents bismuth, Fe represents iron, Ni represents nickel, Co represents cobalt, Ce represents cerium, Cr represents chromium, X represents at least one element selected from the group consisting of potassium, rubidium, and cesium, SiOrepresents silica, a, b, c, d, e, f, g, and h each represent an atomic ratio of each element and satisfy 0.1≤a≤1, 1≤b≤3, 1≤c≤6.5, 1≤d≤6.5, 0.2≤e≤1.2, f≤0.05, and 0.05≤g≤1, provided that h is an atomic ratio of an oxygen atom, the atomic ratio satisfying valences of constituent elements excluding silica, A represents a content of silica (% by mass) in the composite and satisfies 35≤A≤48, and values of α, β, and γ calculated from the atomic ratios of respective elements by the following expressions (2), (3), and (4) satisfy 0.03≤α≤0.08, 0.2≤β≤0.4, and 0.5≤γ≤22. The catalyst for the fluidized bed ammoxidation reaction according to claim 1 , wherein the X represents rubidium.3. The catalyst for the fluidized bed ammoxidation reaction according to claim 1 , wherein δ calculated from the atomic ratio of each element by the following expression (5) satisfies 1.1≤δ≤3.0:{'br': None, 'i': 'e/a', 'δ=\u2003\u2003(5).'}4. A method for producing the catalyst for the fluidized bed ammoxidation reaction according ...

CATALYST COMPOSITIONS AND PROCESS FOR DIRECT PRODUCTION OF HYDROGEN CYANIDE IN AN ACRYLONITRILE REACTOR FEED STREAM

The present invention relates to catalyst compositions containing a mixed oxide catalyst of formula (I) or formula (II) as described herein, their preparation, and their use in a process for ammoxidation of various organic compounds to their corresponding nitriles and to the selective catalytic oxidation of excess NHpresent in effluent gas streams to Nand/or NO. 1. A catalyst composition comprising a mixed oxide catalyst of formula (I) or (II):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'h, 'sup': 1', '2', '3', '4', '5', '6, 'MoXXXXXXO\u2003\u2003(I)'}{'br': None, 'sub': i', 'j', 'k', 'm', 'n', 'q', 'x', 'y', 'r, 'FeMoCrBiMNQXYO\u2003\u2003(II)'} [{'sup': '1', 'Xis Cr and/or W;'}, {'sup': '2', 'Xis Bi, Sb, As, P, and/or a rare earth metal;'}, {'sup': '3', 'Xis Fe, Ru, and/or Os;'}, {'sup': '4', 'Xis Ti, Zr, Hf, B, Al, Ga, In, TI, Si, Ge, Sn, and/or Pb;'}, {'sup': '5', 'Xis Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mn, Re, V, Nb, Ta, Se, and/or Te;'}, {'sup': '6', 'Xis an alkaline earth metal and/or an alkali metal;'}, '0≤a≤5;', '0.03≤b≤25;', '0≤c≤20;', '0≤d≤200;', '0≤e≤8;', '0≤f≤3; and', 'h is the number of oxygen atoms required to satisfy the valence requirements of the component elements other than oxygen present in formula (I), where', '1≤c+d+e+f≤200;', '0≤e+f≤8; and, 'wherein in the formula (I) M is Ce and/or Sb;', 'N is La, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Ti, Zr, Hf, B, Al, Ga, In, TI, Si, Ge, Sn, Pb, P, and/or As;', 'Q is W, Ru, and/or Os;', 'X is Co, Rh, Ir, Ni, Pd, Pt, Cu, Ag, Au, Zn, Cd, Hg, Mn, Re, V, Nb, Ta, Se, and/or Te;', 'Y is an alkaline earth metal and/or an alkali metal;', '0.2≤i≤100;', '0≤j≤2;', '0≤k≤2;', '0.05≤m≤10;', '0≤n≤200;', '0≤q≤8;', '0≤x≤30;', '0≤y≤8;', 'j and kj; and', 'r is the number of oxygen atoms required to satisfy the valence requirements of the component elements other than oxygen present in formula (II),, 'wherein in the formula (II) 4≤m+n+q+x+y≤200;', '0≤q+x+y≤30; and, 'wherein{'sup ...

CATALYST AND CATALYST GROUP

An object of the present invention is to provide a catalyst ensuring that when a gas-phase catalytic oxidation reaction of a material substance is conducted using a catalyst to produce a target substance, the pressure loss and coking are suppressed and the target substance can be produced in high yield. The present invention is related to a ring-shaped catalyst having a straight body part and a hollow body part, which is used when a gas-phase catalytic oxidation reaction of a material substance is conducted to produce a target substance, wherein a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved. 1. A ring-shaped catalyst having a straight body part and a hollow body part , which is used when a gas-phase catalytic oxidation reaction of an olefin or a tertiary butanol is conducted to produce a corresponding unsaturated aldehyde and/or unsaturated carboxylic acid , wherein:a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved.2. A ring-shaped catalyst having a straight body part and a hollow body part , which is used when gas-phase catalytic oxidation of an unsaturated aldehyde is conducted to produce a corresponding unsaturated carboxylic of an unsaturated aldehyde acid , wherein:a length of the straight body part is shorter than a length of the hollow body part and at least at one end part, a region from an end part of the straight body part to an end part of the hollow body part is concavely curved.3. The catalyst according to claim 1 , wherein the straight body part is present between a surface including one end part of the hollow body part and a surface including another end part of the hollow body part.4. The catalyst ...

Composite Material Containing A Bismuth-Molybdenum-Nickel Mixed Oxide Or A Bismuth-Molybdenum-Cobalt Mixed Oxide And SIO2

The present invention relates to a process for producing a composite material and also the composite material itself. The composite material contains a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and a specific SiO2 as pore former. The present invention also relates to the use of the composite material according to the invention for producing a washcoat suspension and also a process for producing a coated catalyst using the composite material according to the invention. Furthermore, the present invention also relates to a coated catalyst which has a catalytically active shell comprising the composite material according to the invention on a support body. The coated catalyst according to the invention is used for preparing [alpha],[beta]-unsaturated aldehydes from olefins.

CONJUGATED-DIOLEFIN-PRODUCING CATALYST, AND PRODUCTION METHOD THEREFOR

Provided are a catalyst which, in a reaction. for producing a conjugated diolefin by catalytic oxidative dehydrogenation from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen, may suppress the production of a coke-like substance and improve the long-term stability of the reaction; and a method for producing the same. Disclosed is a composite metal oxide catalyst for producing a conjugated diolefin by a gas phase catalytic oxidative dehydrogenation reaction from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen, the composite metal oxide catalyst having a solid acidity of 35 to 172 μmol/g. 1. A composite metal oxide catalyst for producing a conjugated diolefin by a gas phase catalytic oxidative dehydrogenation reaction from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen , the composite metal oxide catalyst having a solid acidity of 35 to 172 μmol/g.2. The composite metal oxide catalyst according to claim 1 , comprising molybdenum (Mo) claim 1 , bismuth (Bi) claim 1 , an alkali metal (AM) claim 1 , and if necessary claim 1 , an alkaline earth metal (AEM) claim 1 ,{'b': '30', 'wherein a molar ratio of the alkali metal and the alkaline earth metal with respect to bismuth, Bi/(AM AEM), is from 0.6 to 11.0.'}3. The composite metal oxide catalyst according to claim 1 , wherein the composite metal oxide catalyst satisfies the following composition formula:{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h, 'MOBiFeCoNiXYZO'}wherein Mo represents molybdenum; Bi represents bismuth; Fe represents iron; Co represents cobalt; Ni represents nickel; X represents at least one alkali metal element selected from lithium, sodium, potassium, rubidium, and cesium; Y represents at least one alkaline earth metal element selected from magnesium, calcium, strontium and barium; Z represents at least one element selected from lanthanum, cerium, praseodymium, neodymium, ...

Composite Material Containing A Bismuth-Molybdenum-Nickel Mixed Oxide Or A Bismuth-Molybdenum-Cobalt Mixed Oxide And SIO2

The present invention relates to a process for producing a composite material and also the composite material itself. The composite material contains a bismuth-molybdenum-nickel mixed oxide or a bismuth-molybdenum-cobalt mixed oxide and a specific SiO2 as pore former. The present invention also relates to the use of the composite material according to the invention for producing a washcoat suspension and also a process for producing a coated catalyst using the composite material according to the invention. Furthermore, the present invention also relates to a coated catalyst which has a catalytically active shell comprising the composite material according to the invention on a support body. The coated catalyst according to the invention is used for preparing [alpha],[beta]-unsaturated aldehydes from olefins. 1. A process for producing a composite material , comprising the steps of:(a) preparing a first aqueous solution containing salts of bismuth and of nickel or of bismuth and of cobalt;(b) preparing a second aqueous solution containing a molybdenum compound and optionally a binder;(c) adding the first aqueous solution to the second aqueous solution, forming a first suspension;{'sub': '2', '(d) adding a second suspension to the first suspension to form a third suspension, the second suspension containing SiOwhich has a pore volume in the range from 0.1 to 10 ml/g and an average particle size in the range from 3 to 20 μm; and'}(e) spray-calcining the third suspension at a temperature in the range from 200 to 600° C., to give the composite material containing a bismuth-molybdenum-nickel mixed oxide or bismuth-molybdenum-cobalt mixed oxide.2. The process as claimed in claim 1 , wherein in step (a) the first aqueous solution further comprises a salt of magnesium claim 1 , a salt of iron or a combination thereof.3. The process as claimed in claim 1 , wherein in step (a) the first aqueous solution contains a potassium compound.4. The process as claimed in claim 1 , ...

CATALYST, METHOD FOR PRODUCING CATALYST, AND METHOD FOR PRODUCING ACRYLONITRILE

The present invention provides a catalyst including Mo, Bi, and Fe, wherein P/R is 0.10 or less, wherein P is a peak intensity at 2θ=22.9±0.2° and R is a peak intensity at 2θ=26.6±0.2°, in X-ray diffraction analysis. 1. A catalyst comprising Mo , Bi , and Fe , wherein:P/R is 0.10 or less, wherein P is a peak intensity at 2θ=22.9±0.2° and R is a peak intensity at 2θ=26.6±0.2°, in X-ray diffraction analysis.2. The catalyst according to claim 1 , comprising Mo claim 1 , Bi claim 1 , and Fe claim 1 , wherein:Q/R is 0.06 or more, wherein Q is a peak intensity at 2θ=28.0±0.1° and R is a peak intensity at 2θ=26.6±0.2°, in X-ray diffraction analysis.3. The catalyst according to claim 1 , wherein the catalyst is represented by formula (1):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f, 'MoBiFeXYZO\u2003\u2003(1)'}wherein, X represents at least one element selected from the group consisting of nickel, cobalt, magnesium, calcium, zinc, strontium, barium, and tungsten;Y represents at least one element selected from the group consisting of cerium, chromium, lanthanum, neodymium, yttrium, praseodymium, samarium, aluminum, boron, gallium, and indium;Z represents at least one element selected from the group consisting of sodium, potassium, rubidium, and cesium;a, b, c, d, and e satisfy 0.1≤a≤2.0, 0.1≤b≤4.0, 0.1≤c≤10.0, 0.1≤d≤3.0, and 0.01≤e≤2.0, respectively; andf represents a number of oxygen atom needed to satisfy an atomic valence requirement of element existing other than oxygen.4. The catalyst according to claim 3 , wherein a satisfies 0.1≤a≤0.7.5. The catalyst according to claim 1 , wherein the catalyst further comprises silica.6. A method for producing the catalyst according to claim 1 , comprising:a step of spray-drying a slurry comprising Mo, Bi, and Fe to obtain a dried particle; anda step of calcining the dried particle in air and further treating in the presence of a gas that comprises oxygen and ammonia and has 0.1 to 9% by volume of water content.7. A method for ...

