Catalyst and process for preparing acrolein and/or acrylic acid by dehydration reaction of glycerin

A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier.A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier.A method for preparing the catalyst composition, comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium, drying and firing the resulting solid mixture, secondly impregnating the resulting solid mixture with a solution of heteropolyacid, drying, and firing the resulting solid mixture.A process for preparing acrolein and acrylic acid by dehydration of glycerin, carried out in the presence of the catalyst.

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.

Novel glycerol dehydration catalyst and production method therefor

Provided is a novel catalyst that can produce acrolein and acrylic acid in high yields using glycerol as starting material. The disclosed glycerol dehydration catalyst has niobic oxide synthesized by hydrothermal synthesis as the main component.

Process of dehydration reactions

The present invention relates to the production of acrolein, acrylic acid or methacrylic acid by dehydration reaction of renewable raw material such as glycerin or hydroxycarboxylic acids, in the presence of a novel catalyst system supported on a carrier having a bimodal structure and a high pore volume and distribution. The dehydration reactions can be carried out for longer operation duration, so that acrolein, acrylic acid or methacrylic acid can be produced at higher productivity and for longer running time.

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 35 G.

Process for preparing catalyst used in production of unsaturated aldehyde and/or unsaturated carboxylic acid by dehydration reaction of glycerin, and catalyst obtained

A process for preparing a catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin, characterized by the steps of mixing a solution of heteropolyacid or constituents of heteropolyacid, a solution of at least one metal selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements or its onium and a carrier to obtain a solid substance, and then of effecting at least one time of calcination before said solid substance is used in the dehydration reaction of glycerin. A catalyst obtained by the process for use in a production of acrolein and acrylic acid by dehydration reaction of glycerin. A process for preparing acrolein by catalytic dehydration of glycerin carried out in the presence of the catalyst and under a pressurized condition. A process for preparing acrylic acid obtained by oxydation of acrolein obtained. A process for preparing acrylonitrile obtained by ammoxidation of acrolein obtained.

CATALYST AND PROCESS FOR PREPARING ACROLEIN AND/OR ACRYLIC ACID BY DEHYDRATION REACTION OF GLYCERIN

A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier. 1. A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier.3. The catalyst composition of claim 1 , in which said titania carrier comprises rutile or anatase or amorphous titanium oxide.4. The catalyst composition of claim 3 , in which said titania carrier comprises at least 80% anatase.5. The catalyst composition of claim 1 , in which said cation is at least one alkali metal cation.6. The catalyst composition of claim 5 , in which said alkali metal is cesium.7. The catalyst composition of claim 2 , in which said compound contains at least one element selected from the group comprising W claim 2 , Mo and V.8. A method for preparing a catalyst composition claim 2 , comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium claim 2 , drying and firing the resulting solid mixture claim 2 , secondly impregnating the resulting solid mixture with a solution of heteropolyacid claim 2 , drying claim 2 , and firing the resulting solid mixture.9. A method for preparing a catalyst composition claim 2 , comprising impregnating a titania carrier with a solution of heteropolyacid claim 2 , drying and firing the resulting solid mixture claim 2 , optionally secondly impregnating the resulting impregnated carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium claim 2 , drying claim 2 , and firing the resulting solid mixture.10. A method for preparing a catalyst composition prepared by more than one cycle of impregnation and firing claim 2 ...

PROCESS FOR PREPARING CATALYST USED IN PRODUCTION OF UNSATURATED ALDEHYDE AND/OR UNSATURATED CARBOXYLIC ACID BY DEHYDRATION REACTION OF GLYCERIN, AND CATALYST OBTAINED

A process for preparing a catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin, characterized by the steps of mixing a solution of heteropolyacid or constituents of heteropolyacid, a solution of at least one metal selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements or its onium and a carrier to obtain a solid substance, and then of effecting at least one time of calcination before said solid substance is used in the dehydration reaction of glycerin. 1. A process for preparing a catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin , characterized by the steps of mixing a solution of at least one metal selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements or its onium with a solution of heteropolyacid or constituents of heteropolyacid , and of calcinating the resulting solid substance directly or after the resulting solid substance is supported on a carrier.2. A process for preparing a catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin , characterized by the steps of either mixing a solution of heteropolyacid or constituents of heteropolyacid with a carrier , and then adding a solution of at least one metal selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements or its onium to the resulting mixture , or mixing a solution of at least one metal selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements or its onium with a carrier , and then adding a solution of heteropolyacid or constituents of heteropolyacid to the resulting mixture , and then calcinating the resulting solid substance to obtain the catalyst.3. A process for preparing a catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin , characterized by mixing a solution of heteropolyacid or constituents of ...

