公开(公告)号：EP1125633A8

公开(公告)日：2001-10-31

申请号：EP01102003

申请日：2001-01-30

Applicant: DEGUSSA

Inventor： BERWEILER MONIKA ,  FREUND ANDREAS DR ,  GIRKE WALTER ,  HOEPP MATTHIAS DR ,  OSTGARD DANIEL DR ,  SAUER JOERG DR ,  VANHEERTUM RUDOLF DR

IPC: B01J23/847 ,  B01J23/86 ,  B01J23/89 ,  B01J25/00 ,  B01J37/08 ,  C07C51/295 ,  C07C227/02 ,  C07C229/16 ,  C07C51/00

CPC classification number: C07C229/16 ,  B01J23/8472 ,  B01J23/868 ,  B01J23/8926 ,  B01J25/00 ,  B01J37/08 ,  C07C51/295 ,  C07C227/02 ,  C07C59/06 ,  C07C55/07

Abstract: Raney-Kupfer, das mit mindestens einem Metall aus der Gruppe Eisen und/oder Edelmetallen dotiert ist, wird als Katalysator bei der Dehydrierung von Alkoholen eingesetzt.
Als erste Alternative wird ein Raney-Kupfer-Katalysator beschrieben bei dem die ursprüngliche Legierung mehr als 50% Kupfer enthält, sodaß der entgültige Katalysator mehr restliches Aluminium enthält als man normalerweise unter denselben Aktivierungsbedingunggen findet.
Als zweite Alternative wird ein Raney-Kupfer-Katalysator offenbart bei dem die ursprüngliche Legierung in Luftatmosphäre bei Temperaturen höher als 500°C vor der Aktivierung calziniert wurde.

公开(公告)号：DE59303861D1

公开(公告)日：1996-10-24

申请号：DE59303861

申请日：1993-10-18

Applicant: DEGUSSA

Inventor： NEHER ARMIN DR ,  HAAS THOMAS DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07B61/00 ,  C07C45/52 ,  C07C47/22

Abstract: A process for the production of acrolein by dehydration of glycerol in the liquid phase or in the gaseous phase, in each case on acidic solid catalysts, is described. Compared with previously known processes, the space-time yield and catalyst service life may be surprisingly increased with higher selectivity by treating a glycerol-water mixture with a glycerol content of 10 to 40 wt. % at 180 DEG to 340 DEG C. (liquid phase) or at 250 DEG to 340 DEG C. (gaseous phase) on a solid catalyst with an Ho value (Hammett acidity function) of less than +2, preferably less than -3.

公开(公告)号：MX9307070A

公开(公告)日：1994-05-31

申请号：MX9307070

申请日：1993-11-12

Applicant: DEGUSSA

Inventor： KLENK HERBERT ,  GIRKE WALTER ,  HASS THOMAS ,  NEHER ARMIN ,  ARNTZ DIETRICH

IPC: C07C29/136 ,  C07C31/20 ,  C07C29/141 ,  C07C29/145 ,  C07C45/52 ,  C07C45/64 ,  C07C47/22 ,  C07C49/17 ,  C07C29/60

Abstract: The invention relates to a method for the simultaneous preparation of 1,2- and 1,3-propanediol from glycerol. 1,2-Propanediol is customarily prepared from propylene oxide, 1,3-propanediol by hydration of acrolein with subsequent hydrogenation. The process according to the invention comprises the reaction stages (a) dehydration of glycerol by passing a gaseous glycerol/water mixture containing 10 to 40% by weight of glycerol at 250 to 340@C over a solid catalyst having an Ho value (Hammett's acid function) of less than 2, preferably between -3 and -8.2, (b) hydration of the acrolein contained in the reaction mixture of stage (a) and (c) catalytic hydrogenation of the reaction mixture containing the 3-hydroxypropionaldehyde and hydroxyacetone of stage (b). Two useful substances, namely 1,2- and 1,3-propanediol, can simultaneously be obtained in a high total yield from glycerol in a simple process.