RESTARTING METHOD

A method for producing at least one oxidation product selected from the group consisting of acrolein and acrylic acid is provided. This method can alleviate concerns about deterioration of a gas-phase oxidation catalyst and reaction runaway in a restart period after a shutdown, and can allow the reaction to proceed in a stable state. Using a fixed-bed reactor filled with a gas-phase oxidation catalyst, at least one source gas selected from the group consisting of propylene and acrolein is subjected to a gas-phase contact oxidation reaction while a heating medium is caused to contact with or circulate through the fixed-bed reactor and thereby to heat the fixed-bed reactor. The temperature of the heating medium when the load is maximum in the restart period after the shutdown is controlled to be lower than the temperature of the heating medium when the load is maximum in an initial start-up period. 1. A method for producing at least one oxidation product selected from the group consisting of acrolein and acrylic acid , with use of a fixed-bed reactor filled with a gas-phase oxidation catalyst , by subjecting at least one source gas selected from the group consisting of propylene and acrolein to a gas-phase contact oxidation reaction while causing a heating medium to contact with or circulate through the fixed-bed reactor and thereby heating the fixed-bed reactor ,wherein a temperature of the heating medium when a load is maximum in a restart period after a shutdown is controlled to be lower than a temperature of the heating medium when a load is maximum in an initial start-up period.2. The method for producing an oxidation product according to claim 1 , wherein production of the oxidation product is restarted after the shutdown within 9000 hours after an initial start-up of the reaction.4. The method for producing an oxidation product according to claim 1 ,wherein the fixed-bed reactor is a multistage fixed-bed reactor which is equipped with a first fixed-bed reactor ...

Catalyst For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid, Method For Producing Same, And Method For Producing Unsaturated Aldehyde and/or Unsaturated Carboxylic Acid

Provided is a catalyst having high activity and yield of a target product for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid and further having high mechanical strength. The catalyst is a catalyst prepared by a method in which a catalyst formulation satisfies specified atomic ratios; and in the preparation thereof, a molybdenum component raw material is an ammonium molybdate, a solvent for dissolving the ammonium molybdate is water, a bismuth component raw material is bismuth nitrate, and a solvent for dissolving bismuth nitrate is a nitric acid aqueous solution, and the weight of water for dissolving the ammonium molybdate, the weight of the nitric acid aqueous solution for dissolving the bismuth nitrate, and the acid concentration of the nitric acid aqueous solution are satisfied with specified ranges, respectively. 1. A catalyst for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid , comprising:a compound represented by the following formula (1), {'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h, 'MoBiFeCoNiXYZO\u2003\u2003Formula (1)'}, 'the catalyst being prepared by a method in which in a step of preparing the compound represented by the following formula (1), a molybdenum component raw material is composed of only ammonium molybdate, a weight of water for dissolving the ammonium molybdate is 8.5 times or less relative to a weight of molybdenum contained in the ammonium molybdate, and a bismuth component raw material is composed of only bismuth nitrate, a weight of a nitric acid aqueous solution for dissolving the bismuth nitrate is 2.3 times or more relative to a weight of bismuth contained in the bismuth nitrate, and a nitric acid concentration of the nitric acid aqueous solution for dissolving the bismuth nitrate is 10% by weight or morewherein X is at least one element selected from the group consisting of magnesium (Mg), calcium (Ca), manganese (Mn), copper (Cu), zinc (Zn), cerium (Ce) and ...

DIENE PRODUCTION METHOD

A method for producing diene in which diene can be produced in a high yield by using a raw material including a branched olefin and a straight chain olefin is provided. The method for producing diene comprises: a step 1 of obtaining an internal olefin by removing a branched olefin from a raw material including at least the branched olefin and a straight chain olefin; a step 2 of isomerizing the internal olefin to a terminal olefin by using an isomerization catalyst; and a step 3 of producing diene from the terminal olefin obtained in the step 2 by oxidative dehydrogenation using a dehydrogenation catalyst. 1. A method for producing diene , comprising:a step 1 of obtaining an internal olefin by removing a branched olefin from a raw material including at least the branched olefin and a straight chain olefin;a step 2 of isomerizing the internal olefin to a terminal olefin by using an isomerization catalyst; anda step 3 of producing diene from the terminal olefin obtained in the step 2 by oxidative dehydrogenation using a dehydrogenation catalyst.2. The method for producing diene according to claim 1 ,wherein at least a part of the straight chain olefin is a terminal olefin, andwherein in the step 1, the branched olefin is removed from the raw material and the terminal olefin is isomerized to the internal olefin by reactive distillation.3. The method for producing diene according to claim 1 ,wherein the isomerization catalyst includes at least one selected from the group consisting of silica and alumina.4. The method for producing diene according to claim 1 ,wherein the dehydrogenation catalyst has a complex oxide including bismuth, molybdenum and oxygen.5. The method for producing diene according to claim 1 ,wherein in the step 2, the internal olefin is isomerized to the terminal olefin to obtain a first fraction including the terminal olefin and a second fraction including an unreacted portion of the internal olefin by reactive distillation.6. The method for producing ...

CATALYST FOR AMMOXIDATION, METHOD FOR PRODUCING THE SAME AND METHOD FOR PRODUCING ACRYLONITRILE

The catalyst for ammoxidation of the present invention contains a catalyst particle containing molybdenum, bismuth and iron, and has a ratio of hollow particles of 23% or less. Furthermore, a method for producing the catalyst for ammoxidation includes a step of preparing a catalyst precursor slurry containing molybdenum, bismuth and iron and having a solid concentration of 30% by mass or less, a step of spray-drying the catalyst precursor slurry at a drier inlet temperature of 120° C. to 240° C. to thereby obtain a dried particle and a step of calcining the dried particle at 500 to 750° C. 1. A catalyst for ammoxidation , comprising a catalyst particle comprising molybdenum , bismuth and iron , wherein the catalyst has a ratio of hollow particles of 23% or less.2. The catalyst for ammoxidation according to claim 1 , wherein the catalyst particle comprises a composite metal oxide having a composition represented by the following formula (1):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f, 'MoBiFeXYZO\u2003\u2003(1)'}wherein X represents at least one element selected from the group consisting of nickel, cobalt, magnesium, calcium, zinc, strontium, and barium; Y represents at least one element selected from the group consisting of cerium, chromium, lanthanum, neodymium, yttrium, praseodymium, samarium, aluminum, gallium, and indium; Z represents at least one element selected from the group consisting of potassium, rubidium, and cesium; and a, b, c, d, e, and f represent an atomic ratio of each element and satisfy 0.1≤a≤2.0, 0.1≤b≤3.0, 0.1≤c≤10.0, 0.1≤d≤3.0, and 0.01≤e≤2.0, respectively, wherein f represents a number of oxygen atoms needed to satisfy atomic valence requirements of the other existing elements.3. A method for producing the catalyst for ammoxidation according to claim 1 , the method comprising:a step of preparing a catalyst precursor slurry which comprises molybdenum, bismuth and iron and which has a solid concentration of 30% by mass or less,a step ...

METHOD FOR PRODUCING ACRYLONITRILE

A method for producing acrylonitrile, having: a catalyst treatment step of preparing a composite metal oxide catalyst including molybdenum, bismuth, and iron and including 50 ppm or more of carbon; and a vapor-phase catalytic oxidation step of subjecting propylene to ammoxidation reaction using the composite metal oxide catalyst to produce acrylonitrile. 1. A method for producing acrylonitrile , comprising:a catalyst treatment step of preparing a composite metal oxide catalyst comprising molybdenum, bismuth, and iron and comprising 50 ppm or more of carbon; anda vapor-phase catalytic oxidation step of subjecting propylene to ammoxidation reaction using the composite metal oxide catalyst to produce the acrylonitrile.2. The method for producing the acrylonitrile according to claim 1 , wherein the catalyst treatment step has:a pre-step of treating a composite metal oxide comprising molybdenum, bismuth, and iron under a reducing gas and oxygen atmosphere for 50 hours or longer; anda post-step of circulating the composite metal oxide in a hopper with nitrogen or air.3. The method for producing the acrylonitrile according to claim 1 , whereinthe composite metal oxide catalyst prepared in the catalyst treatment step comprises 5000 ppm or less of carbon.4. The method for producing the acrylonitrile according to claim 1 , whereina calorific value of an exothermic peak having a peak top at 600° C. or higher in a DTA analysis is 80 J/g or less in the composite metal oxide catalyst prepared in the catalyst treatment step.5. The method for producing the acrylonitrile according to claim 1 , whereinthe carbon comprised in the composite metal oxide catalyst in the vapor-phase catalytic oxidation step is 5000 ppm or less.6. The method for producing the acrylonitrile according to claim 1 , whereinan oxygen concentration at an discharge port of a fluidized bed reactor in the vapor-phase catalytic oxidation step is 0.2 to 1.0% by volume.7. The method for producing the acrylonitrile ...

CATALYST FOR CONJUGATED DIOLEFIN PRODUCTION AND METHOD FOR PRODUCING SAME

Provided are a catalyst that may suppress the production of a coke-like substance in a reaction for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen. A composite metal oxide catalyst for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen by a catalytic oxidative dehydrogenation reaction, the composite metal oxide catalyst having a relative intensity range of X-ray diffraction peaks represented by the following Formula (A): 0≦Rh(=Ph1/Ph2)<0.8 (A) wherein Ph1 represents the maximum peak height within the range of 2θ=28.1°±0.2° for the X-ray diffraction peaks; Ph2 represents the maximum peak height within the range of 2θ=27.9°±0.2° for the X-ray diffraction peaks; and Rh represents the relative intensity ratio of Ph1 with respect to Ph2. 1. A composite metal oxide catalyst for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen by a catalytic oxidative dehydrogenation reaction , the composite metal oxide catalyst having a relative intensity range of X-ray diffraction peaks represented by the following Formula (A):{'br': None, 'i': ≦Rh', 'Ph', '/Ph, '0(=12)<0.8\u2003\u2003(A)'}wherein Ph1 represents the maximum peak height within the range of 2θ=28.1°±0.2° for the X-ray diffraction peaks; Ph2 represents the maximum peak height within the range of 2θ=27.9°±0.2° for the X-ray diffraction peaks; and Rh represents the relative intensity ratio of Ph1 with respect to Ph2.2. A composite metal oxide catalyst for producing a conjugated diolefin from a mixed gas including a monoolefin having 4 or more carbon atoms and molecular oxygen by a catalytic oxidative dehydrogenation reaction , the composite metal oxide catalyst having a relative area intensity range of X-ray diffraction peaks represented by the following Formula (B):{'br': None, 'i': ≦Ra', 'Pa', '/Pa, '0(=12 ...

METHOD FOR THE HYDROTHERMAL PREPARATION OF MOLYBDENUM-BISMUTH-COBALT-IRON-BASED MIXED OXIDE CATALYSTS

The present invention relates to a process for preparing molybdenum-bismuth-iron-cobalt-based multielement oxide catalysts by means of hydrothermal synthesis, wherein the hydrothermal synthesis is conducted with an aqueous solution and/or an aqueous suspension of precursor compounds of the elements present in the multielement oxide catalyst to be prepared, the pH of which has been adjusted to a value between about 6 and about 8. The present invention also further relates to the multielement oxide catalysts obtainable by this process and to the use thereof in the partial gas phase oxidation of olefins and tert-butanol. 1. A process for preparing a multielement oxide catalyst , the process comprising:providing a mixture of an aqueous solution and/or an aqueous suspension of precursor compounds of elements present in the multielement oxide catalyst in an amount to achieve stoichiometry thereof,setting a pH of the mixture obtained from the providing to a value between 5.5 and 8.5,reacting the mixture comprising the precursor compounds obtained from the setting under solvothermal reaction conditions in an autoclave at a temperature of from 100° C. to 600° C. to form the multielement oxide catalyst, andseparating the multielement oxide catalyst from the aqueous solution and/or suspension, {'br': None, 'sub': a', 'b', 'c', 'd', 'g', 'f', 'g', 'h', 'i', 'j', 'x, 'MoBiCoFeNiXX′X″X′″X″″O\u2003\u2003(I),'}, 'wherein the multielement oxide catalyst is of formula (I)whereinX is W or P,X′ is Li, K, Na, Rb, Cs, Mg, Ca, Ba or Sr,X″ is Ce, Mn, Cr or V,X″′ is Nb, Se, Te, Sm, Gd, La, Y, Pd, Pt, Ru, Ag or Au,X″″ is Si, Al, Ti or Zr,a is 12,b is 1 to 4,c is 4 to 10,d is 1 to 4,e is 0 to 4,f is 0 to 5,g is 0 to 2,h is 0 to 5,i is 0 to 2,j is 0 to 800, andx is a number which is determined by a valency and frequency of the elements other than oxygen.2. The process according to claim 1 , wherein the precursor compounds in step a) are salts.3. The process according to claim 1 , wherein the ...

