Integrated Process for the Production of Vinyl Acetate from Acetic Acid Via Ethylene

This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual rector zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.

Ethanol Production from Acetic Acid Utilizing a Molybdenum Carbide Catalyst

A process for the selective and direct formation of ethanol from acetic acid comprising contacting a feed stream containing acetic acid and hydrogen in vapor form at an elevated temperature with a hydrogenation catalyst comprising molybdenum carbide and one or more promoter metals selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, potassium, tin and tungsten on a catalyst support 1. A process for selective and direct formation of ethanol from acetic acid comprising:contacting a feed stream comprising acetic acid and hydrogen in vapor form at an elevated temperature with a hydrogenation catalyst comprising molybdenum carbide and one or more promoter metals selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, potassium, tin and tungsten, on a catalyst support.2. The process of claim 1 , wherein the catalyst support is selected from the group consisting of silica claim 1 , silica/alumina claim 1 , calcium metasilicate claim 1 , pyrogenic silica claim 1 , high purity silica and mixtures thereof.3. The process of claim 1 , wherein the loading of molybdenum carbide is from 0.1 wt. % to 25 wt. %.4. The process of claim 1 , wherein the loading of promoter metal is from 0.1 wt. % to 20 wt. %.5. The process of claim 1 , wherein the promoter metal comprises copper.6. The process of claim 5 , wherein the loading of molybdenum carbide is from 0.5 to 10 wt. % and the loading of copper is from 0.1 to 5 wt. %.7. The process of claim 1 , wherein the promoter metal comprises palladium or platinum.8. The process of claim 7 , wherein the loading of molybdenum is from 0.5 to 10 wt. % and the loading of palladium is from 0.1 to 2.5 wt. %.9. The process of claim 1 , wherein the process yields an acetic acid conversion of at least 10%.10. The process of claim 1 , wherein the ...

Recovering Ethanol with Sidestreams to Regulate C3+ Alcohols Concentrations

This invention relates to a process for producing ethanol and recovering methyl iodide, the process comprising the steps of carbonylating methanol in a carbonylation system in the presence of a carbonylation catalyst under conditions effective to form acetic acid; hydrogenating the acetic acid in a hydrogenation system in the presence of a hydrogenation catalyst to form a crude ethanol product comprising ethanol and water; and separating the crude ethanol product to form an ethanol stream and a water stream.

Synthesis of Acetaldehyde from a Carbon Source

A process for the selective production of acetaldehyde by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form acetaldehyde is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and iron supported on silica selectively produces acetaldehyde in a vapor phase at a temperature of about 300° C.

INTEGRATED PROCESS FOR PRODUCING ETHANOL FROM METHANOL

Processes and systems for forming ethanol from methanol. The process involves carbonylating the methanol to form acetic acid and hydrogenating the acetic acid to form ethanol. In a first aspect, at least some hydrogen for the hydrogenating step is derived from a tail gas stream formed in the carbonylation step. In a second aspect, at least some carbon monoxide for the carbonylation step is derived from a vapor stream in the hydrogenation system. In a third aspect, a syngas stream is separated to form a hydrogen stream and a carbon monoxide stream, and the hydrogen stream is methanated to remove residual carbon monoxide prior to being introduced into the hydrogenation system. 1. A process for forming ethanol , comprising the steps of:(a) carbonylating methanol in the presence of a carbonylation catalyst in a carbonylation reactor to form acetic acid and a tail gas stream, wherein the tail gas stream comprises carbon monoxide and hydrogen;(b) separating hydrogen from the tail gas stream; and(c) hydrogenating the acetic acid with the separated hydrogen in the presence of a hydrogenation catalyst in a hydrogenation reactor to form a crude ethanol stream.2. The process of claim 1 , further comprising separating carbon monoxide from the tail gas stream and recycling the carbon monoxide to the carbonylation reactor.3. The process of claim 1 , wherein the separating comprises membrane separating.4. The process of claim 1 , wherein the separating forms a hydrogen stream comprising hydrogen and residual carbon monoxide claim 1 , the process further comprising the step of reacting the residual carbon monoxide with hydrogen in the presence of a catalyst to form a methanated stream comprising hydrogen and methane.5. The process of claim 4 , wherein the methanated stream comprises at least 85 vol. % hydrogen.6. The process of claim 4 , wherein the methanated stream comprises less than 2 vol. % carbon monoxide.7. The process of claim 1 , wherein the separating forms a hydrogen ...