公开(公告)号：ES2086850T3

公开(公告)日：1996-07-01

申请号：ES93116791

申请日：1993-10-18

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  NEHER ARMIN DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07C29/136 ,  C07C29/141 ,  C07C29/145 ,  C07C45/52 ,  C07C45/64 ,  C07C31/20 ,  C07C47/22 ,  C07C49/17

Abstract: The invention relates to a method for the simultaneous preparation of 1,2- and 1,3-propanediol from glycerol. 1,2-Propanediol is customarily prepared from propylene oxide, 1,3-propanediol by hydration of acrolein with subsequent hydrogenation. The process according to the invention comprises the reaction stages (a) dehydration of glycerol by passing a gaseous glycerol/water mixture containing 10 to 40% by weight of glycerol at 250 to 340@C over a solid catalyst having an Ho value (Hammett's acid function) of less than 2, preferably between -3 and -8.2, (b) hydration of the acrolein contained in the reaction mixture of stage (a) and (c) catalytic hydrogenation of the reaction mixture containing the 3-hydroxypropionaldehyde and hydroxyacetone of stage (b). Two useful substances, namely 1,2- and 1,3-propanediol, can simultaneously be obtained in a high total yield from glycerol in a simple process.

公开(公告)号：AT137729T

公开(公告)日：1996-05-15

申请号：AT93116791

申请日：1993-10-18

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  NEHER ARMIN DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07C31/20 ,  C07C29/136 ,  C07C29/141 ,  C07C29/145 ,  C07C45/52 ,  C07C45/64 ,  C07C47/22 ,  C07C49/17

Abstract: The invention relates to a method for the simultaneous preparation of 1,2- and 1,3-propanediol from glycerol. 1,2-Propanediol is customarily prepared from propylene oxide, 1,3-propanediol by hydration of acrolein with subsequent hydrogenation. The process according to the invention comprises the reaction stages (a) dehydration of glycerol by passing a gaseous glycerol/water mixture containing 10 to 40% by weight of glycerol at 250 to 340@C over a solid catalyst having an Ho value (Hammett's acid function) of less than 2, preferably between -3 and -8.2, (b) hydration of the acrolein contained in the reaction mixture of stage (a) and (c) catalytic hydrogenation of the reaction mixture containing the 3-hydroxypropionaldehyde and hydroxyacetone of stage (b). Two useful substances, namely 1,2- and 1,3-propanediol, can simultaneously be obtained in a high total yield from glycerol in a simple process.

公开(公告)号：DE4238492C2

公开(公告)日：1995-06-14

申请号：DE4238492

申请日：1992-11-14

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  NEHER ARMIN DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07C29/136 ,  C07C29/141 ,  C07C29/145 ,  C07C31/20 ,  C07C45/52 ,  C07C45/64 ,  C07C47/22 ,  C07C49/17

Abstract: The invention relates to a method for the simultaneous preparation of 1,2- and 1,3-propanediol from glycerol. 1,2-Propanediol is customarily prepared from propylene oxide, 1,3-propanediol by hydration of acrolein with subsequent hydrogenation. The process according to the invention comprises the reaction stages (a) dehydration of glycerol by passing a gaseous glycerol/water mixture containing 10 to 40% by weight of glycerol at 250 to 340@C over a solid catalyst having an Ho value (Hammett's acid function) of less than 2, preferably between -3 and -8.2, (b) hydration of the acrolein contained in the reaction mixture of stage (a) and (c) catalytic hydrogenation of the reaction mixture containing the 3-hydroxypropionaldehyde and hydroxyacetone of stage (b). Two useful substances, namely 1,2- and 1,3-propanediol, can simultaneously be obtained in a high total yield from glycerol in a simple process.

公开(公告)号：DE4238492A1

公开(公告)日：1994-05-19

申请号：DE4238492

申请日：1992-11-14

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  NEHER ARMIN DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07C29/136 ,  C07C29/141 ,  C07C29/145 ,  C07C31/20 ,  C07C45/52 ,  C07C45/64 ,  C07C47/22 ,  C07C49/17

Abstract: The invention relates to a method for the simultaneous preparation of 1,2- and 1,3-propanediol from glycerol. 1,2-Propanediol is customarily prepared from propylene oxide, 1,3-propanediol by hydration of acrolein with subsequent hydrogenation. The process according to the invention comprises the reaction stages (a) dehydration of glycerol by passing a gaseous glycerol/water mixture containing 10 to 40% by weight of glycerol at 250 to 340@C over a solid catalyst having an Ho value (Hammett's acid function) of less than 2, preferably between -3 and -8.2, (b) hydration of the acrolein contained in the reaction mixture of stage (a) and (c) catalytic hydrogenation of the reaction mixture containing the 3-hydroxypropionaldehyde and hydroxyacetone of stage (b). Two useful substances, namely 1,2- and 1,3-propanediol, can simultaneously be obtained in a high total yield from glycerol in a simple process.