Catalyst and Process for the Oxidative Dehydrogenation of N-Butenes to Butadiene

The invention relates to a catalyst which comprises a catalytically active multimetal oxide which comprises molybdenum and at least one further metal has the general formula (I) 1. A catalyst which comprises a catalytically active multimetal oxide which comprises molybdenum and at least one further metal has the general formula (I){'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'x, 'sup': 1', '2, 'MoBiMnCoFeXXO\u2003\u2003(I),'}where the variables have the following meanings:{'sup': '1', 'X=Si and/or Al;'}{'sup': '2', 'X=Li, Na, K, Cs and/or Rb;'}a=0.2 to 1;b=0 to 2;c=2 to 10;d=0.5 to 10;e=0 to 10;f=0 to 0.5; andx=is a number determined by the valence and abundance of the elements other than oxygen in (I).2. The catalyst according to claim 1 , wherein Xin formula (I) is silicon.3. The catalyst according to claim 1 , wherein Xin formula (I) is potassium.4. The catalyst according to claim 1 , wherein claim 1 , in formula (I) claim 1 ,a=0.5 to 4;b=0.1 to 0.8;c=5 to 9;d=2 to 6;e=1 to 1.0; andf=0.01 to 0.3.5. The catalyst according claim 1 , which is an all-active catalyst.6. The catalyst according claim 1 , which is a coated catalyst comprising a support body (a) and a shell (b).7. The catalyst according to claim 6 , wherein the support body is a hollow cylinder having a length of from 2 to 6 mm claim 6 , an external diameter of from 4 to 8 mm and a wall thickness of from 1 to 2 mm.8. The catalyst according to claim 6 , wherein the support body is composed of steatite.9. The catalyst according to claim 6 , wherein the shell (b) has a layer thickness D of from 50 to 600 μm.10. A process for the oxidative dehydrogenation of n-butenes to butadiene claim 1 , wherein a starting gas mixture comprising n-butenes is mixed with an oxygen-comprising gas and brought into contact with a coated catalyst according of arranged in a fixed catalyst bed at a temperature of from 220 to 490° C. in a fixed-bed reactor.11. The process according to claim 10 , wherein the fixed-bed ...

OXIDE CATALYST

An oxide catalyst for use in an oxidation reaction of an olefin and/or an alcohol, the oxide catalyst comprising: the oxide catalyst contains molybdenum, bismuth, iron, cobalt, and cerium; an atomic ratio a of bismuth to 12 atoms of molybdenum is 2≦a≦6, an atomic ratio b of iron to 12 atoms of molybdenum is 2.5 Подробнее

Catalyst

A catalyst for producing unsaturated aldehyde and unsaturated carboxylic acid, wherein the cumulative pore volume (A) of pores having a pore diameter of 1 μm or more and 100 μm or less, in the catalyst, is 0.12 ml/g or more and 0.19 ml/g or less, and the ratio (A/B) of the cumulative pore volume (A) to the cumulative pore volume (B) of pores having a pore diameter of 1 μm or more and 100 μm or less, in a pulverized product not passing through a Tyler 6 mesh, in a pulverized product obtained by pulverization of the catalyst under a particular condition is 0.30 or more and 0.87 or less.

METHOD FOR PRODUCING AMMOXIDATION CATALYST, AND METHOD FOR PRODUCING ACRYLONITRILE

A method for producing an ammoxidation catalyst, comprising: 1. A method for producing an ammoxidation catalyst , comprising:a step of preparing a precursor slurry that is a precursor of the catalyst;a drying step of obtaining a dry particle from the precursor slurry; anda calcination step of calcining the dry particle, whereinthe step of preparing the precursor slurry is a step of mixing a first solution or slurry having a first pH and a second solution or slurry to obtain a solution or slurry having a second pH after completion of mixing,a time during which a pH of a mixture passes through a particular range having an upper limit and a lower limit while the second solution or slurry is mixed is 1-70 seconds, the upper limit and the lower limit being designated as a third pH and a fourth pH respectively, andthe third pH and the fourth pH are set between the first pH and the second pH.2. The method for producing the ammoxidation catalyst according to claim 1 , whereinthe step of preparing the precursor slurry is a step of mixing a second solution or slurry comprising at least bismuth and iron with a first solution or slurry comprising at least molybdenum to obtain a precursor slurry,a pH of the first solution or slurry before the second solution or slurry is mixed is within a range of 5.5-7.0,a pH of the first solution or slurry after mixing of the second solution or slurry is completed is within a range of 0.1-1.9, anda time during which a pH of a mixture passes through a range of 4.0-2.0 while the second solution or slurry is mixed is 1-70 seconds.3. The method for producing the ammoxidation catalyst according to claim 1 , whereinthe step of preparing the precursor slurry is a step of mixing a second solution or slurry comprising at least molybdenum with a first solution or slurry comprising at least bismuth and iron to obtain a precursor slurry,a pH of the first solution or slurry before the second solution or slurry is mixed is within a range of 0.1-0.5,a pH of ...

METHOD FOR PRODUCING UNSATURATED ALDEHYDE AND UNSATURATED CARBOXYLIC ACID

The present invention relates to a method for producing unsaturated aldehydes and unsaturated carboxylic acids. According to the present invention, a method for producing unsaturated aldehydes and unsaturated carboxylic acids which can impart activity and control temperature independently in fixed catalyst layer zones in a shell-and-tube reactor, thereby exhibiting improved yield and operation stability, is provided. 1. A method for producing unsaturated aldehydes and unsaturated carboxylic acids corresponding to a raw material in which at least one compound selected from propylene , isobutylene , t-butyl alcohol , and methyl-t-butyl ether is added as the raw material and subjected to gas phase contact oxidation with molecular oxygen or a molecular oxygen-containing gas , using a fixed-bed multistage heat medium circulating type of multi-tubular shell-and-tube reactor filled with a catalyst ,wherein the multistage heat medium circulating type of multi-tubular shell-and-tube reactor includes a cylindrical shell, a plurality of tube sheets for separating the inside of the shell into a plurality of independent spaces, a baffle for dividing the plurality of independent spaces inside the shell into two spatially continuous zones, and a plurality of reaction tubes fixed to the inside of the shell while penetrating through the plurality of tube sheets and the baffle,wherein, in the plurality of independent spaces inside the shell, heat transfer to the reaction tube is performed independently at a temperature of 280 to 400° C. by the flow of an independent heat medium, andwherein at least four spatially continuous fixed catalyst layer zones exist in the reaction tube, and the fixed catalyst layer zones have high activity in the direction from an inlet to an outlet of the reaction tube.2. The method for producing unsaturated aldehydes and unsaturated carboxylic acids according to claim 1 , wherein claim 1 , in the plurality of independent spaces inside the shell claim 1 , ...

Process For Producing Shaped Catalyst And Process For Producing Diene Or Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid Using The Shaped Catalyst

There is provided a process for producing a shaped catalyst for a fixed bed oxidation reaction or a fixed bed oxidative dehydrogenation reaction, the catalyst having both of sufficient mechanical strength and catalyst performance, and the catalyst is produced by supporting a catalyst powder containing a complex metal oxide having molybdenum as an essential ingredient on an inert support by a tumbling granulation method at a relative centrifugal force of 1 to 35G. 1. A process for producing a shaped catalyst for a fixed-bed oxidation reaction or a fixed-bed oxidative dehydrogenation reaction , comprising:supporting a catalyst powder containing a complex metal oxide having molybdenum as an essential ingredient on an inert support by a tumbling granulation method at a relative centrifugal force of 1 to 35G.2. The process for producing a shaped catalyst according to claim 1 , {'br': None, 'sub': a', 'b', 'c', 'd', 'f', 'g', 'h', 'x, 'MoBiNiCoFeXYO\u2003\u2003Formula (1)'}, 'wherein the complex metal oxide has a composition represented by the following formula (1)wherein Mo, Bi, Ni, Co, Fe and O represents molybdenum, bismuth, nickel, cobalt, iron and oxygen, respectively;X represents at least one element selected from the group consisting of tungsten, antimony, tin, zinc, chromium, manganese, magnesium, silicon, aluminum, cerium, tellurium, boron, germanium, zirconium and titanium;Y represents at least one element selected from the group consisting of potassium, rubidium, calcium, barium, thallium and cesium;a, b, c, d, f, g, h and x represents numbers of atoms of molybdenum, bismuth, nickel, cobalt, iron, X, Y and oxygen, respectively, and a=12, b=0.1 to 7, c+d=0.5 to 20, f=0.5 to 8, g=0 to 2, h=0.005 to 2, and x=a value determined depending on oxidation states of individual elements.3. The process for producing a shaped catalyst according to claim 1 ,wherein an attrition degree of the shaped catalyst to be produced is 3% by weight or less.4. The process for producing ...

Metal oxide catalyst, method for producing same, and apparatus for producing same

A metal oxide catalyst, which has a bulk composition represented by formula (1) below and which is used to produce a conjugated diolefin by an oxidative dehydrogenation reaction between a monoolefin, having 4 or more carbon atoms, and molecular oxygen, wherein standard deviation obtained by dividing a ratio of Bi molar concentration relative to Mo molar concentration at the surface of a catalyst particle by a ratio of the Bi molar concentration relative to the Mo molar concentration in a catalyst bulk is 0.3 or less. Mo 12 Bi p Fe q A a B b C c D d E e F f O x   (1) (In the formula, A is at least one type of element selected from the group consisting of Ni and Co, B is at least one type of element selected from among alkali metal elements, C is at least one type of element selected from the group consisting of Mg, Ca, Sr, Ba, Zn and Mn, D is at least one type of rare earth element, E is at least one type of element selected from the group consisting of Cr, In and Ga, F is at least one type of element selected from the group consisting of Si, Al, Ti and Zr, O is oxygen, p, q, a, b, c, d, e, f and x denote the number of atoms of Bi, Fe, A, B, C, D, E, F and oxygen, respectively, relative to 12 Mo atoms, and are such that 0.1≤p≤5, 0.5≤q≤8, 0≤a≤10, 0.02≤b≤2, 0≤c≤5, 0≤d≤5, 0≤e≤5 and 0≤f≤200, and x is the number of oxygen atoms required to satisfy valency requirement of other elements present.)

Mechanically stable hollow cylindrical shaped catalyst bodies for gas phase oxidation of an alkene to an unsaturated aldehyde and/or an unsaturated carboxylic acid

A hollow cylindrical shaped catalyst body for gas phase oxidation of an alkene to an α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid comprises a compacted multimetal oxide having an external diameter ED, an internal diameter ID and a height H, wherein ED is in the range from 3.5 to 4.5 mm; the ratio q=ID/ED is in the range from 0.4 to 0.55; and the ratio p=H/ED is in the range from 0.5 to 1. The shaped catalyst body is mechanically stable and catalyzes the partial oxidation of an alkene to the products of value with high selectivity. It provides a sufficiently high catalyst mass density of the catalyst bed and good long-term stability with acceptable pressure drop.

PROCESS FOR PREPARING AN UNSATURATED ALDEHYDE AND/OR AN UNSATURATED CARBOXYLIC ACID

An α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid are prepared by gas phase oxidation of alkene with molecular oxygen over a fixed catalyst bed comprising a bed of hollow cylindrical shaped catalyst bodies having a multimetal oxide active composition. The fixed catalyst bed comprises at least three successive reaction zones; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor outlet; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor inlet; and the value WT=(ED−ID)/2 in the reaction zone in which the highest local temperature in the fixed catalyst bed occurs is lower than in the other reaction zones, in which ED is the external diameter and ID is the internal diameter of the shaped catalyst body. The yield of the products of value is enhanced in this way. 2. The process according to claim 1 , wherein the multimetal oxide active composition comprises iron claim 1 , bismuth and at least one of molybdenum and tungsten.4. The process according to claim 1 , wherein the cylindrical shaped catalyst bodies have a geometric volume of less than 80 mm.5. The process according to claim 1 , wherein a volume-specific catalyst activity of the reaction zone in which the highest local temperature in the fixed catalyst bed occurs is lower than volume-specific catalyst activity in the other reaction zones.6. The process according to claim 1 , wherein a catalyst active composition density in the reaction zone in which the highest local temperature in the fixed catalyst bed occurs is lower than catalyst active composition densities in the other reaction zones.7. The process according to claim 1 , wherein the cylindrical shaped catalyst bodies have a density of from 1.2 to 2.0 g/cm.8. The process according to claim 1 , whereinthe external diameter of the cylindrical shaped catalyst bodies in the reaction zone in which the highest local ...