INTEGRATED PROCESS FOR PRODUCING ETHANOL

Processes and systems for forming ethanol from methanol. The process involves carbonylating the methanol to form acetic acid and hydrogenating the acetic acid to form ethanol. In a first aspect, at least some hydrogen for the hydrogenating step is derived from a tail gas stream formed in the carbonylation step. In a second aspect, at least some carbon monoxide for the carbonylation step is derived from a vapor stream in the hydrogenation system. In a third aspect, a syngas stream is separated to form a hydrogen stream and a carbon monoxide stream, and the hydrogen stream is methanated to remove residual carbon monoxide prior to being introduced into the hydrogenation system. 1. A process for forming an alcohol , comprising:(a) separating a syngas stream comprising carbon monoxide and hydrogen into a hydrogen stream comprising hydrogen and residual carbon monoxide, and a carbon monoxide stream comprising carbon monoxide;(b) methanating at least a portion of the hydrogen stream to convert at least a portion of the residual carbon monoxide to methane and water and forming a methanated hydrogen stream; and(c) hydrogenating an alkanoic acid with hydrogen from the methanated hydrogen stream in the presence of a catalyst under conditions effective to form the alcohol.2. The process of claim 1 , wherein the alkanoic acid is acetic acid and the alcohol is ethanol.3. The process of claim 1 , further comprising carbonylating an alcohol having n carbon atoms with carbon monoxide from the carbon monoxide stream to form the alkanoic acid claim 1 , wherein the alkanoic acid and the alcohol formed in the hydrogenating step comprise n+1 carbon atoms.4. The process of claim 1 , wherein the separating comprises membrane separating.5. The process of claim 1 , wherein the methanated stream comprises at least 85 vol. % hydrogen.6. The process of claim 1 , wherein the methanated stream comprises less than 2 vol. % carbon monoxide.7. The process of claim 1 , wherein the methanol is derived ...

Integrated Acid and Alcohol Production Process

An integrated process for producing ethanol, comprising the step of reacting carbon monoxide with at least one reactant in a reactor containing a reaction medium to produce a liquid reaction product comprising acetic acid. The reaction medium comprises water, acetic acid, methyl acetate, a halogen promoter, and a first catalyst. The process further comprises the steps of directly feeding the liquid reaction product from the reactor to a distillation column and withdrawing from it an overhead stream comprising methyl acetate, and/or halogen promoter, a bottoms stream comprising a solution of the first catalyst, and a liquid acetic acid sidestream; and hydrogenating acetic acid of the liquid acetic acid sidestream in the presence of a second catalyst and under conditions effective to form a crude ethanol product comprising ethanol and water. No flashing vessel is used to purify the liquid reaction product. Ethanol is recovered from the crude ethanol product.

Integrated Acid and Alcohol Production Process Having Flashing To Recover Acid Production Catalyst

In one embodiment, the invention is to a process for producing ethanol, comprising the step of reacting carbon monoxide with at least one reactant in a reactor containing a reaction medium to produce a liquid reaction product comprising acetic acid. The process further comprises the step of separating the reaction product in a flasher into a liquid recycle stream and a vapor stream. The vapor stream is then distilled in a rectification tower and an overhead stream and an acetic acid stream are withdrawn therefrom, wherein the acetic acid is substantially free of halogen promoters. The process further comprises the step of hydrogenating acetic acid of the acetic acid stream in the presence of a second catalyst and under conditions effective to form a crude ethanol product comprising ethanol and water. Ethanol is recovered from the crude ethanol product.

