Catalytic system and process for dehydrogenating ethylbenzene to styrene

Catalytic system for dehydrogenating ethylbenzene to styrene, containing chromium oxide, tin oxide, at least one oxide of an alkaline metal (M) and an alumina carrier, in delta or theta phase or in a mixture of delta+theta or theta+alpha or delta+theta+alpha phases, modified with silica, and characterized in that:the chromium, expressed as Cr2O3, is in a quantity of between 6 and 30% by weight;the tin, expressed as SnO, is in a quantity of between 0.1 and 3.5% by weight;the alkaline metal, expressed as M2O, is in a quantity of between 0.4 and 3% by weight;the silica is in a quantity of between 0.08 and 3% by weight, the complement to 100 being alumina.

CATALYTIC COMPOSITION AND PROCESS FOR THE DEHYDROGENATION OF BUTENES OR MIXTURES OF BUTANES AND BUTENES TO GIVE 1,3-BUTADIENE

The present invention relates to a catalytic composition which comprises microspheroidal alumina and an active component containing a mixture comprising Gallium and/or Gallium oxides, Tin and/or Tin oxides, a quantity ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and oxides of alkaline and/or alkaline earth metals.

Process for the dehydrogenation of ethylbenzene to styrene

A process is described for the dehydrogenation of ethylbenzene to styrene in a fluid-bed reactor-regenerator system, which uses a catalyst based on iron oxide supported on a modified alumina and promoted with further metal oxides.

Catalytic composition for the dehydrogenation of alkylaromatic hydrocarbons

Process for the catalytic dehydrogenation of alkylaromatic hydrocarbons optionally mixed with ethane which comprises: A) dehydrogenating the hydrocarbon stream, optionally mixed with an inert gas, in a fluid bed reactor in the presence of a catalytic composition based on gallium and manganese supported on alumina modified with silica, at a temperature ranging from 400 to 700° C., at a total pressure ranging from 0.1 to 3 ata and with a GHSV (Gas Hourly Space Velocity) ranging from 50 to 10,000 h −1 ; and B) regenerating and heating the catalyst, by means of the catalytic oxidation of a fuel, in a fluid bed regenerator at a temperature higher than 400° C.

Catalytic composition for the dehydrogenation of alkylaromatic hydrocarbons

Process for the catalytic dehydrogenation of alkylaromatic hydrocarbons optionally mixed with ethane which comprises: A) dehydrogenating the hydrocarbon stream, optionally mixed with an inert gas, in a fluid bed reactor in the presence of a catalytic composition based on gallium and manganese supported on alumina modified with silica, at a temperature ranging from 400 to 700° C., at a total pressure ranging from 0.1 to 3 ata and with a GHSV (Gas Hourly Space Velocity) ranging from 50 to 10,000 h-1; and B) regenerating and heating the catalyst, by means of the catalytic oxidation of a fuel, in a fluid bed regenerator at a temperature higher than 400° C.

Process for obtaining light olefins by the dehydrogenation of the corresponding paraffins

A process for obtaining light olefins by the dehydrogenation of corresponding paraffins, by reacting the paraffins with a catalytic system containing chromium oxide, tin oxide, at least one alkali metal oxide, and an alumina-silica carrier, and then regenerating the catalytic system in a regenerator by burning coke deposited on its surface at a temperature higher than the average temperature of the reactor.

Process for preparing light olefins by dehydrogenation of the corresponding paraffins

A process for preparing light olefins from corresponding paraffins consists of reacting said paraffins in a reactor, operating at a temperature of between 450 and 800° C., a pressure of between 0.1 and 3 atm absolute and a GHSV of between 100 and 10000 h^-1, with a catalytic system containing gallium, platinum, possibly one or more alkaline or alkaline-earth metals, and a support consisting of alumina in delta or theta phase or in delta+theta or theta+alpha or delta+theta+alpha mixed phase, modified with silica, the gallium, expressed as Ga₂O₃, being in a quantity of between 0.1 and 33.6 wt %, the platinum being in a quantity of between 1 and 99 ppm, the alkaline or alkaline-earth metals, expressed as oxide, being in a quantity of between 0 and 5 wt %, and the silica being in a quantity of between 0.08 and 3 wt %, the rest to 100% being alumina, and regenerating said catalytic system in a regenerator by burning off the coke which has deposited on its surface ...

Catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene

The present invention relates to a catalytic composition which comprises microspheroidal alumina and an active component containing a mixture comprising Gallium and/or Gallium oxides, Tin and/or Tin oxides, a quantity ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and oxides of alkaline and/or alkaline earth metals.

Catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene

The present invention relates to a dehydrogenation process starting from reagents selected from single butenes, or mixtures thereof, or mixtures of butenes with butanes, to give 1-3 butadiene using catalytic composition of microspheroidal alumina and an active component containing a mixture comprising Gallium and/or Gallium oxides, Tin and/or Tin oxides, a quantity ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and oxides of alkaline and/or alkaline earth metals.

Process for preparing light olefins by dehydrogenation of the corresponding paraffins

A process for preparing light olefins from corresponding paraffins consists of reacting said paraffins in a reactor, operating at a temperature of between 450 and 800° C., a pressure of between 0.1 and 3 atm absolute and a GHSV of between 100 and 10000 h−1, with a catalytic system containing gallium, platinum, possibly one or more alkaline or alkaline-earth metals, and a support consisting of alumina in delta or theta phase or in delta+theta or theta+alpha or delta+theta+alpha mixed phase, modified with silica, the gallium, expressed as Ga2O3, being in a quantity of between 0.1 and 33.6 wt %, the platinum being in a quantity of between 1 and 99 ppm, the alkaline or alkaline-earth metals, expressed as oxide, being in a quantity of between 0 and 5 wt %, and the silica being in a quantity of between 0.08 and 3 wt %, the rest to 100% being alumina, and regenerating said catalytic system in a regenerator by burning off the coke which has deposited on its surface, without subsequently reducing ...

Catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene

The present invention relates to a dehydrogenation process starting from reagents selected from single butenes, or mixtures thereof, or mixtures of butenes with butanes, to give 1-3 butadiene using catalytic composition of microspheroidal alumina and an active component containing a mixture comprising Gallium and/or Gallium oxides, Tin and/or Tin oxides, a quantity ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and oxides of alkaline and/or alkaline earth metals.

Catalytic composition for the dehydrogenation of alkylaromatic hydrocarbons

Process for the catalytic dehydrogenation of alkylaromatic hydrocarbons optionally mixed with ethane which comprises: A) dehydrogenating the hydrocarbon stream, optionally mixed with an inert gas, in a fluid bed reactor in the pres~ence of a catalytic composition based on gallium and manganese supported on alumina modified with silica, at a temperature ranging from 400 to 700~C, at a total pressure ranging from 0.1 to 3 ata and with a GHSV (Gas Hourly Space Velocity) ranging from 50 to 10,000 h-1; and B) regenerating and heating the catalyst, by means of the catalytic oxidation of a fuel, in a fluid bed regenera~tor at a temperature higher than 400~C.

Process for dehydrogenating light paraffins in a fluidized bed reactor

A process for dehydrogenating light paraffins, in particular C 2 -C 5 , to obtain the corresponding light olefins, comprising reacting said paraffins with a catalytic system containing platinum, tin and an alumina support and possibly an element of the lanthanide group in a fluidized bed reactor, where the heat required for the reaction is provided by said catalytic system as sensible heat, operating at a temperature of between 500° and 700° C. and at a pressure of between 1 and 2 kg/cm 2 , and regenerating said catalytic system by burning the coke which has deposited on the surface of the catalytic system, said regeneration being conducted in air and/or oxygen, if necessary by increasing the temperature of the catalytic system to a suitable level, followed by reduction of said catalytic system with a reducing agent.

CATALYTIC MIXING OF DEHYDROGENERATION OF PARAFFINES.

Catalyst composition for the dehydrogenation of C2-C5 paraffins

PROCEDURE FOR OBTAINING LIGHT OLEFINS FROM THE DEHYDROGENATION OF THE CORRESPONDING PARAFFINS

Catalytic composition for the dehydrogenation of alkylaromatic hydrocarbons

Process for the catalytic dehydrogenation of alkylaromatic hydrocarbons optionally mixed with ethane which comprises: A) dehydrogenating the hydrocarbon stream, optionally mixed with an inert gas, in a fluid bed reactor in the pres­ence of a catalytic composition based on gallium and manganese supported on alumina modified with silica, at a temperature ranging from 400 to 700°C, at a total pressure ranging from 0.1 to 3 ata and with a GHSV (Gas Hourly Space Velocity) ranging from 50 to 10,000 h-1; and B) regenerating and heating the catalyst, by means of the catalytic oxidation of a fuel, in a fluid bed regenera­tor at a temperature higher than 400°C.

process for dehydrogenation of ethylbenzene to styrene.