METHOD FOR PRODUCING AMMOXIDATION CATALYST AND METHOD FOR PRODUCING ACRYLONITRILE

A method for producing an ammoxidation catalyst, the method including: a step (i) of preparing a starting material slurry comprising molybdenum, bismuth, iron, and a carboxylic acid compound; a step (ii) of stirring the starting material slurry in a temperature range of 30 to 50° C. for 20 minutes to 8 hours, thereby preparing a precursor slurry; a step of spray-drying the precursor slurry, thereby obtaining a dried particle; and a step of calcining the dried particle. 1. A method for producing an ammoxidation catalyst , the method comprising:a step (i) of preparing a starting material slurry comprising molybdenum, bismuth, iron, and a carboxylic acid compound;a step (ii) of stirring the starting material slurry in a temperature range of 30 to 50° C. for 20 minutes to 8 hours, thereby preparing a precursor slurry;a step of spray-drying the precursor slurry, thereby obtaining a dried particle; anda step of calcining the dried particle.2. The method for producing the ammoxidation catalyst according to claim 1 , wherein the precursor slurry has a viscosity of 1 to 100 cp.3. The method for producing the ammoxidation catalyst according to claim 1 , wherein the ammoxidation catalyst has a composition represented by the following formula (1):{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f, 'MoBiFeXYZO\u2003\u2003(1)'}wherein X represents at least one element selected from the group consisting of nickel, cobalt, magnesium, calcium, zinc, strontium, and barium; Y represents at least one element selected from the group consisting of cerium, chromium, lanthanum, neodymium, yttrium, praseodymium, samarium, aluminum, gallium, and indium; Z represents at least one element selected from the group consisting of potassium, rubidium, and cesium; provided that a proportion of cobalt is 20 atomic % or more and/or a proportion of magnesium is 20 atomic % or less in the element X; a, b, c, d, and e satisfy 0.1≤a≤2.0, 0.1≤b≤3.0, 0.1≤c≤10.0, 0.1≤d≤3.0 and 0.01≤e≤2.0, respectively; and ...

MIXED METAL OXIDE AMMOXIDATION CATALYSTS

A catalytic composition useful for the conversion of an olefin selected from the group consisting of propylene, isobutylene or mixtures thereof, to acrylonitrile, methacrylonitrile, and mixtures thereof. The catalytic composition comprises a complex of metal oxides comprising rubidium, bismuth, cerium, molybdenum, iron and other promoters, with a desirable composition. 1. A catalytic composition comprising a complex of metal oxides wherein the relative ratios of the listed elements in said catalyst are represented by the following formula:{'br': None, 'sub': m', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'n', 'x, 'MoBiFeADEFGCeRbO'} D is at least one element selected from the group consisting of nickel, cobalt, manganese, zinc, magnesium, calcium, strontium, cadmium and barium;', 'E is at least one element selected from the group consisting of chromium, tungsten, boron, aluminum, gallium, indium, phosphorus, arsenic, antimony, vanadium and tellurium;', 'F is at least one element selected from the group consisting of lanthanum, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium thulium, ytterbium, lutetium, scandium, yttrium, titanium, zirconium, hafnium, niobium, tantalum, aluminum, gallium, indium, thallium, silicon lead and germanium;', 'G is at least one element selected from the group consisting of silver, gold, ruthenium, rhodium, palladium, osmium, iridium, platinum and mercury; and, 'wherein A is at least one element selected from the group consisting of lithium, sodium, potassium, and cesium; and'} a is greater than 0, but less than or equal to 7,', 'b is 0.1 to 7,', 'c is greater than 0, but less than or equal to 5,', 'd is 0.1 to 12,', 'e is 0 to 5,', 'f is 0 to 5,', 'g is 0 to 0.2,', 'h is 0.01 to 5,', 'm is 10 to 15,', 'n is greater than 0, but less than or equal to 5,', 'x is the number of oxygen atoms required to satisfy the valence requirements of the other component elements present; and, 'a, b, c, d, e, f, g, ...

Method For Producing Unsaturated Aldehyde And/or Unsaturated Carboxylic Acid

Provided is a method capable of producing acrolein and/or acrylic acid, or methacrolein and/or methacrylic acid, stably in a high yield over a long period of time advantageously even in a high-load reaction, and the method is a method in which when preparing two or more kinds of catalysts having different formulations and stacking two or more layers in the axial direction of the tube, the catalysts are filled in such a manner that not only the component amount of bismuth relative to molybdenum decreases from the gas inlet side toward the gas outlet side, but also the component amount of iron relative to molybdenum increases from the gas inlet side toward the gas outlet side. 1. A method for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid , the method comprising:subjecting an alkene to gas-phase catalytic partial oxidation with molecular oxygen by using a multitubular oxidation reactor having a complex metal oxide catalyst filled therein, thereby producing a corresponding unsaturated aldehyde and/or unsaturated carboxylic acid,wherein when preparing two or more kinds of catalysts having different formulations and stacking two or more layers in an axial direction of a tube, thereby achieving multilayer filling, the catalysts are filled in such a manner that not only a component amount of bismuth relative to molybdenum decreases from a gas inlet side toward a gas outlet side, but also a component amount of iron relative to molybdenum increases from the gas inlet side toward the gas outlet side.2. The production method according to claim 1 , {'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h, 'MoBiFeCoNiXYZO\u2003\u2003Formula (1)'}, 'wherein the catalyst for producing an unsaturated aldehyde and/or an unsaturated carboxylic acid contains a compound represented by the following formula (1), the catalyst being prepared by a method in which in a step of preparing the compound represented by the following formula (1): a molybdenum ...

CATALYST FOR OXIDATIVE DEHYDROGENATION OF BUTENE AND METHOD FOR PRODUCING THE SAME

The present invention relates to a catalyst for oxidative dehydrogenation of butene and a method for producing the same. The catalyst for oxidative dehydrogenation of butene has a large amount of Mo—Bi phase acting as a reaction active phase on the surface, and therefore, can exhibit high catalytic activity, high conversion rate and high butadiene selectivity in the oxidative dehydrogenation of butene. 1. A catalyst for oxidative dehydrogenation of butene , which is represented by the following Composition Formula 1 , {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, 'MoBiCo(M1)(M4)O\u2003\u2003[Composition Formula 1]'}, 'wherein a surface composition of the catalyst measured by X-ray photoelectron spectroscopy, a molar content of bismuth (Bi) is higher than a molar content of cobalt (Co),'}in Composition Formula 1, Mo is molybdenum, Bi is bismuth, Co is cobalt, O is oxygen,M1 is one or more Group 1 metal elements,M4 is one or more period 4 transition metal elements excluding cobalt (Co),a is from 9 to 25, b is from 0.5 to 2, c is from 1 to 10, d is from 0.01 to 1, e is from 0.5 to 5, andf is from 30 to 50.2. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the period 4 transition metal comprises at least one selected from the group consisting of titanium claim 1 , vanadium claim 1 , chromium claim 1 , manganese claim 1 , iron claim 1 , nickel claim 1 , copper claim 1 , and zinc.3. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the Group 1 metal comprises at least one selected from the group consisting of sodium claim 1 , potassium claim 1 , rubidium claim 1 , and cesium.4. The catalyst for oxidative dehydrogenation of butene according to claim 1 , wherein the catalyst satisfies the following Calculation Formula 1{'br': None, 'BARS/BART>6, \u2003\u2003[Calculation Formula 1]'}in Calculation Formula 1BARS is the molar content of bismuth/the molar content of cobalt on the catalyst surface, measured ...

METHOD FOR PRODUCING CATALYST AND METHOD FOR PRODUCING ACRYLONITRILE

A method for producing a catalyst according to the present invention includes: a preparation step of preparing a precursor slurry comprising molybdenum, bismuth, iron, silica, and a carboxylic acid; a drying step of spray-drying the precursor slurry and thereby obtaining a dried particle; and a calcination step of calcining the dried particle, wherein the preparation step comprises: a step (I) of mixing a starting material for silica with the carboxylic acid and thereby preparing a silica-carboxylic acid mixed liquid; and a step (II) of mixing the silica-carboxylic acid mixed liquid, molybdenum, bismuth, and iron. 1. A method for producing a catalyst , comprising:a preparation step of preparing a precursor slurry comprising molybdenum, bismuth, iron, silica, and a carboxylic acid;a drying step of spray-drying the precursor slurry and thereby obtaining a dried particle; anda calcination step of calcining the dried particle, whereinthe preparation step comprises:a step (I) of mixing a starting material for silica with the carboxylic acid and thereby preparing a silica-carboxylic acid mixed liquid; anda step (II) of mixing the silica-carboxylic acid mixed liquid, molybdenum, bismuth, and iron.3. The method for producing the catalyst according to claim 2 , wherein in the catalyst claim 2 , a standard deviation of values obtained by dividing a ratio of a molar concentration of Bi to a molar concentration of Mo on a surface of catalyst particles by a ratio of a molar concentration of Bi to a molar concentration of Mo in a metal oxide bulk is 0.2 or less.4. The method for producing the catalyst according to claim 1 , whereinthe step (II) comprises the following (i) step and (ii) step, andthe drying step comprises the following (iii) step;(i) a step of preparing a Mo-containing liquid comprising at least Mo and a Bi-containing liquid comprising at least Bi,(ii) a step of continuously supplying the Mo-containing liquid to a first flow channel, continuously supplying the Bi- ...

Molybdenum Based Complex Oxide Catalyst, Its Preparation Method and Use

Disclosed are a molybdenum based composite oxide catalyst, its preparation method and use. The catalyst has the following general formula: BiMoMNO; wherein M is one of V, Cr, Mn, Fe, Co, Ni and Cu, or a mixture of two or more of V, Cr, Mn, Fe, Co, Ni and Cu in any ratio; N is one of Na, K, Cs, Ca and Ba, or a mixture of two or more of Na, K, Cs, Ca and Ba in any ratio; x=0.5˜20; y=0.05˜20; z=0.0˜15; a is a number satisfying the valance of each atom. The catalyst is prepared by the following method: firstly mixing a certain amount of the lead metal oxides according to the chemical proportion and then grinding the mixture with high-energy ball milling for a period of time to obtain the molybdenum based composite oxide catalyst. The catalyst exhibits excellent performance when using for preparation of butadiene by oxidative dehydrogenation of butene, and the preparation process is simple, controllable, and repeatable. Waste water or waste gas that is difficult to be treated is not produced during preparation. 1. A molybdenum based composite oxide catalyst having the following formula:{'br': None, 'sub': x', 'y', 'z', 'a, 'BiMoMNO'}wherein M is one of V, Cr, Mn, Fe, Co, Ni and Cu, or a mixture of two or more thereof in any ratio;N is one of Na, K, Cs, Ca and Ba, or a mixture of two or more thereof in any ratio;x=0.5˜20;y=0.05˜20;z=0.01˜5;a is a number satisfying the valance of each atom;wherein the catalyst is prepared by the method comprising the steps of:(1) weighing bismuth molybdate and oxide precursors of other metal elements according to the proportions of ingredients in the above formula, grinding and sieving to obtain a mixture;(2) transferring the mixture to a ball mill jar, ball milling same to produce the desired molybdenum based composite oxide catalyst.2. The molybdenum based composite oxide catalyst according to claim 1 , wherein M is one or two of V claim 1 , Fe claim 1 , Co and Ni; and N is K or Cs.3. The molybdenum based composite oxide catalyst ...