Producing Ethanol Using Two Different Streams From Acetic Acid Carbonylation Process

This invention relates to processes for producing ethanol from at least two different streams obtained by carbonylating methanol. The process comprises the steps of reacting carbon monoxide with at least one reactant in a first reactor containing a reaction medium to produce a reaction solution comprising acetic acid, wherein the at least one reactant is selected from the group consisting of methanol, methyl acetate, methyl formate, dimethyl ether and mixtures thereof and wherein the reaction medium comprises water, acetic acid, methyl iodide, and a first catalyst, purifying the reaction solution to yield an acetic acid product stream and at least one derivative stream, introducing the acetic acid product stream and the at least one derivative stream into a second reactor in the presence of a second catalyst to form a crude ethanol product, and recovering ethanol from the crude ethanol product.

Integrated Process For Producing Ethanol

In one embodiment, the invention is to a process for producing ethanol, the process comprising the steps of carbonylating methanol in a carbonylation system in the presence of a carbonylation catalyst under conditions effective to form acetic acid; hydrogenating the acetic acid in a hydrogenation system in the presence of a hydrogenation catalyst to form a crude ethanol product comprising ethanol and water; separating the ethanol from the water to form an ethanol stream and a water stream; and directing at least a portion of the water stream to the carbonylation system, e.g., for use as an extractant in a permanganate reducing compound removal system. 1. A process for producing ethanol , the process comprising the steps of:carbonylating methanol in a carbonylation system in the presence of a carbonylation catalyst under conditions effective to form acetic acid;hydrogenating the acetic acid in a hydrogenation system in the presence of a hydrogenation catalyst to form a crude ethanol product comprising ethanol and water;separating the ethanol from the water to form an ethanol stream and a water stream; anddirecting at least a portion of the water stream to the carbonylation system.2. The process of claim 1 , wherein the water stream is used as an extractant in the carbonylation system.3. The process of claim 1 , wherein the carbonylation process forms a PRC stream comprising one or more PRC's and methyl iodide claim 1 , the process further comprising the step of:adding at least a portion of the water stream to the PRC stream to form an aqueous phase comprising the separated water and a majority of the one or more PRC's, and an organic phase comprising a majority of the methyl iodide.4. The process of claim 1 , wherein the water stream is essentially free of organic impurities other than acetic acid.5. The process of claim 1 , wherein the crude ethanol product comprises ethanol claim 1 , water claim 1 , and ethyl acetate.6. The process of claim 5 , wherein the crude ...

Process For Producing Ethanol From Impure Methanol

In a first embodiment, the present invention relates to a process for producing ethanol. The process comprises the step of contacting a carbon monoxide feed and an impure methanol feed in a reactor under conditions effective to produce a crude acetic acid product. The impure methanol feed comprises more than 0.15 wt. % of impurities. The process further comprises the step of separating the crude acetic acid product to form an intermediate acetic acid product and at least one derivative stream. The intermediate acetic acid product may comprise acetic acid and at least one of the impurities from the impure methanol feed. The process further comprises the step of hydrogenating at least a portion of the intermediate acetic acid product to produce a crude ethanol product. The hydrogenation is preferably conducted over a catalyst. 1. A process for producing ethanol , comprising the steps of: (i) a carbon monoxide feed; and', '(ii) an impure methanol feed comprising more than 0.15 wt. % of impurities;, '(a) contacting in a reactor under conditions effective to produce a crude acetic acid product(b) separating the crude acetic acid product to form an intermediate acetic acid product comprising acetic acid; and(c) hydrogenating at least a portion of the intermediate acetic acid product over a catalyst and under conditions effective to produce a crude ethanol product.2. The process of claim 1 , wherein the impure methanol feed comprises impurities selected from the group consisting of organic impurities claim 1 , chlorine-containing compounds claim 1 , sulfur-containing compounds claim 1 , and nitrogen-containing compounds.3. The process of claim 1 , wherein the impure methanol feed comprises impurities that are hydrocarbons having more than two carbon atoms and not being selected from the group consisting of methyl acetate claim 1 , dimethyl ether claim 1 , or methyl formate.4. The process of claim 1 , wherein the intermediate acetic acid product further comprises at least ...