PROCEDURE FOR THE DEHYDROGENATION OF LIGHT PARAFFIN IN A FLUID BED REACTOR

PROCEDURE TO OBTAIN LIGHT OLEFINS BY DEHYDROGENATION OF THE CORRESPONDING PARAFFINS

Process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene

The present invention relates to a catalytic composition which comprises microspheroidal alumina and an active component containing a mixture comprising Gallium and/or Gallium oxides, Tin and/or Tin oxides, a quantity ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and oxides of alkaline and/or alkaline earth metals.

catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to provide 1,3-butadiene

1/1 resumo “composição catalítica e processo para a desidrogenação de butenos ou misturas de butanos e butenos para fornecer 1,3butadieno” a presente invenção refere-se a uma composição catalítica que compreende alumina microesferoidal e um componente ativo contendo uma mistura compreendendo gálio e/ou óxidos de gálio, estanho e/ou óxidos de estanhos, uma quantidade variando de 1 ppm a 500 ppm com respeito ao peso total da composição catalítica de platina e/ou óxidos de platina, e óxidos de metais alcalino e/ou alcalino terroso.

Catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene

The present invention relates to a catalytic composition which comprises microspheroidal alumina and an active component containing a mixture comprising Gallium and/or Gallium oxides, Tin and/or Tin oxides, a quantity ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and oxides of alkaline and/or alkaline earth metals.

Process for dehydrogenation of ethylbenzene to styrene

Catalyst composition for the dehydrogenation of C2-C5 paraffins

The process for activating a catalytic composition for paraffin dehydrogenation containing gallium, alumina, possibly silica and/or one or more alkaline or alkaline-earth metals, comprises thermal activation in air followed by post-activation effected by the following stages: oxidation with air and/or oxygen or a mixture containing oxygen and inert gas; purging with inert gas; reduction with hydrogen or a mixture of hydrogen and an inert or reducing gas. The catalytic composition activated by said process contains gallium, alumina, silica and possibly one or more alkaline or alkaline-earth metals, the alumina being in δ or ϑ phase or in δ + ϑ or δ + ϑ + α phase mixture.

Process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene

CATALIC COMPOSITION FOR THE DEHYDROGENATION OF C2-C5 PARAFFINS

PROCEDURE FOR THE DEHYDROGENATION OF LIGHT PARAFFIN IN A FLUID BED REACTOR

Process for the dehydrogenation of ethylbenzene to styrene

A process is described for the dehydrogenation of ethylbenzene to styrene in a fluid-bed reactor-regenerator system, which uses a catalyst based on iron oxide supported on a modified alumina and promoted with further metal oxides.

Catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene.

La presente invención se relaciona con una composición catalítica la cual comprende alúmina microesferoide y un componente activo que contiene una mezcla que comprende galio y/u óxidos de galio, estaño y/u óxidos de estaño, una cantidad que tiene un intervalo de 1 ppm a 500 ppm con respecto al peso total de la composición catalítica de platino y/u óxidos de platino, y óxidos de metales alcalinos y/o alcalinotérreos.

PROCEDURE FOR THE DEHYDROGENATION OF ETHYLBENZENE TO STYRENE.

Process for the dehydrogenation of ethylbenzene to styrene

Catalytic dehydrogenation of C2-C5 paraffins.

Process for dehydrogenating light paraffins in a fluidized bed reactor

PROCESS FOR DEHYDROGENATING LIGHT PARAFFINS IN A FLUIDIZED BED REACTOR Abstract A process for dehydrogenating light paraffins, in particular C2-C5, to obtain the corresponding light olefins, comprising reacting said paraffins with a catalytic system containing platinum, tin and an alumina support and possibly an element of the lanthanide group in a fluidized bed reactor, where the heat required for the reaction is provided by said catalytic system as sensible heat, operating at a temperature of between 500 and 700°C and at a pressure of between 1 and 2 kg/cm2, and regenerating said catalytic system by burning the coke which has deposited on the surface of the catalytic system, said regeneration being conducted in air and/or oxygen, if necessary by increasing the temperature of the catalytic system to a suitable level, followed by reduction of said catalytic system with a reducing agent.

Catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to give 1,3-butadiene

PROCEDURE TO OBTAIN LIGHT OLEFINS FROM THE DEHYDROGENATION OF THE CORRESPONDING PARAFFINS

Il procedimento per ottenere olefine leggere dalle corrispondenti paraffine consiste nel far reagire in un reattore, operando ad una temperatura compresa fra 450 e 800° C, ad una pressione fra 0,1 e 3 Atm assolute e con una velocità spaziale GHSV fra 100 e 10000 h-1, dette paraffine con un sistema catalitico contenente gallio, platino, eventualmente uno o più metalli alcalini o alcalino terrosi, ed un supporto di allumina, in fase delta o teta oppure in miscela di fasi delta + teta o teta + alfa o delta + teta + alfa, modificata con silice.Essendo il gallio, espresso come Ga2O3, in quantità compresa fra lo 0,1 ed il 33,6% in peso, il platino in quantità compresa fra 1 e 99 ppm, i metalli alcalini o alcalino terrosi, espressi come ossido, in quantità compresa fra 0 e 5% in peso, la silice in quantità compresa fra 0,08 e il 3% in peso, essendo il resto a 100 allumina.E nel rigenerare detto sistema catalitico in un rigeneratore, bruciando il coke depositatosi sulla sua superficie, senza successivamente ridurlo. The procedure for obtaining light olefins from the corresponding paraffins consists in reacting in a reactor, operating at a temperature between 450 and 800 ° C, at a pressure between 0.1 and 3 absolute Atm and with a GHSV space velocity between 100 and 10000 h-1, called paraffins with a catalytic system containing gallium, platinum, possibly one or more alkaline or alkaline earth metals, and an alumina support, in the delta or theta phase or in a mixture of delta + theta or theta + alpha or delta phases + theta + alpha, modified with silica. Being gallium, expressed as Ga2O3, in an amount between 0.1 and 33.6% by weight, platinum in an amount between 1 and 99 ppm, alkaline or alkaline metals earthy, expressed as oxide, in an amount comprised between 0 and 5% by weight, silica in an amount comprised between 0.08 and 3% by weight, the remainder being 100 alumina. And in regenerating said catalytic system in a regenerator, by burning the coke deposited on its ...

Process for obtaining light olefins by the dehydrogenation of the corresponding paraffins

A process for obtaining light olefins by the dehydrogenation of the corresponding paraffins, consisting: a) in reacting in a reactor, operating at a temperature of between 450 and 800°C, at a pressure of between 0.1 and 3 Atm absolute and with a GHSV space velocity of between 100 and 10000 h-1, said paraffins with a catalytic system containing chromium oxide, tin oxide, at least one alkaline metal oxide (M) and an alumina carrier, in delta or theta phase or in mixed delta + theta or theta + alpha or delta + theta + alpha phases, modified with silica, in which: - the chromium, expressed as Cr2O3, is in a quantity of between 6 and 30 % by weight; - the tin, expressed as SnO, is in a quantity of between 0.1 and 3.5 % by weight; - the alkaline metal, expressed as M2O, is in a quantity of between 0.4 and 3 % by weight; - the silica is in a quantity of between 0.08 and 3 % by weight, the complement to 100 being alumina, b) in regenerating said catalytic system in a regenerator by burning the coke deposited on its surface operating at a temperature of more than 400°C.

catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to provide 1,3-butadiene

1/1 resumo “composição catalítica e processo para a desidrogenação de butenos ou misturas de butanos e butenos para fornecer 1,3butadieno” a presente invenção refere-se a uma composição catalítica que compreende alumina microesferoidal e um componente ativo contendo uma mistura compreendendo gálio e/ou óxidos de gálio, estanho e/ou óxidos de estanhos, uma quantidade variando de 1 ppm a 500 ppm com respeito ao peso total da composição catalítica de platina e/ou óxidos de platina, e óxidos de metais alcalino e/ou alcalino terroso. 1/1 abstract "catalytic composition and process for the dehydrogenation of butenes or mixtures of butanes and butenes to provide 1,3butadiene" the present invention relates to a catalytic composition comprising microspheroidal alumina and an active component containing a mixture comprising gallium and /or oxides of gallium, tin and/or oxides of tin, an amount ranging from 1 ppm to 500 ppm with respect to the total weight of the catalytic composition of platinum and/or platinum oxides, and alkali metal and/or alkaline earth oxides .

Catalytic composition for the dehydrogenation of alkylaromatic hydrocarbons

Process for the catalytic dehydrogenation of alkylaromatic hydrocarbons optionally mixed with ethane which comprises: A) dehydrogenating the hydrocarbon stream, optionally mixed with an inert gas, in a fluid bed reactor in the pres­ence of a catalytic composition based on gallium and manganese supported on alumina modified with silica, at a temperature ranging from 400 to 700°C, at a total pressure ranging from 0.1 to 3 ata and with a GHSV (Gas Hourly Space Velocity) ranging from 50 to 10,000 h-1; and B) regenerating and heating the catalyst, by means of the catalytic oxidation of a fuel, in a fluid bed regenera­tor at a temperature higher than 400°C.

Procedimento per la produzione di olefine leggere per deidrogenazionedelle corrispondenti paraffine

Procedimento per l'attivazione di precursori catalitici per la deidrogenazione di paraffine c2-c5- e composizione catalitica attivata con tale procedimento

Procedimento per la deidrogenazione di etilbenzene a stirene

Verfahren zur dehydrierung von ethylbenzol zu styrol

Procedimento per deidrogenare l'etilbenzene a stirene

Procedimento per ottenere olefine leggere dalla deidrogenerazione delle corrispondenti paraffine

Procedimento per la deidrogenazione di paraffine leggere in un reattore a letto fluido

Procedimento per la produzione di olefine leggere per deidrogenazione delle corrispondenti paraffine

Composizione catalicica per la deidrogenazione di paraffine c2-c5