Oxide catalyst and method for producing the same, and methods for producing unsaturated aldehyde, diolefin, and unsaturated nitrile

An object of the present invention is to provide an oxide catalyst that prevents the reduction degradation of the catalyst even during industrial operation for a long time and less reduces unsaturated aldehyde yields, diolefin yields, or unsaturated nitrile yields, and a method for producing the same, and methods for producing unsaturated aldehyde, diolefin, and unsaturated nitrile using the oxide catalyst. The present invention provides an oxide catalyst for use in the production of unsaturated aldehyde, diolefin, or unsaturated nitrile from olefin and/or alcohol, the oxide catalyst satisfying the following (1) to (3): (1) the oxide catalyst comprises molybdenum, bismuth, iron, cobalt, and an element A having an ion radius larger than 0.96 Å (except for potassium, cesium, and rubidium); (2) an atomic ratio a of the bismuth to 12 atoms of the molybdenum is 1≦a≦5, an atomic ratio b of the iron to 12 atoms of the molybdenum is 1.5≦b≦6, an atomic ratio c of the element A to 12 atoms of the molybdenum is 1≦c≦5, and an atomic ratio d of the cobalt to 12 atoms of the molybdenum is 1≦d≦8; and (3) the oxide catalyst comprises a disordered phase consisting of a crystal system comprising the molybdenum, the bismuth, the iron, and the element A.

MULTIMETAL OXIDE COMPOSITIONS COMPRISING Mo, Bi, Fe AND Cu

Multimetal oxide composition comprising Mo, Bi, Fe, Cu and one or more than one of the elements Co and Ni and use thereof. 1. A multimetal oxide composition comprising Mo , Bi , Fe and Cu and having the general stoichiometry I{'br': None, 'sub': 12', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'l', 'm', 'x, 'MoBiF eCuCoNiWGHLMO\u2003\u2003(I)'}wherein:G=at least one element selected from the group consisting of K, Na, Rb and Cs,H=at least one element selected from the group consisting of Ba, Ca, Cr, Ce, La, Mg, Mn, Pb, Sn, Sr and Zn,L=at least one element selected from the group consisting of B, Nb, P, Sb, Ta, Te, Ti, Y and Zr,M=at least one element selected from the group consisting of Al and Si,a=0.2 to 2.5,b=0.5 to 4,c=0.05 to 0.55,d+e=4 to 11,f=0 to 1.2,g=0.03 to 0.5,h=0 to 20,l=0 to 10,m=0 to 800, [{'br': None, 'i': d+e+', 'b+h, '12/(1.5* )=0.8 to 2, and'}, {'br': None, 'i': 'a*c=', '0.01 to 1.5.'}], 'x=a number which is determined by the valency and frequency of the elements in I other than oxygen,'}2. The multimetal oxide composition according to claim 1 , wherein c=0.05 to 0.5.3. The multimetal oxide composition according to claim 1 , wherein c=0.05 to 0.45.4. The multimetal oxide composition according to claim 1 , wherein c=0.05 to 0.4.5. The multimetal oxide composition according to claim 1 , wherein c=0.05 to 0.35.6. The multimetal oxide composition according to claim 1 , wherein c=0.1 to 0.3.7. An eggshell catalyst claim 1 , comprising a shaped support body and an eggshell of at least one multimetal oxide composition according to claim 1 , present on an outer surface of the shaped support body.8. A shaped unsupported catalyst body claim 1 , the active composition of which is at least one multimetal oxide composition according to .9. The unsupported catalyst according to claim 8 , having the geometry of a ring having a wall thickness of 1 to 3 mm claim 8 , a length of 2 to 10 mm and an external diameter of 2 to 10 mm.10. A process for producing the multimetal ...

PROCESS FOR PRODUCING UNSATURATED NITRILE

A process for producing unsaturated nitrile, using a fluidized bed reactor having an internal space having a catalyst capable of being fluidized therein, a feed opening to feed a starting material gas comprising hydrocarbon to the internal space, and a discharge port to discharge a reaction product gas from the internal space, the process comprising a reaction step of subjecting the hydrocarbon to a vapor phase catalytic ammoxidation reaction in the presence of the catalyst in the internal space to produce the corresponding unsaturated nitrile, wherein when in the internal space, a space where an existing amount of the catalyst per unit volume is 150 kg/mor more is defined as a dense zone and a space where an existing amount of the catalyst per unit volume is less than 150 kg/mis defined as a sparse zone in the reaction step, a gas residence time in the sparse zone is 5 to 50 sec. 1. A process for producing unsaturated nitrile , using a fluidized bed reactor having an internal space comprising a catalyst capable of being fluidized therein; a feed opening to feed a starting material gas comprising hydrocarbon to the internal space; and a discharge port to discharge a reaction product gas from the internal space , the process comprising a reaction step of subjecting the hydrocarbon to a vapor phase catalytic ammoxidation reaction in the presence of the catalyst in the internal space to produce the corresponding unsaturated nitrile , wherein{'sup': 3', '3, 'when in the internal space, a space where an existing amount of the catalyst per unit volume is 150 kg/mor more is defined as a dense zone and a space where an existing amount of the catalyst per unit volume is less than 150 kg/mis defined as a sparse zone in the reaction step, a gas residence time in the sparse zone is 5 to 50 sec.'}2. The process for producing the unsaturated nitrile according to claim 1 , wherein a superficial gas velocity in the sparse zone is less than 1 m/s in the reaction step.3. The process ...

BISMUTH MOLYBDATE-BASED CATALYST HAVING ZEOLITE COATING LAYER, METHOD OF PREPARING THE SAME, AND METHOD OF PREPARING 1,3-BUTADIENE USING THE SAME

The present invention relates to a bismuth molybdate-based composite oxide catalyst having a microporous zeolite coating layer on the surface thereof and thus having high selectivity for 1,3-butadiene, a method of preparing the same, and a method of preparing 1,3-butadiene using the same. The catalyst has a microporous zeolite coating layer, and thus enables only gaseous products (light) to selectively pass through the zeolite coating layer, improving selectivity for 1,3-butadiene. 1. A bismuth molybdate-based composite oxide catalyst for preparing 1 ,3-butadiene , comprising:a bismuth molybdate-based composite oxide expressed by Formula 1 below; and {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'y, 'MoBiFeCoEO\u2003\u2003[Formula 1]'}, 'a zeolite coating layer having micropores and formed on the surface of the bismuth molybdate-based composite oxidewhere, E is at least one selected from the group consisting of nickel, sodium, potassium, rubidium, and cesium;the a, b, c, d and e each is 0.001 to 1; andthe y is a value determined to adjust a valence by other element.2. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the E is at least one selected from the group consisting of cesium and potassium.3. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the zeolite is silicon-based zeolite.4. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the micropores have a diameter of 0.2 to 1.5 nm.5. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the zeolite coating layer has a thickness of 50 to 1 claim 1 ,000 nm.6. The bismuth molybdate-based composite oxide catalyst according to claim 1 , wherein the catalyst is in the form of a pellet.7. A method of preparing a bismuth molybdate-based composite oxide catalyst for preparing 1 claim 1 ,3-butadiene claim 1 , the catalyst including a zeolite coating layer having micropores on the surface thereof ...

PREPARATION OF BUTADIENE BY OXIDATIVE DEHYDROGENATION OF N-BUTENE AFTER PRECEDING ISOMERIZATION

The invention relates to a process for preparing 1,3-butadiene by heterogeneously catalysed oxidative dehydrogenation of n-butene, in which a butene mixture comprising at least 2-butene is provided. The problem that it addresses is that of specifying a process for economically viable preparation of 1,3-butadiene on the industrial scale, which is provided with a butene mixture as raw material, wherein the 1-butene content is comparatively low compared to the 2-butene content thereof, and in which the ratio of 1-butene to 2-butene is subject to variation. This problem is solved by a two-stage process in which, in a first stage, the butene mixture provided is subjected to a heterogeneously catalysed isomerization to obtain an at least partly isomerized butene mixture, and in which the at least partly isomerized butene mixture obtained in the first stage is then subjected, in a second stage, to oxidative dehydrogenation. The two-stage process leads to higher butadiene yields compared to the one-stage process. 1. Process for preparing 1 ,3-butadiene by heterogeneously catalysed oxidative dehydrogenation of n-butene , in which a butene mixture comprising at least 2-butene is provided ,characterized in thata) the butene mixture provided is subjected to a heterogeneously catalysed isomerization to obtain an at least partly isomerized butene mixture,b) and in that the at least partly isomerized butene mixture is then subjected to oxidative dehydrogenation.2. Process according to claim 1 ,characterized in thatthe isomerization is effected in such a way that 2-butene present in the butene mixture provided is isomerized to 1-butene, such that the 1-butene content in the at least partly isomerized butene mixture has increased compared to the butene mixture provided.3. Process according to claim 1 ,characterized in thatthe isomerization is effected in such a way that 1-butene present in the butene mixture provided is isomerized to 2-butene, such that the 1-butene content in the ...

Catalyst For Production Of Butadiene, Process For Producing The Catalyst, And Process For Producing Butadiene Using The Catalyst

A catalyst for producing butadiene using n-butene as a raw material, a process for producing the same and a process for producing butadiene using the catalyst are provided, and specifically, a catalyst for producing butadiene by gas-phase contact oxidative dehydrogenation of n-butene, which is capable of stably producing butadiene in a high yield from the beginning of the reaction, a process for producing the same and a process for producing butadiene, in which the catalyst is a shaped catalyst containing a complex metal oxide having molybdenum as an essential ingredient, wherein the pore volume of macropores is 80% or more, more preferably 90% or more, based on the total pore volume, are provided.

METHOD OF PREPARING BUTADIENE

The present invention relates to a method of preparing butadiene. More particularly, the present invention relates to a method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation, wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2. 1. A method of preparing butadiene by feeding butene and oxygen into a reactor containing a composite metal oxide catalyst and performing oxidative dehydrogenation , wherein a mole ratio of the oxygen to the butene is 1.8 to 2.2.2. The method according to claim 1 , wherein the butene is 1-butene.3. The method according to claim 1 , wherein claim 1 , in the oxidative dehydrogenation claim 1 , a gas hourly space velocity (GHSV) is 30 to 80 hBE.4. The method according to claim 1 , wherein the composite metal oxide catalyst comprises a composite metal oxide represented by Formula 1 below:{'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'y, 'MoBiFeCoEO\u2003\u2003[Formula 1]'}wherein E is at least one selected from the group consisting of nickel, sodium, potassium, rubidium, and cesium; when a is 12, each of b, c, d, and e is 0.1 to 10, 0.1 to 10, 1 to 20, 0 to 5; y is a value determined to adjust valence to other ingredients.5. The method according to claim 1 , wherein claim 1 , in the oxidative dehydrogenation claim 1 , at least one selected from the group consisting of steam claim 1 , carbon dioxide claim 1 , and nitrogen is further included.6. The method according to claim 5 , wherein claim 5 , in the reaction claim 5 , a mole ratio of butene:oxygen:steam:nitrogen is 1:1.8 to 2.2:1 to 12:10 to 307. The method according to claim 1 , wherein the reactor is a tubular reactor claim 1 , a tank reactor claim 1 , a fluidized bed reactor claim 1 , or a fixed bed reactor. This application claims the benefit of Korean Patent Application No. 10-2014-0181338 filed on 16 Dec. 2014 and Korean Patent Application No. 10-2015-0164750 filed on 24 Nov. ...