ETHANOL PRODUCTION FROM ACETIC ACID UTILIZING A COBALT CATALYST

A process for the selective production of ethanol by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethanol is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over either cobalt and palladium supported on graphite or cobalt and platinum supported on silica selectively produces ethanol in a vapor phase at a temperature of about 250° C. 125-. (canceled)26. A hydrogenation catalyst for the formation of ethanol from acetic acid , the catalyst comprising from 0.1 to 20 wt. % cobalt and a second metal on a catalyst support , wherein the second metal is selected from the group consisting of platinum , palladium , rhodium , ruthenium , rhenium , iridium , chromium , copper , tin , molybdenum , tungsten , vanadium , and zinc.27. The catalyst of claim 26 , wherein the second metal is selected from the group consisting of platinum claim 26 , palladium and chromium.28. The catalyst of claim 26 , wherein the second metal is selected from the group consisting of ruthenium claim 26 , chromium claim 26 , or vanadium.29. The catalyst of claim 28 , wherein the second metal is present in an amount from 0.5 to 2 wt. %.30. The catalyst of claim 26 , wherein the catalyst may further comprise a third metal selected from the group consisting of rhodium claim 26 , iridium claim 26 , copper claim 26 , tin claim 26 , molybdenum and zinc claim 26 , provided that the third metal is different than the second metal.31. The catalyst of claim 26 , wherein the cobalt is present from 1 to 15 wt. %.32. The catalyst of claim 26 , wherein the second metal is present in an amount from 0.1 to 10 wt. %.33. The catalyst of claim 26 , wherein the catalyst support is selected from the group consisting of zeolite claim 26 , iron oxide claim 26 , silica claim 26 , alumina claim 26 , titania claim 26 , zirconia claim 26 , silica-alumina claim 26 , magnesium oxide claim 26 , calcium silicate claim 26 , carbon claim 26 , graphite ...

Processes for Making Ethanol From Acetic Acid

A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel. 145-. (canceled)46. A process for producing ethanol , comprising hydrogenating acetic acid in the presence of a catalyst comprising a first metal , a second metal , a silicaceous support , and at least one support modifier; wherein the first metal is selected from the group consisting of copper , iron , cobalt , nickel , ruthenium , rhodium , palladium , osmium , iridium , platinum , titanium , zinc , chromium , rhenium , molybdenum , and tungsten and wherein the second metal is selected from the group consisting of copper , molybdenum , tin , chromium , iron , cobalt , vanadium , tungsten , palladium , platinum , lanthanum , cerium , manganese , ruthenium , rhenium , gold , and nickel , provided that the second metal is different than the first metal.47. The process of claim 46 , wherein the first metal is present in an amount of from 0.1 to 25 wt. % claim 46 , based on the total weight of the catalyst.48. The process of claim 46 , wherein the second metal is present in an amount of from 0.1 to 10 wt. % claim 46 , based on the total weight of the catalyst.49. The process of claim 46 , wherein the at least one support modifier is selected from the group consisting of (i) alkaline earth metal oxides claim 46 , (ii) alkali metal oxides claim 46 , (iii) alkaline earth metal metasilicates claim 46 , (iv) alkali metal ...

Catalysts for making ethanol from acetic acid

Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Olefin Hydration For Hydrogenation Processes