Novel Glycerol Dehydration Catalyst and Production Method Therefor

Provided is a novel catalyst that can produce acrolein and acrylic acid in high yields using glycerol as starting material. The disclosed glycerol dehydration catalyst has niobic oxide synthesized by hydrothermal synthesis as the main component. 1. A catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin , characterized by said catalyst comprises niobium oxide (NbO , in which Nb is niobium and x is any number) prepared by hydrothermal synthesis technique.2. The catalyst of claim 1 , wherein said niobium oxide (NbO) has each one diffraction peak at 2θ=22.6±0.3° and 2θ=46.1±0.3° respectively in the X-ray diffraction pattern (Cu—Kα claim 1 , λ=1.5418 nm).3. The catalyst of or claim 1 , wherein the said niobium oxide contains further tungsten and has following formula: WNbOx in which Nb is niobium claim 1 , b>0 claim 1 , x is a value determined by the oxidation numbers of Nb and W.4. The catalyst of any one of to claim 1 , represented by the following general formula (1):{'br': None, 'sub': a', 'b', 'x', '2, 'A(WNbO).nHO \u2003\u2003(1)'}in which A is at least one member selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements and ammonium, W is tungsten, Nb is niobium, a≦0, b≦0, x is a number determined by oxidation numbers of the elements, and n is a any positive number.5. The catalyst of any one of to claim 1 , wherein said niobium oxide is added with at least one salt of elements belonging to Group 1 to Group 16 of the Periodic Table of Elements and ammonium.6. A method for preparing a catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin claim 1 , characterized in that said catalyst is prepared by oxidizing a niobium compound which is changed to an oxide under heat by hydrothermal synthesis technique.7. Use of the catalyst according to any one of to in a process for preparing acrolein and acrylic acid by catalytic dehydration of glycerin. This invention ...

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 AND PROCESS FOR PREPARING ACROLEIN AND/OR ACRYLIC ACID BY DEHYDRATION REACTION OF GLYCERIN

A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier. 126-. (canceled)27. A process for preparing acrolein by dehydration of glycerin , carried out in the presence of a catalyst , wherein the catalyst composition comprising at least an heteropolyacid in which protons in the hetropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier.29. The process of claim 27 , in which said titania carrier comprises rutile or anatase or amorphous titanium oxide.30. The process of claim 27 , in which said titania earner comprises at least 80% anatase.31. The process of claim 27 , in which said cation is at least one alkali metal cation.32. The process of claim 27 , in which said alkali metal is cesium.33. The process of claim 28 , in which said compound contains at least one element selected from the group comprising W claim 28 , Mo and V.34. A process for preparing acrolein by dehydration of glycerin claim 28 , carried out in the presence of a catalyst claim 28 , wherein the catalyst is prepared according to a method for preparing a catalyst composition comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium claim 28 , drying and firing the resulting solid mixture claim 28 , secondly impregnating the resulting solid mixture with a solution of heteropolyacid claim 28 , drying claim 28 , and firing the resulting solid mixture.35. A process for preparing acrolein by dehydration of glycerin claim 28 , carried out in the presence of a catalyst claim 28 , wherein the catalyst is prepared according to a method for preparing a catalyst composition comprising impregnating a titania carrier with a solution of heteropolyacid claim 28 , drying and firing the resulting solid ...

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 ...

Catalyst For Preparing Acrolein And Acrylic Acid By Dehydration Of Glycerin, And Its Production Process

An object of the present invention is to provide a catalyst for glycerin dehydration reaction for producing unsaturated aldehyde and unsaturated carboxylic acid at higher yield by a dehydration reaction of glycerin, and that can reduce a decrease in time of the conversion ratio of glycerin and the yields of unsaturated aldehyde and of unsaturated carboxylic acid. Another object of the present invention is to provide a catalyst for glycerin dehydration reaction that can produce acrolein and acrylic acid at higher yield by the dehydration reaction of glycerin, and the catalyst has a longer life. Still another object of the present invention is to provide a method for preparing the catalysts above. A catalyst for glycerin dehydration comprising a carrier, wherein the carrier includes at least one metal oxide selected from the group consisting TiO, SiO, AlO, ZrO, and NbO, wherein the carrier includes a bimodal porous structure in which the volume ratio between a pore volume of mesopores having a pore size of more than 2 nm to less than 50 nm to a pore volume of macropores having a pore size of 50 nm or more is equal to or more than 0.5, and wherein the carrier configures to support a W-containing metal oxide thereon or a metal oxide containing at least one element selected from the group consisting of P, Si, Mo, and V, in addition to the W-containing metal oxide thereon, and to cause a catalytic dehydrogenation reaction with glycerin to produce acrolein and acrylic acid. 1. A catalyst for glycerin dehydration comprising a carrier ,{'sub': 2', '2', '2', '3', '2', '2', '5, 'wherein the carrier includes at least one metal oxide selected from the group consisting TiO, SiO, AlO, ZrO, and NbO,'}wherein the carrier includes a bimodal porous structure in which the volume ratio between a pore volume of mesopores having a pore size of more than 2 nm to less than 50 nm to a pore volume of macropores having a pore size of 50 nm or more is equal to or more than 0.5, andwherein the ...