Method for Producing Butadiene

A method for producing butadiene comprises a step of obtaining a product gas containing butadiene, by feeding a raw-material gas containing straight-chain butene and an oxygen-containing gas containing molecular oxygen to a reactor and performing oxidative dehydrogenation reaction in the presence of a catalyst, wherein the catalyst comprises a composite oxide containing molybdenum and bismuth, and the concentration of hydrocarbons having 5 or more carbon atoms in the raw-material gas is 0.05 mol % to 7.0 mol %. 1. A method for producing butadiene , comprising:a step of obtaining a product gas containing butadiene, by feeding a raw-material gas containing straight-chain butene and an oxygen-containing gas containing molecular oxygen to a reactor and performing oxidative dehydrogenation reaction in the presence of a catalyst, wherein:the catalyst comprises a composite oxide containing molybdenum and bismuth; anda concentration of hydrocarbons having 5 or more carbon atoms in the raw-material gas is 0.05 mol % to 7:0 mol %.2. The method according to claim 1 , wherein the concentration of hydrocarbons having 5 or more carbon atoms in the raw-material gas is 0.2 mol % to 6.0 mol %.3. The method according to claim 1 , wherein the concentration of the straight-chain butene in the raw-material gas is 60 mol % or more. The present invention relates to a method for producing butadiene.Methods for producing butadiene by oxidative dehydrogenation reaction of straight-chain butene in the presence of a catalyst have been conventionally known (for example, Patent Literature 1 and Patent Literature 2).In a method for producing butadiene, for example, a mixture containing straight-chain butene and butanes obtained by removing butadiene from a C4 fraction such as a C4 fraction produced as by-product by naphtha cracking, or a C4 fraction produced as by-product by fluid catalytic cracking is used as a raw material.Furthermore, as a catalyst for such oxidative dehydrogenation reaction, ...

RING-SHAPED CATALYST FOR PREPARING ACROLEIN AND ACRYLIC ACID, AND USE THEREOF (As Amended)

The present invention relates to a catalyst for preparing acrolein and acrylic acid, and use of the same. The catalyst according to the present invention can be uniformly packed in the reactor and collapse of the catalyst can be minimized because it has excellent mechanical properties, and it can lower initial pressure of the reaction by securing stable pore spaces and can be stably used for a long period of time. In addition, the preparation method of acrolein and acrylic acid according to the present invention can provide more improved production efficiency by using the catalyst. 1. A ring catalyst for preparing acrolein and acrylic acid ,including a mixture of an catalytic active ingredient including at least molybdenum (Mo) and bismuth (Bi), and an inorganic fiber, andhaving a ring shape, and {'br': None, 'i': L', 'D', '−D, 'sub': f', 'e', 'i, '0.1≦[2/()]<0.2\u2003\u2003[Relational Equation 1]'}, 'satisfying the following Relational Equation 1{'sub': f', 'e', 'i, 'wherein, in said Relational Equation 1, Lis the number average length of the inorganic fiber, Dis the external diameter of the ring catalyst, and Dis the internal diameter of the ring catalyst.'}2. The ring catalyst according to claim 1 , satisfying the following Relational Equation 2:{'br': None, 'i': L', '/D, 'sub': c', 'e, '0.2≦≦1.5\u2003\u2003[Relational Equation 2]'}{'sub': c', 'e, 'wherein, in said Relational Equation 2, Lis the longitudinal length of the ring catalyst, and Dis the external diameter of the ring catalyst.'}3. The ring catalyst according to claim 2 , wherein the ring catalyst has at least two shapes having different L/D.4. The ring catalyst according to claim 3 , wherein the ring catalyst includes 2 kinds or more of catalysts of the first type having L/Dof 0.2 to 1 and the second type having L/Dof 0.6 to 1.5.5. The ring catalyst according to claim 1 , wherein the catalytic active ingredient is represented by the following Chemical Formula 1:{'br': None, 'sub': a', 'b', 'c', 'd', 'e ...

METHOD OF PREPARING MULTICOMPONENT COMPOSITE METAL OXIDE CATALYST

Provided are a method of preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst, and a multicomponent bismuth-molybdenum composite metal oxide catalyst prepared thereby. According to the preparation method, since the almost same structure as that of a typical quaternary bismuth-molybdenum catalyst may be obtained by performing two-step co-precipitation, i.e., primary and secondary co-precipitation, of metal components constituting the catalyst, the reduction of catalytic activity due to the deformation of the structure of the catalyst may be suppressed. Also, since the multicomponent bismuth-molybdenum composite metal oxide catalyst may adjust the number of lattice oxygens consumed during a reaction to increase the catalytic activity, the multicomponent bismuth-molybdenum composite metal oxide catalyst may reduce the formation of by-products and may improve the conversion rate of reactant and the yield of desired product in a catalytic reaction process using the above catalyst, particularly, a catalytic reaction process under a relatively low temperature condition. 1. A method of preparing a multicomponent bismuth-molybdenum composite metal oxide catalyst represented by Formula 1 , the method comprising steps of:(1) preparing a first solution by mixing a divalent or trivalent cationic metal precursor solution, a monovalent cationic metal precursor solution, and a bismuth precursor solution;(2) preparing a second solution by dropwise adding the first solution to a molybdenum precursor solution and performing primary co-precipitation;(3) preparing a fourth solution by dropwise adding a third solution including a tetravalent cationic metal precursor during an aging process of the second solution and performing secondary co-precipitation; and {'br': None, 'sub': a', 'b', 'c', 'd', 'e', 'f, '[MoBiCDEO]\u2003\u2003[Formula 1]'}, '(4) sintering after drying the fourth solutionwherein C represents a divalent or trivalent cationic metal element,D ...

OXIDATION CATALYST FOR PRODUCTION OF BUTADIENE AND METHOD OF PREPARING THE SAME

Disclosed is a multi-component bismuth molybdate catalyst for production of butadiene which comprises bismuth, molybdenum and at least one metal having a monovalent, divalent or trivalent cation, and further comprises cesium and potassium and thus has advantages of improving conversion ratio, yield and selectivity of butadiene and of providing stability of process operation. 1. A multi-component bismuth molybdate catalyst for production of butadiene comprising:bismuth;molybdenum; andat least one metal having a monovalent, divalent or trivalent cation,wherein the multi-component bismuth molybdate catalyst further comprises cesium and potassium.2. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the catalyst is used for producing 1 claim 1 ,3-butadiene from a mixture containing butene.3. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the cesium and the potassium are present in a molar ratio (Cs:K) of 1:0.001 to 1:10.4. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the monovalent claim 1 , divalent or trivalent cationic metal comprises at least one selected from the group consisting of cobalt claim 1 , zinc claim 1 , magnesium claim 1 , manganese claim 1 , nickel claim 1 , copper claim 1 , iron claim 1 , sodium claim 1 , aluminum claim 1 , vanadium claim 1 , zirconium claim 1 , tungsten and silicon.5. The multi-component bismuth molybdate catalyst according to claim 4 , wherein the monovalent claim 4 , divalent or trivalent cationic metal comprises at least one selected from the group consisting of cobalt claim 4 , manganese claim 4 , nickel and iron.6. The multi-component bismuth molybdate catalyst according to claim 1 , wherein the catalyst comprises bismuth claim 1 , molybdenum claim 1 , iron claim 1 , cobalt claim 1 , potassium and cesium.7. The multi-component bismuth molybdate catalyst according to claim 6 , wherein a molar ratio of molybdenum to bismuth to iron to cobalt ...

Method for producing conjugated diene

The invention is concerned with a method for producing a conjugated diene including a reaction step of subjecting a raw material gas containing a monoolefin having a carbon atom number of 4 or more to an oxidative dehydrogenation reaction with a gas containing molecular oxygen in the presence of a catalyst, to obtain a reaction product gas containing a conjugated diene; and a cooling step of cooling the reaction product gas, wherein in the cooling step, a cooling agent is supplied into a cooling column and brought into contact with the reaction product gas; the cooling agent discharged from the cooling column is then cooled by a heat exchanger; a precipitate dissolved in the cooling agent is precipitated within the heat exchanger and recovered; and the cooling agent from which the precipitate has been recovered is circulated into the cooling column.

REMOVING AND CLEANING DEHYDROGENATION CATALYSTS

Oxidative dehydrogenation catalysts including mixed oxides of Mo, V, Nb, Te, and optionally a promoter may be dissolved in aqueous solutions of oxalic acid. This permits the removal of catalyst and catalyst residues from reactors for the oxidative dehydrogenation of paraffins and particularly ethane. 1. A method to remove from one or more vessels and associated piping a catalyst selected from the group consisting of: [{'br': None, 'sub': 0.9-1.1', '0.1-1', '0.1-0.2', '0.01-0.17', '0-2', 'd, 'MoVNbTeXO'}, X is selected from Pd, Sb Ba, Al, W, Ga, Bi, Sn, Cu, Ti, Fe, Co, Ni, Cr, Zr, Pt, and Ca,', 'and d is a number to satisfy the valence of the catalyst; and, 'wherein], 'i) catalysts comprising'} [{'br': None, 'sub': a', 'b', 'c', 'e', 'd, 'MoVNbTeO'}, a is from 0.75 to 1.25;', 'b is from 0.1 to 0.5;', 'c is from 0 to 0.5;', 'e is from 0 to 0.35; and', 'd is a number to satisfy the valence state of the mixed oxide catalyst, 'wherein], 'ii) catalysts of the formula'}wherein the catalyst is optionally on an alumina support;the method comprising contacting the catalyst with from 10 to 100 ml of a not less than 0.5 molar solution of oxalic acid per 1 to 5 g of catalyst at a temperature from 20° C. to 100° C. for a period of time of not less than 1 hour.2. The method according to claim 1 , wherein the method further comprises using agitation including cyclic pumping of the solution through a reactor tube.3. The method according to claim 2 , wherein the catalyst and optional support forms fouling on the piping associated with the reactor.4. The method according to claim 3 , wherein the piping is steel or stainless steel.5. The method according to claim 4 , the catalyst is a bed in one or more reactors.6. The method according to claim 4 , wherein the catalyst is supported on alumina (Al(O)OH).7. The method according to claim 1 , wherein at least one valuable metal selected from Pd claim 1 , Pt and Au is separated from the solution of catalyst and optional support by one or ...

Patent DE3300044C2

Catalysts preparation process based on molybden and/or tungsten oxides and oxides of other metals

Method for producing catalyst and method for producing acrylonitrile

A method for producing a catalyst according to the present invention includes: a preparation step of preparing a precursor slurry comprising molybdenum, bismuth, iron, silica, and a carboxylic acid; a drying step of spray-drying the precursor slurry and thereby obtaining a dried particle; and a calcination step of calcining the dried particle, wherein the preparation step comprises: a step (I) of mixing a starting material for silica with the carboxylic acid and thereby preparing a silica-carboxylic acid mixed liquid; and a step (II) of mixing the silica-carboxylic acid mixed liquid, molybdenum, bismuth, and iron.

Patent JPS6117546B2

Method for the catalytic gas-phase oxidation of propene into acrolein

IN A PROCESS FOR THE CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACROLEIN, THE REACTION GAS STARTING MIXTURE IS PASSED WITH A PROPENE LOADING OF > 160 1(S.T.P.)/1.H OVER A FIXED-BED CATALYST WHICH IS HOUSED IN TWO SPATIALLY SUCCESSIVE REACTION ZONES A, B, THE REACTION ZONE B BEING KEPT AT A HIGHER TEMPERATURE THAN THE REACTION ZONE A.

Heterogeneously catalyzed partial gas phase oxidation of propene to acrylic acid

Method for producing acrylonitrile, catalyst for use therein and the method for preparing the same

Method for producing acrylonitrile, catalyst for use therein and the method for preparing the same

OLEFIN OXIDATION CATALYST.

CATALYST FOR THE OXIDATION OF PROPYLENE

Patent JPS6236739B2

Patent US4438217B1

Catalyst for oxidation of propylene

An acrolein is prepd. by contact-oxidizing propylene in the vapor phase with air or molecular oxygen-contg. gas in the presence of a catalyst having a compsn. of formula MoaWbBicFedAeBfCgDhOx. The catalyst is moulded in the shape of a hollow cylinder [D=3.0-10.00mm; d=D(0.1-0.7); L=D(0.5-2.0) . In the formula, A is Ni or Co; B is alkali (earth) metal or Tl; C is P, As, B or Nb; D is Si, Al or Ti; a,b,c,d,e,f,g,h and x are each atom ratio of Mo, W, Bi, Fe, A, B, C, D and O; a is 2-12; b is 0-10; a+b is 12; C is 0.1-10.0; d is 0.1- 10.0; e is 2-20; f is 0.005-3.0; g is 0-4; h is 0.5-15; x is a number determined by the atomic valences of the individual elements.