Processes for contacting an olefin feed stream, preferably comprising ethylene, with at least one stream from an ethanol production process that comprises water. The hydration reaction produces ethanol to improve overall ethanol yields from the hydrogenation acetic acid and esters thereof. 1. A process for producing an alcohol , comprising:hydrogenating an acetic acid feed stream in the presence of a first catalyst in a first reaction zone to form a crude alcohol product;separating at least a portion of the crude alcohol product in one or more columns to produce an alcohol product stream and a dilute alcohol stream comprising water; andcontacting an olefin feed stream with at least a portion of the dilute alcohol stream in the presence of a second catalyst in a second reaction zone to form an alcohol corresponding to the olefin.2. The process of claim 1 , further comprising introducing the alcohol corresponding to the olefin into the one or more columns.3. The process of claim 1 , wherein the dilute alcohol stream comprises more water claim 1 , based on relative weight percent claim 1 , than the alcohol product stream.4. The process of claim 1 , wherein the olefin feed stream comprises one or more olefins selected from the group consisting of ethylene claim 1 , propylene claim 1 , but-1-ene claim 1 , pent-1-ene claim 1 , and hex-1-ene.5. The process of claim 1 , wherein the hydrogenation step and contacting step produce the same alcohol.6. The process of claim 1 , wherein at least 5% of the water from the dilute alcohol stream is converted to the alcohol corresponding to the olefin.7. The process of claim 1 , wherein the molar ratio of water to olefin in the second reaction zone is from 0.5:1 to 20:1.8. The process of claim 1 , wherein the second reaction zone is conducted in the vapor phase.9. The process of claim 1 , wherein the second catalyst is selected from the group consisting of phosphoric acid claim 1 , sulfuric acid claim 1 , tungstic acid claim 1 , ...

Group VIII Metal Hydrogenolysis Catalysts Having Low Selectivity to Ethers

Group VIII metal containing catalysts used in processes for producing ethanol from ethyl acetate by reacting the ethyl acetate with hydrogenation. The Group VIII metal containing catalyst has a selectivity to ether, especially diethyl ether, that is very low. The process may be integrated with an ethyl acetate production process, such as esterification, hydrogenation, or dehydrogenation. 1. A process for producing ethanol comprisingcontacting a feed stream comprising ethyl acetate with hydrogen in a reactor in the presence of a catalyst to produce a crude ethanol product that comprises less than 0.5 wt. % ether compounds, wherein the catalyst comprises tin, a Group VIII metal selected from the group consisting of palladium, platinum, and combinations thereof, and a support that comprises calcium, magnesium, tungsten, or molybdenum, provided that when the support comprises tungsten and/or molybdenum, the catalyst further comprises cobalt and/or the support further comprises cobalt and/or tin.2. The process of claim 1 , wherein the crude ethanol product comprises from 0.0001 to 0.5 wt. % diethyl ether.3. The process of claim 1 , wherein the support comprises a support material selected from the group consisting of silica claim 1 , pyrogenic silica claim 1 , and high purity silica.4. The process of claim 3 , wherein the support material is substantially free of alumina.5. The process of claim 1 , wherein the selectivity to ether compounds is less than 1%.6. The process of claim 1 , wherein the support comprises calcium oxide claim 1 , calcium silicate claim 1 , calcium metasilicate claim 1 , magnesium oxide claim 1 , magnesium silicate claim 1 , or magnesium metasilicate.7. The process of claim 1 , wherein the support comprises from 1 to 25 wt. % calcium or magnesium claim 1 , based on the total weight of the catalyst.8. The process of claim 1 , wherein the support comprises tungsten oxide claim 1 , cobalt tungstate claim 1 , molybdenum oxide claim 1 , cobalt molybdate ...

Integrated ethanol production by extracting halides from acetic acid

This invention relates to a process for producing ethanol and recovering methyl iodide, the process comprising the steps of carbonylating methanol in a carbonylation system in the presence of a carbonylation catalyst under conditions effective to form acetic acid; hydrogenating the acetic acid in a hydrogenation system in the presence of a hydrogenation catalyst to form a crude ethanol product comprising ethanol and water; and separating the crude ethanol product to form an ethanol stream and a water stream.

Direct and selective production of acetaldehyde from acetic acid utilizing a supported metal catalyst

A process for the selective production of acetaldehyde by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form acetaldehyde is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and iron supported on silica selectively produces acetaldehyde in a vapor phase at a temperature of about 300°C.

Ethanol production from acetic acid utilizing a cobalt catalyst

A process for the selective production of ethanol by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethanol is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over either cobalt and palladium supported on graphite or cobalt and platinum supported on silica selectively produces ethanol in a vapor phase at a temperature of about 25O0C.