公开(公告)号：MY130089A

公开(公告)日：2007-05-31

申请号：MYPI9302378

申请日：1993-11-12

Applicant: DEGUSSA

Inventor： NEHER ARMIN DR ,  HAAS THOMAS DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07B61/00 ,  C07C47/22 ,  C07C45/52

Abstract: THE INVENTION PROVIDES A PROCESS FOR THE PRODUCTION OF ACROLEIN BY DEHYDRATION OF GLYCEROL IN THE LIQUID PHASE OR IN THE GAS PHASE, IN EACH CASE ON ACIDIC SOLID CATALYSTS.COMPARED WITH PREVIOUSLY KNOWN PROCESSES, THE SPACE-TIME YIELD AND CATALYST SERVICE LIFE MAY BE INCREASED WITH HIGHER SELECTIVITY ACCORDING TO THE INVENTION BY TREATING A GLYCEROL-WATER MIXTURE WITH A GLYCEROL CONTENT OF 10 TO 40 WT.% AT 180 TO 340°C (LIQUID PHASE) OR 250 TO 340°C (GAS PHASE) ON A SOLID CATALYST WITH AN HO VALUE (HAMMETT ACIDITY FUNCTION) OF LESS THAN +2, PREFERABLY LESS THAN-3.

公开(公告)号：AT142999T

公开(公告)日：1996-10-15

申请号：AT93116792

申请日：1993-10-18

Applicant: DEGUSSA

Inventor： NEHER ARMIN DR ,  HAAS THOMAS DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07B61/00 ,  C07C45/52 ,  C07C47/22

Abstract: A process for the production of acrolein by dehydration of glycerol in the liquid phase or in the gaseous phase, in each case on acidic solid catalysts, is described. Compared with previously known processes, the space-time yield and catalyst service life may be surprisingly increased with higher selectivity by treating a glycerol-water mixture with a glycerol content of 10 to 40 wt. % at 180 DEG to 340 DEG C. (liquid phase) or at 250 DEG to 340 DEG C. (gaseous phase) on a solid catalyst with an Ho value (Hammett acidity function) of less than +2, preferably less than -3.

公开(公告)号：DE59302507D1

公开(公告)日：1996-06-13

申请号：DE59302507

申请日：1993-10-18

Applicant: DEGUSSA

Inventor： HAAS THOMAS DR ,  NEHER ARMIN DR ,  ARNTZ DIETRICH DR ,  KLENK HERBERT DR ,  GIRKE WALTER

IPC: C07C29/136 ,  C07C29/141 ,  C07C29/145 ,  C07C45/52 ,  C07C45/64 ,  C07C31/20 ,  C07C47/22 ,  C07C49/17

Abstract: The invention relates to a method for the simultaneous preparation of 1,2- and 1,3-propanediol from glycerol. 1,2-Propanediol is customarily prepared from propylene oxide, 1,3-propanediol by hydration of acrolein with subsequent hydrogenation. The process according to the invention comprises the reaction stages (a) dehydration of glycerol by passing a gaseous glycerol/water mixture containing 10 to 40% by weight of glycerol at 250 to 340@C over a solid catalyst having an Ho value (Hammett's acid function) of less than 2, preferably between -3 and -8.2, (b) hydration of the acrolein contained in the reaction mixture of stage (a) and (c) catalytic hydrogenation of the reaction mixture containing the 3-hydroxypropionaldehyde and hydroxyacetone of stage (b). Two useful substances, namely 1,2- and 1,3-propanediol, can simultaneously be obtained in a high total yield from glycerol in a simple process.