Catalisador para oxidacao de propileno

Catalyst for oxidation of propylene

A B S T R A C T A catalyst for the oxidation of propylene, said catalyst having the composition represented by the follow-ing formula MoaWbBiFedAeBfCgDhOx wherein A represents at least one element selected from the group consisting of nickel and cobalt, B represents at least one element selected from the group consisting of alkali metals, alkaline earth metals and thallium, C represents at least one element selected from the group consisting of phosphorus, arsenic, boron and niobium, D represents at least one element selected from the group consisting of silicon, aluminum and titanium, a, b, c, d, e, f, g, h, and x respectively represent the atomic ratios of Mo, W, Bi, Fe, A, B, C, D, and O, a is from 2 to 12, b is from 0 to 10, the sum of a and b is 12, C is from 0.1 to 10.0, d is from 0.1 to 10.0, e is from 2 to 20, f is from 0.005 to 3.0, g is from 0 to 4, h is from 0.5 to 15 and x is a number determined by the atomic valences of the individual elements, and being molded in the shape of a hollow cylinder having an outside diameter of 3.0 to 10.0 mm, an inside diameter 0.1 to 0.7 times the outside diameter and a length 0.5 to 2.0 times the outside diameter.

POLYMETALLIC CATALYST BASED ON MOLYBDENE FOR THE OXIDATION OF PROPYLENE TO PROPENAL

Catalyst for use in the oxidation of propylene

触媒組成物

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

METHOD FOR PRODUCING METHACROLEIN AND METHACRYLIC ACID

Process for producing a catalyst consisting of a support body and a catalytically active oxide mass applied to the surface of the support body

Method for filling catalyst for synthesis of unsaturated aldehyde and unsaturated carboxylic acid

生产丙烯腈的催化剂

本发明是一种用于丙烯氨氧化法制造丙烯腈的流化床催化剂，是由二氧化硅载体和化学式如下的组合物组成：A a C c D d Na f Fe g Bi h M i Mo 12 O x 式中A为选自钾、铷、铯、钐、铊中的至少一种或它们的混合物；C为选自磷、砷、硼、锑、铬中的至少一种或它们的混合物；D为选自镍、钴或它们的混合物；M为选自钨、钒或它们的混合物。本发明催化剂特别适用于在较高的反应压力和高丙烯负荷条件下使用，仍可保持很高的丙烯腈单收，且具有氨转化率高的特点。特别适用于原有丙烯腈工厂提高丙烯腈生产能力需要，对新建工厂也可减少催化剂的投资费用，减轻三废污染。

Method for the catalytic gas-phase oxidation of propene into acrylic acid

A PROCESS FOR THE CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACRYLIC ACID, IN WHICH THE REACTION GAS STARTING MIXTURE IS OXIDIZED, WITH AN INCREASED PROPENE LOADING, IN A FIRST REACTION STAGE, OVER A FIRST FIXED-BED CATALYST AND THEN THE ACROLEIN-COATING PRODUCT GAS MIXTURE OF THE FIRST REACTION STAGE IS OXIDIZED, IN A SECOND REACTION STAGE, WITH AN INCREASED ACROLEIN LOADING, OVER A SECOND FIXED-BED CATALYST, THE CATALYST MOLDINGS IN BOTH REACTION STAGES HAVING AN ANNULAR GEMETRY.

Catalytic gas-phase oxidation of propene to acrylic acid

A PROCESS FOR THE CATALYTIC GAS-PHASE OXIDATION OF PROPENE TO ACRYLIC ACID, IN WHICH THE REACTION GAS STARTING MIXTURE IS OXIDIZED, WITH A HIGH PROPENE LOADING, IN A FIRST REACTION STAGE, OVER A FIRST FIXED-BED CATALYST WHICH IS HOUSED IN TWO SUCCESSIVE REACTION ZONES A, B, THE REACTION ZONE B BEING KEPT AT A HIGHER TEMPERATURE THAN THE REACTION ZONE A, AND THE ACROLEIN-CONTAINING PRODUCT GAS MIXTURE OF THE FIRST REACTION STAGE IS THEN OXIDIZED IN A SECOND REACTION STAGE, WITH A HIGH ACROLEIN LOADING, OVER A SECOND FIXED-BED CATALYST WHICH IS HOUSED IN TWO SUCCESSIVE REACTION ZONES C, D, THE REACTION ZONE D BEING KEPT AT A HIGHER TEMPERATURE THAN THE REACTION ZONE C.

Heterogeneous catalyzed gas phase production of (meth)acrolein and/or meth(acrylic acid) using mixed oxide catalyst formed into geometrically shaped article of specific geometric characteristics

A process for the heterogeneous catalyzed gas phase partial oxidation of a precursor compound of (meth)acrylic acid to (meth)acrolein and/or meth(acrylic acid) using a mixed oxide catalyst formed into a geometrically shaped article of specific geometric characteristics. A process for the heterogeneous catalyzed gas phase partial oxidation of a precursor compound of (meth)acrylic acid to (meth)acrolein and/or meth(acrylic acid) in which a reaction mixture comprising the precursor compound, molecular oxygen and optionally an inert gas is fed at elevated temperature through a fixed catalyst bed containing a mixed oxide catalyst formed into a geometrically shaped article formed from a base shape that is processed to have at least one cavity such that the ratio of the volume of the geometric shape VK to the volume of the geometric base shape VG is less than or equal to 0.63 and the ratio of the outer surface of the geometric shape (OK) to its volume is at least 22 cm<-1>.

Mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins

A catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, contains oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals. The catalyst has a certain relative amount ratio of cesium to bismuth, a certain relative amount ratio of iron to bismuth and a certain relative amount ratio of bismuth, iron, cesium and certain other metals to molybdenum and, optionally, tungsten. For a catalyst of the formula: Mo 12 Bi a W b Fe c Co d Ni e Sb f Cs g Mg h Zn i P j O x wherein a is 0.1 to 1.5, b is 0 to 4, c is 0.2 to 5.0, d is 0 to 9, e is 0 to 9, f is 0 to 2.0, g is from 0.4 to 1.5, h is 0 to 1.5, i is 0 to 2.0, j is 0 to 0.5 and x is determined by the valences of the other components, c:g=3.3-5.0, c:a=2.0-6.0 and (3a+3c+2d+2e+g+2h+2i)/(2×12+2b)=0.95-1.10.

Mixed metal oxide catalysts for the production of unsaturated aldehydes from olefins

A catalyst for production of unsaturated aldehydes, such as methacrolein, by gas phase catalytic oxidation of olefins, such as isobutylene, contains oxides of molybdenum, bismuth, iron, cesium and, optionally, other metals. The catalyst has a certain relative amount ratio of cesium to bismuth, a certain relative amount ratio of iron to bismuth and a certain relative amount ratio of bismuth, iron, cesium and certain other metals to molybdenum and, optionally, tungsten. For a catalyst of the formula: Mo 12 Bi a W b Fe c Co d Ni e Sb f Cs g Mg h Zn i P j O x wherein a is 0.1 to 1.5, b is 0 to 4, c is 0.2 to 5.0, d is 0 to 9, e is 0 to 9, f is 0 to 2.0, g is from 0.4 to 1.5, h is 0 to 1.5, i is 0 to 2.0, j is 0 to 0.5 and x is determined by the valences of the other components, c:g=3.3–5.0, c:a=2.0–6.0 and (3a+3c+2d+2e+g+2h+2i)/(2×12+2b)=0.95–1.10.

Production of ring-shaped solid mixed oxide catalysts, useful for the gas phase oxidation of propene, isobutene or tert-butanol to acrolein or methacrolein, comprises thermal treatment to give a specific lateral compressive strength

A process for the production of ring-shaped solid mixed oxide catalysts with a length of 2-11 mm, an outer diameter of 2-11 mm and a wall thickness of 0.75-1.75 mm, comprises production of a fine-particulate mixture from sources of the elementary constituents of the active mass, followed by forming to shape and thermal treatment at elevated temperature to form catalysts having a lateral compressive strength of 12-23 N. A process for the production of ring-shaped solid catalysts (I) having optionally curved faces, whose active mass is of formula (1) or (2), and having a geometry, without reference to any optional curvature of the faces, with a length of 2-11 mm, an outer diameter of 2-11 mm and a wall thickness of 0.75-1.75 mm, comprises production of a fine-particulate mixture from sources of the elementary constituents of the active mass, optionally following addition of forming and/or reinforcing agents, followed by forming of ring-shaped solid catalyst precursor molded articles having optionally curved faces and thermal treatment at elevated temperature to form the catalysts (I) having a lateral compressive strength of 12-23 N. Mo12BiaFebX1cX2dX3eX4fOn (1) (Y1a'Y2b'Ox')p(Y3c'Y4d'Y5e'Y6f'Y7g'Y2h'Oy')q (2) X1 = Ni and/or Co; X2 = Th, an alkali metal or alkaline earth metal; X3 = Zn, P, Ar, B, Sb, Sn, Ce, Pb and/or W; X4 = Si, Al, Ti and/or Zr; a = 0.2-5; b = 0.01-5; c = 0-10; d = 0-2; e = 0-8; f = 0-10; n = a number dependent upon the valency and frequency of non-oxygen elements; Y1 = Bi or Bi and Te, Sb, Sn and/or Cu; Y2 = Mo or Mo and W; Y3 = alkali metal; Th and/or Sm; Y4 = alkaline earth metal, Ni, Co, Cu, Mn, Zn, Sn, Cd and/or Hg; Y5 = Fe or Fe and V, Cr and/or Ce'; Y6 = P, Ar, B and/or Sb; Y7 = rare earth metal, Ti, Zr, Nb, Ta, Rh, Ru, Re, Ag, Au, Al, Ga, In, Si, Ge, Pb, Th and/or U; a' = 0.01-8; b' = 0.1-30; c' = 0-4; d' = 0-20; e' = greater than 0-20; f' = 0-6; g' = 0-15; h' = 8-16; ...

Long-term operation of heterogeneously catalyzed gas phase partial oxidation of propene to acrolein, involves conducting starting reaction gas mixture and gas mixture of specific composition through fixed catalyst bed at preset conditions

A starting reaction gas mixture which comprises propene, molecular oxygen and inert diluent gases is conducted through fixed catalyst bed. Subsequently, temperature of catalyst bed is increased over time. A gas mixture (G) of molecular oxygen, inert gas and optionally steam, is conducted through the bed at 250-550[deg]C, by long-term operation of heterogeneously catalyzed gas phase partial oxidation of propene to acrolein. A starting reaction gas mixture which comprises propene, molecular oxygen and at least one inert diluent gas is conducted through a fixed catalyst bed at elevated temperature, whose catalysts are such that their active composition is at least one multi metal oxide which contains element which is molybdenum and/or tungsten and at least one of element which is bismuth, tellurium, antimony, tin and copper, so as to counteract the deactivation of fixed catalyst bed. Subsequently, the temperature of the fixed catalyst bed is increased over time. The gas phase partial oxidation is interrupted at least once per calendar year. A gas mixture (G) consisting of molecular oxygen, inert gas and optionally steam, is conducted through the fixed catalyst bed at 250-550[deg]C, by long-term operation of heterogeneously catalyzed gas phase partial oxidation of propene to acrolein.

Preparing a catalyst molded body, useful e.g. to prepare catalyst for gas phase partial oxidation of an organic compound, comprises molding a precursor mixture to a desired geometry, using graphite, and thermally treating the molded body

Preparation of a catalyst molded body whose active mass is a multi-element oxide, comprises molding a finely-divided precursor mixture to a desired geometry by adding a graphite having a specific surface of 0.5-5 m 2>/g and an average particle diameter (d 5 0) of 40-200 mu m; and thermally treating the obtained catalyst precursor molded body at increased temperature. An independent claim is included for the catalyst molded body, obtained from the above process.