Integrated process for the production of vinyl acetate from acetic acid via ethylene

This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual reactor zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.

Process for the reduction of aldehyde concentration in a target stream

A PROCESS FOR REDUCING THE ALDEHYDE CONCENTRATION IN A TARGET STREAM OF A CARBONYLATION PROCESS IS DISCLOSED. MORE SPECIFICALLY, A PROCESS FOR REDUCING THE ALDEHYDE CONCENTRATION IN AN INTERNAL PROCESS STREAM OR FEED STREAM OF A CARBONYLATION PROCESS IS DISCLOSED. IN PARTICULAR, A PROCESS IN WHICH A TARGET STREAM COMPRISING A CARBONYLATABLE REACTANT AND A FIRST ALDEHYDE CONCENTRATION IS SUBJECTED TO A REACTION COMPRISING A SUPPORTED CATALYST THAT COMPRISES AT LEAST ONE GROUP 8 TO GROUP 11 METAL AT CONDITIONS SUFFICIENT TO REDUCE THE FIRST ALDEHYDE CONCENTRATION TO A SECOND ALDEHYDE CONCENTRATION IS DISCLOSED.

Catalysts for making ethanol from acetic acid

Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Integrated process for the production of vinyl acetate from acetic acid via acetaldehyde

Process for reducing aldehyde concentration in a specific stream

Fremgangsmåte for reduksjon av aldehydkonsentrasjonen i en spesifikk strøm i en karbonyleringsprosess, eller mer bestemt i en indre prosesstrøm eller tilførselsstrøm i en karbonyleringsprosess. Spesielt beskrives en fremgangsmåte hvor en spesifikk strøm som omfatter en karbonylerbar reaktant og en første aldehydkonsentrasjon underkastes en reaksjon som omfatter en båret katalysator som omfatter minst ett metall fra gruppe 8 til gruppe I I ved betingelser som er tilstrekkelige til å redusere den første aldehydkonsentrasjon til en andre aldehydkonsentrasjon.

Processes for making ethanol from acetic acid

A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Integrated process for the production of vinyl acetate from acetic acid via acetaldehyde

This invention provides an integrated multistep economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form acetaldehyde. Acetaldehyde so formed can be converted to ethylidene diacetate via reaction with acetic anhydride. In a subsequent step so formed ethylidene diacetate is thermally decomposed to form VAM and acetic acid. Alternatively, acetaldehyde formed in the first step can selectively be reacted with ketene to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and iron supported on silica selectively produces acetaldehyde in a vapor phase at a temperature of about 300°C, which is selectively hydrogenated over platinum supported catalyst to form ethanol and dehydrated over NAFION catalyst to form ethylene at a temperature of about 185°C, which is mixed with molecular oxygen, acetic acid and reacted over a palladium/gold/potassium catalyst supported on titania to form VAM at a temperature of about 150°C to 170°C.

Processes for making ethanol from acetic acid

A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Integrated process for the production of vinyl acetate from acetic acid via ethyl acetate

Process for the reduction of aldehyde concentration in a target stream

A process for reducing the aldehyde concentration in a target stream of a carbonylation process is disclosed. More specifically, a process for reducing the aldehyde concentration in an internal process stream or feed stream of a carbonylation process is disclosed. In particular, a process in which a target stream comprising a carbonylatable reactant and a first aldehyde concentration is subjected to a reaction comprising a supported catalyst that comprises at least one Group 8 to Group 11 metal at conditions sufficient to reduce the first aldehyde concentration to a second aldehyde concentration is disclosed.

Processes for making ethanol from acetic acid

A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Processes for making ethanol or ethyl acetate from acetic acid using bimetallic catalysts

A process for selective formation of ethanol and/or ethyl acetate from acetic acid by hydrogenating acetic acid in the presence of a Pt/Sn catalyst or a Re/Pd catalyst. The catalyst may further comprise a support modifier to improve selectivity for the desired product.