Improved process of dehydration reactions

The present invention relates to the production of acrolein, acrylic acid or methacrylic acid by dehydration reaction of renewable raw material such as glycerin or hydroxycarboxylic acids, in the presence of a novel catalyst system supported on a carrier having a bimodal structure and a high pore volume and distribution. The dehydration reactions can be carried out for longer operation duration, so that acrolein, acrylic acid or methacrylic acid can be produced at higher productivity and for longer running time.

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.

Process for manufacturing acrolein or acrylic acid from glycerin

The subject of the present invention is a process for preparing acrolein by dehydration of glycerin, characterized in that the dehydration is carried out in the presence of a catalyst comprising mainly a compound in which protons in a heteropolyacid are exchanged at least partially with at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements. The process according to the invention permits to obtain acrolein at higher yield.

Catalyst and process for preparing acrolein and/or acrylic acid by dehydration reaction of glycerin

A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier.A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements that have been deposited on a porous titania carrier.A method for preparing the catalyst composition, comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium, drying and firing the resulting solid mixture, secondly impregnating the resulting solid mixture with a solution of heteropolyacid, drying, and firing the resulting solid mixture.A process for preparing acrolein and acrylic acid by dehydration of glycerin, carried out in the presence of the catalyst.

Catalyst for producing acrolein and acrylic acid through glycerin dehydration and production method of same

Catalyst used in a process for preparing acrolein and acrylic acid at higher yield to convert glycerin to valuable other chemical raw materials. The glycerin dehydration catalyst consists mainly of a compound containing at least one element selected from Mo, W and V, in which protons in the heteropolyacid are exchanged at least partially with at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements.

Catalyst for preparing acrolein or acrylic acid by dehydration reaction of glycerin and method for producing the same

Catalyst used in a process for preparing acrolein and acrylic acid at higher yield to convert glycerin to valuable other chemical raw materials. The glycerin dehydration catalyst consists mainly of a compound containing at least one element selected from Mo, W and V, in which protons in the heteropolyacid are exchanged at least partially with at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements.

Process for preparing catalyst used in production of unsaturated aldehyde and/or unsaturated carboxylic acid by dehydration reaction of glycerin, and catalyst obtained

A process for preparing a catalyst used in a production of acrolein and acrylic acid by dehydration reaction of glycerin, characterized by the steps of mixing a solution of heteropolyacid or constituents of heteropolyacid, a solution of at least one metal selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements or its onium and a carrier to obtain a solid substance, and then of effecting at least one time of calcination before said solid substance is used in the dehydration reaction of glycerin. A catalyst obtained by the process for use in a production of acrolein and acrylic acid by dehydration reaction of glycerin. A process for preparing acrolein by catalytic dehydration of glycerin carried out in the presence of the catalyst and under a pressurized condition. A process for preparing acrylic acid obtained by oxydation of acrolein obtained. A process for preparing acrylonitrile obtained by ammoxidation of acrolein obtained.

Process for preparing acrolein by dehydration of glycerin in the presence of a catalyst

Process for manufacturing acrolein or acrylic acid from glycerin

The subject of the present invention is a process for preparing acrolein by dehydration of glycerin, characterized in that the dehydration is carried out in the presence of a catalyst comprising mainly a compound in which protons in a heteropolyacid are exchanged at least partially with at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements. The process according to the invention permits to obtain acrolein at higher yield.

Catalyst for producing butadiene, method for producing said catalyst, and method for producing butadiene using said catalyst

Catalyst and process for preparing acrolein and/or acrylic acid by dehydration reaction of glycerin

A catalyst composition comprising at least an heteropolyacid deposited on a porous titania carrier. A catalyst composition comprising at least an heteropolyacid in which protons in the heteropolyacid may be partially exchanged by at least one cation selected from elements belonging to Group 1 to Group 16 of the Periodic Table of Elements thathave been deposited on a porous titania carrier. A method for preparing the catalyst composition, comprising impregnating a titania carrier with a solution of at least one metal selected from elements belonging to the Group 1 to Group 16 of the Periodic Table of Elements or onium, drying and firing the resulting solid mixture, secondly impregnating the resulting solid mixture with a solution of heteropolyacid, drying, andfiring the resulting solid mixture. A process for preparing acrolein and acrylic acid by dehydration of glycerin, carried out in the presence of the catalyst.No Suitable Figure