一种合成甲基丙烯醛的催化剂及其制备方法

本发明公开了一种用于合成甲基丙烯醛的催化剂及其制备方法，以及将该催化剂应用于叔丁醇或异丁烯气相选择氧化合成甲基丙烯醛的方法。本发明提供的催化剂是由活性组分和载体组成的混合物，活性组分是一种含Mo、Bi、Fe、Co等组分的复合氧化物，载体是石墨、硼、硅或锗粉中的至少一种。用此方法制备的催化剂不但催化活性和选择性高，而且可以使反应的热点得到有效的抑制，从而提高催化剂的使用寿命。

Producing a ring like oxidic mold, useful e.g. in partial gas phase oxidation of e.g. an organic compound, comprising mechanical packing of a powdery material which is brought into the fill space of a die made of a metal compound

Producing a ring like oxidic mold, comprising mechanical packing of a powdery material which is brought into the fill space of a die made out of components that contain at least one metal compound, which is convertible into a metal oxide through a thermal treatment at >= 100[deg] C or at least comprises one metal oxide, or at least one metal oxide and at least one such metal compound. Producing a ring like oxidic mold, comprising mechanical packing of a powdery material which is brought into the fill space of a die made out of components that contain at least one metal compound, which is convertible into a metal oxide through a thermal treatment at >= 100[deg] C or at least comprises one metal oxide, or at least one metal oxide and at least one such metal compound, to form a ring like precursor mold, in which the fill space is present in a die bore which passes through the die material with a vertical axis of drill B from top to bottom and through the inner wall of the die bore, the upper front surface of lower stamp which has been introduced from below movable up and down along the axis of drill B in the die bore, on which the powdery material which has been introduced into the fill space lies, the length of the axis of drill B in an axial initial distance A above the upper front surfaces of the lower stamp present lower front surfaces movable up and down along the axis of drill B introduced upper stamp, whose lower front surfaces moves in the powdery material introduced in the fill space, and the coat surface is limited by a guided tool sprig MF which is guided from the geometrical middle of the upper front surface of the lower stamp outwardly along the axis of drill which reaches up to the geometrical middle of the lower front surface of the upper stamp, so that the axial initial distance A of both the front surfaces is limited for the packing along the axis of drill B to a pre-determined axial end distance E that one can sink the lower stamp and such that ...

THE COMPLEX OXIDE CATALYST OF Bi/Mo/Fe FOR THE OXIDATIVE DEHYDROGENATION OF 1-BUTENE TO 1,3-BUTADIENE AND PROCESS THEREOF

본 발명은 비스무스 몰리브덴 철 복합 산화물 촉매 및 이를 이용한 1-부텐의 산화/탈수소화 반응 촉매에 관한 것으로 기존의 비스무스 몰리브덴 촉매에 비해, 철의 첨가로 인해 열적, 기계적으로 안정성이 우수하며, 전환율과 1,3-부타디엔의 선택도가 높고, 활성 저하가 느린 촉매에 관한 것이다. The present invention relates to a bismuth molybdenum iron composite oxide catalyst and a catalyst for oxidizing / dehydrogenation of 1-butene using the same, compared to the conventional bismuth molybdenum catalyst, due to the addition of iron, thermal and mechanical stability is excellent, and the conversion rate is 1 The present invention relates to a catalyst having high selectivity of, 3-butadiene and a slow activity degradation. 1-부텐, 1,3-부타디엔, 산화/탈수소화 반응, 비스무스, 몰리브덴, 철, 촉매 1-butene, 1,3-butadiene, oxidation / dehydrogenation reaction, bismuth, molybdenum, iron, catalyst

Catalyst and process for the oxidative dehydrogenation of N-butenes to butadiene

The invention relates to a catalyst which comprises a catalytically active multimetal oxide which comprises molybdenum and at least one further metal has the general formula (I) Mo 12 Bi a Mn b Co c Fe d X 1 e X 2 f O x   (I), where the variables have the following meanings: X 1 =Si and/or Al; X 2 =Li, Na, K, Cs and/or Rb; a=0.2 to 1; b=0 to 2; c=2 to 10; d=0.5 to 10; e=0 to 10; f=0 to 0.5; and x=is a number determined by the valence and abundance of the elements other than oxygen in (I).

Mechanically stable hollow-cylindrical moulded catalyst body for the gas phase oxidation of an alkene in order to obtain an unsaturated aldehyde and/or an unsaturated carboxylic acid

The invention relates to a hollow-cylindrical moulded catalyst body for the gas phase oxidation of an alkene in order to obtain an α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid, comprising a compacted multi-metal oxide and having an outer diameter AD, an inner diameter ID and a height H, where AD is selected in the range of 3.5 to 4.5 mm, the ratio of q = ID/AD is selected in the range of 0.4 to 0.55, and the ratio of p = H/AD is selected in the range of 0.5 to 1. The moulded catalyst body is mechanically stable and catalyses the partial oxidation of an alkene so as to produce products of value with high selectivity. It guarantees a sufficiently high catalyst mass density for the pelletised catalyst material, as well as a good degree of long-term stability at an acceptable level of pressure loss.

Process for preparing an unsaturated aldehyde and/or an unsaturated carboxylic acid

An α,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid are prepared by gas phase oxidation of an alkene with molecular oxygen over a fixed catalyst bed comprising a bed of hollow cylindrical shaped catalyst bodies having a multimetal oxide active composition. The fixed catalyst bed comprises at least three successive reaction zones; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor outlet; the highest local temperature in the fixed catalyst bed does not occur in the reaction zone closest to the reactor inlet; and the value WT = (ED-ID)/2 in the reaction zone in which the highest local temperature in the fixed catalyst bed occurs is lower than in the other reaction zones, in which ED is the external diameter and ID is the internal diameter of the shaped catalyst body. The yield of the products of value is enhanced in this way.

A process for the continuous production of either acrolein or acrylic acid as the target product from propene

A process for the continuous production of either acrolein or acrylic acid as the target product from propene comprising a catalyzed gas phase partial oxidation of propene to yield a product gas containing the target product, transferring the target product in a separating zone from the product gas into the liquid phase and conducting out of the separating zone a stream of residual gas the major portion of which is returned into the partial oxidation and the remaining portion of said stream is purged from the process as off-gas from which synthesis gas can be produced or which can be added to synthesis gas produced otherwise.

Catalyseur d'oxydation et son utilisation (

Process for production of acrolein

For production of acrolein by gas-phase catalytic oxidation of propylene with molecular oxygen, there is used a catalyst containing molybdenum, bismuth, cobalt, nickel, iron, tin, silicon, and a particular borate in a prescribed proportion. Sodium or manganese is employed for formation of the desired borate. For preparation of the catalyst, the borate of each of the metals is preferably supplied in the combined form of a sodium or manganese salt of various boric acids, such as borax, although it may be supplied separately as a boric acid and a decomposable compound of each metal.

Catalyst for the production of acrolein and acrylic acid

A PROCESS FOR PRODUCING ACROLEIN WHICH COMPRISES CATALYTIC OXIDIZING PROPYLENE IN THE VAPOR PHASE WITH OXYGEN AND STEAM IN THE PRESENCE OF NOVEL CATALYST, HAVING SUPERIOR NATURE IN ACTIVITY, AND COMPOSED OF OXIDES OF MO, CO, FE, BI, AND SN WITH OR WITHOUT ONE OR MORE OF AL, NW, W, CR, IN, AND NB, IS DISCLOSED.

Catalyst, process for its preparation and its use for the preparation of α, ßunsaturated aldehydes

Patent JPS584694B2

Patent JPS6338331B2

METHOD FOR PRODUCING SHELL CATALYSTS

METHOD FOR THE PRODUCTION OF 3 TO 4 C-ATOMES CONTAINING ALPHA, BETA -OLEFINICALLY UNSATURATED ALDEHYDES

Catalyst for the conversion of unsaturated hydrocarbons into diolefins or unsaturated aldehydes and nitriles, and process for preparing the same

The catalyst comprises one or more molybdates of trivalent metals chosen from Fe, Al, Ce and Cr and/or molybdates of bivalent metals chosen from alpha manganese molybdate, beta cobalt molybdate, beta nickel molybdate and the molybdates of Zn, Mg and Ca, and one or more promoter elements chosen from Se, Te, As, Sb, V, Nb, Sn, Pb and Tl homogeneously distributed within the crystalline structure of said molybdates with distortion thereof without creating new crystalline phases.

MOLYBDENE-BASED POLYMETALLIC CATALYST FOR THE OXIDATION OF PROPYLENE IN PROPENAL

CATALYSEUR POUR L'OXYDATION DU PROPYLENE. SA COMPOSITION EST REPRESENTEE PAR LA FORMULE:MOWBIFEABCDODANS LAQUELLE: AREPRESENTE LE NICKEL OU LE COBALT OU LES DEUX A LA FOIS, BUN OU PLUSIEURS ELEMENTS CHOISIS PARMI LES METAUX ALCALINS ET ALCALINOTERREUX ET LE THALLIUM, CUN OU PLUSIEURS ELEMENTS CHOISIS PARMI LE PHOSPHORE, L'ARSENIC, LE BORE ET LE NIOBIUM, DUN OU PLUSIEURS ELEMENTS CHOISIS PARMI LE SILICIUM, L'ALUMINIUM ET LE TITANE, ET A, B, C, D, E, F, G, H, ET X SONT RESPECTIVEMENT LES PROPORTIONS ATOMIQUES DE MO, W, BI, FE, A, B, C, D ET O, ET IL EST MOULE A LA FORME D'UN CYLINDRE CREUX AYANT UN DIAMETRE EXTERIEUR DE 3,0 A 10,0MM, UN DIAMETRE INTERIEUR DE 0, 1 A 0,7 FOIS LE DIAMETRE EXTERIEUR ET UNE LONGUEUR QUI EST DE 0,5 A 2,0 FOIS LE DIAMETRE EXTERIEUR. CATALYST FOR THE OXIDATION OF PROPYLENE. ITS COMPOSITION IS REPRESENTED BY THE FORMULA: MOWBIFEABCDO IN WHICH: AREPRESENTS NICKEL OR COBALT OR BOTH AT A TIME, BUN OR SEVERAL ELEMENTS CHOSEN FROM ALKALINE AND ALKALINOTERROUS METALS AND THALLIUM, CUN OR SEVERAL ELEMENTS, BUN OR SEVERAL ELEMENTS CHOSEN FROM ALKALINE AND ALKALINOTERROUS METALS AND THALLIUM, CUN OR SEVERAL ELEMENTS ARSENIC, BORON AND NIOBIUM, ONE OR MORE ELEMENTS CHOSEN FROM SILICON, ALUMINUM AND TITANIUM, AND A, B, C, D, E, F, G, H, AND X ARE RESPECTIVELY THE ATOMIC PROPORTIONS OF MO , W, BI, FE, A, B, C, D AND O, AND IT IS MOLDED IN THE FORM OF A HOLLOW CYLINDER HAVING AN OUTSIDE DIAMETER 3.0-10.0MM, AN INSIDE DIAMETER 0.1A 0.7 TIMES THE OUTER DIAMETER AND A LENGTH WHICH IS 0.5 TO 2.0 TIMES THE OUTER DIAMETER.

プロピレン酸化用触媒

(57)【要約】本公報は電子出願前の出願データであるた め要約のデータは記録されません。

Catalyst

Catalyst for oxidation of propylene

A catalyst for the oxidation of propylene, said catalyst having the composition represented by the following formula Mo.sub.a W.sub.b Bi.sub.c Fe.sub.d A.sub.e B.sub.f C.sub.g D.sub.h O.sub.x wherein A represents at least one element selected from the group consisting of nickel and cobalt, B represents at least one element selected from the group consisting of alkali metals, alkaline earth metals and thallium, C represents at least one element selected from the group consisting of phosphorus, arsenic, boron and niobium, D represents at least one element selected from the group consisting of silicon, aluminum and titanium, a, b, c, d, e, f, g, h, and x respectively represent the atomic ratios of Mo, W, Bi, Fe, A, B, C, D, and O, a is from 2 to 12, b is from 0 to 10, the sum of a and b is 12, c is from 0.1 to 10.0, d is from 0.1 to 10.0, e is from 2 to 20, f is from 0.005 to 3.0, g is from 0 to 4, h is from 0.5 to 15 and x is a number determined by the atomic valences of the individual elements, and being molded in the shape of a hollow cylinder having an outside diameter of 3.0 to 10.0 mm, an inside diameter 0.1 to 0.7 times the outside diameter and a length 0.5 to 2.0 times the outside diameter.

Catalyst for use in the oxidation of propylene

Method for producing an annular shell catalyst and use thereof for producing acrolein

Werkwijze voor het bereiden van een katalysator, alsmede een werkwijze voor het bereiden van isopreen.

Multimetal oxide materials