Direct and selective production of ethanol from acetic acid using a platinum / tin catalyst

Un procedimiento para la formación selectiva y directa de etanol a partir de ácido acético que comprende: poner en contacto una corriente de alimentación que contiene ácido acético e hidrógeno en fase de vapor a una temperatura de 200 ºC a 300 ºC con un catalizador de hidrogenación que contiene una combinación de platino y estaño sobre un soporte de catalizador. A process for the selective and direct formation of ethanol from acetic acid comprising: contacting a feed stream containing acetic acid and hydrogen in the vapor phase at a temperature of 200 ° C to 300 ° C with a hydrogenation catalyst that It contains a combination of platinum and tin on a catalyst support.

Processes for making ethyl acetate from acetic acid

A process for hydrogenating acetic acid to form of ethyl acetate and mixtures of ethyl acetate and ethanol. The hydrogenation is done in the presence of catalyst, preferably on a support that optionally includes a support modifier.

Integrated process for the production of vinyl acetate from acetic acid via ethylene

This invention provides an integrated two stage economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethylene either in a single reactor zone or in a dual reactor zone wherein the intermediate hydrogenated products are either dehydrated and/or cracked to form ethylene. In a subsequent second stage so formed ethylene is reacted with molecular oxygen and acetic acid over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over a hydrogenation catalyst and subsequent reaction over a dehydration catalyst selectively produces ethylene, which is further mixed with acetic acid and molecular oxygen and reacted over a supported palladium/gold/potassium catalyst.

Catalysts for making ethyl acetate from acetic acid

Catalysts and processes for making catalysts suitable for use in processes for hydrogenating acetic acid to form of ethyl acetate and mixtures of ethyl acetate and ethanol. In a first embodiment, the catalyst includes a high loading of nickel, palladium or platinum. In a second embodiment, the catalyst comprises a first metal selected from nickel and palladium and a second metal selected from tin and zinc. In a third embodiment, the catalyst comprises one or more metals on a support that has been modified with an acidic support modifier or a redox support modifier.

Ethanol production from acetic acid utilizing a cobalt catalyst

A process for the selective production of ethanol by vapor phase reaction of acetic acid over a hydrogenating catalyst composition to form ethanol is disclosed and claimed. In an embodiment of this invention reaction of acetic acid and hydrogen over either cobalt and palladium supported on graphite or cobalt and platinum supported on silica selectively produces ethanol in a vapor phase at a temperature of about 250° C.

Catalysts for making ethyl acetate from acetic acid.

Catalizadores y procesos para hacer catalizadores adecuados para usarse en procesos para hidrogenar ácido acético para formar acetato de etilo y mezclas de acetato de etilo y etanol; en una primera modalidad, el catalizador incluye una alta carga de níquel, paladio o platino; en una segunda modalidad, el catalizador comprende un primer metal seleccionado de níquel y paladio y un segundo metal seleccionado de estaño y zinc; en una tercera modalidad, el catalizador comprende uno o más metales en un soporte que se ha modificado con un modificador de soporte ácido o un modificador de soporte de redox.

Vinyl acetate production process comprising: contacting a feed stream of acetic acid and hydrogen at elevated temperature with hydrogenation catalyst, enriching the stream with ethyl acetate, contacting the stream with a cracking catalyst, and separating the acetate from vinyl

Proceso de producción de acetato de vinilo que comprende contactar corriente de alimentación de ácido acético e hidrógeno a temperatura elevada con catalizador de hidrogenación y formar primera corriente, enriquecerla con acetato de etilo, contactar segunda zona de reacción para formar segundo producto gaseoso para formar tercera corriente. Vinyl acetate production process comprising contacting the acetic acid and hydrogen feed stream at elevated temperature with hydrogenation catalyst and forming first stream, enriching it with ethyl acetate, contacting second reaction zone to form second gaseous product to form third stream .

Process for catalytically producing ethylene directly from acetic acid in a single reaction zone

A process comprising providing a stream with a reactant capable of being carbonized with a first concentration of aldehyde and subjecting it to a reaction that includes a catalyst supported on a metal of group 8 to 11 in a position to reduce the first concentration of aldehyde to a second concentration.

Proceso que comprende proporcionar una corriente objetivo que contiene un reactante susceptible de ser carbonilado y una primera concentración de aldehido, y someter la corriente a una reacción con un catalizador soportado con al menos un metal del grupo 8 al 11, en condiciones para reducir la concentración de aldehido.

Processes for making ethanol from acetic acid

A process for selective formation of ethanol from acetic acid by hydrogenating acetic acid in the presence of first metal, a silicaceous support, and at least one support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Catalysts for making ethanol from acetic acid

Catalysts and processes for forming catalysts for use in hydrogenating acetic acid to form ethanol. In one embodiment, the catalyst comprises a first metal, a silicaceous support, and at least one metasilicate support modifier. Preferably, the first metal is selected from the group consisting of copper, iron, cobalt, nickel, ruthenium, rhodium, palladium, osmium, iridium, platinum, titanium, zinc, chromium, rhenium, molybdenum, and tungsten. In addition the catalyst may comprise a second metal preferably selected from the group consisting of copper, molybdenum, tin, chromium, iron, cobalt, vanadium, tungsten, palladium, platinum, lanthanum, cerium, manganese, ruthenium, rhenium, gold, and nickel.

Direct and selective production of ethyl acetate from acetic acid utilizing a bimetal supported catalyst

Processes for making ethanol from acetic acid.

Un proceso de formación selectiva de etanol a partir de ácido acético por hidrogenación de ácido acético en presencia del primer metal, soporte silicáceo y al menos un modificador de soporte; preferentemente, el primer metal es seleccionado del grupo que consiste de cobre, hierro, cobalto, níquel, rutenio, rodio, paladio, osmio, iridio, platino, titanio, zinc, cromo, renio, molibdeno y tungsteno; además el catalizador puede constar de un segundo metal preferiblemente seleccionado del grupo que consiste en cobre, molibdeno, estaño, cromo, hierro, cobalto, vanadio, tungsteno, paladio, platino, lantano, cerio, manganeso, rutenio, renio, oro y níquel.

Direct and selective production of acetaldehyde from acetic acid utilizing a supported metal catalyst

Integrated process for the production of vinyl acetate from acetic acid via acetaldehyde

Integrated process for the production of vinyl acetate from acetic acid via ethyl acetate

This invention provides an integrated three step economical process for the production of vinyl acetate monomer (VAM) from acetic acid in the vapor phase. First, acetic acid is selectively hydrogenated over a hydrogenating catalyst composition to form ethyl acetate which is cracked to form ethylene and acetic acid in the second step and in a subsequent step so formed ethylene and acetic acid is reacted with molecular oxygen over a suitable catalyst to form VAM. In an embodiment of this invention reaction of acetic acid and hydrogen over platinum and copper supported on silica selectively produces ethyl acetate in a vapor phase at a temperature of about 250°C, which is cracked over a NAFION catalyst to form ethylene and acetic acid at a temperature of about 185°C, which is mixed with molecular oxygen and reacted over a palladium/gold/potassium catalyst supported on titania to form VAM at a temperature of about 150°C to 170°C.

Direct and selective production of ethanol from acetic acid utilizing a platinum/tin catalyst

Process for the reduction of aldehyde concentration in a target stream

A process for reducing the aldehyde concentration in a target stream of a carbonylation process is disclosed. More specifically, a process for reducing the aldehyde concentration in an internal process stream or feed stream of a carbonylation process is disclosed. In particular, a process in which a target stream comprising a carbonylatable reactant and a first aldehyde concentration is subjected to a reaction comprising a supported catalyst that comprises at least one Group 8 to Group 11 metal at conditions sufficient to reduce the first aldehyde concentration to a second aldehyde concentration is disclosed.

Processes for making ethanol or ethyl acetate from acetic acid using bimetallic catalysts

Integrated process for the production of vinyl acetate from acetic acid via ethylene