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公开(公告)号：CA2529730C
公开(公告)日：2009-10-13
申请号：CA2529730
申请日：2004-06-11
Inventor： ULLRICH NORBERT , STOCHNIOL GUIDO , JAEGER BERND , HOFEN WILLI , HAAS THOMAS , BRASSE CLAUDIA , WOELL WOLFGANG
IPC: C07D303/04 , C07D301/12
Abstract: The invention is directed to an improved process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100 ~C and the epoxidation reaction is carried out for periods o f more than 300 h between two regeneration steps.
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公开(公告)号：DE60304169D1
公开(公告)日：2006-05-11
申请号：DE60304169
申请日：2003-04-29
Inventor： BERGES JOSE , BRASSE CLAUDIA , EICKHOFF HUBERTUS , HAAS THOMAS , HOFEN WILLI , KAMPEIS PERCY , MOROFF GERALD , POHL WERNER , STOCHNIOL GUIDO , THIELE GEORG , ULLRICH NORBERT , WOELL WOLFGANG
IPC: C07D301/12 , C07B61/00 , C07D303/04
Abstract: The present invention relates to a process for the epoxidation of olefins by i) reacting an olefin with hydrogen peroxide in presence of an epoxidation catalyst and an alcoholic solvent; ii) separating product olefin oxide and unreacted olefin from the reaction product of step i); iii) recovering a stream comprising the alcoholic solvent, characterized by iv) subjecting the recovered stream of step iii) to hydrogenation.
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公开(公告)号：PL371503A1
公开(公告)日：2005-06-27
申请号：PL37150303
申请日：2003-04-29
Inventor： BERGES JOSE , BRASSE CLAUDIA , EICKHOFF HUBERTUS , HAAS THOMAS , HOFEN WILLI , KAMPEIS PERCY , MOROFF GERALD , POHL WERNER , STOCHNIOL GUIDO , THIELE GEORG , ULLRICH NORBERT , WOELL WOLFGANG
IPC: C07B61/00 , C07D301/12 , C07D303/04 , C07B41/04
Abstract: The present invention relates to a process for the epoxidation of olefins by i) reacting an olefin with hydrogen peroxide in presence of an epoxidation catalyst and an alcoholic solvent; ii) separating product olefin oxide and unreacted olefin from the reaction product of step i); iii) recovering a stream comprising the alcoholic solvent, characterized by iv) subjecting the recovered stream of step iii) to hydrogenation.
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公开(公告)号：CA2529730A1
公开(公告)日：2005-01-06
申请号：CA2529730
申请日：2004-06-11
Inventor： ULLRICH NORBERT , STOCHNIOL GUIDO , HAAS THOMAS , BRASSE CLAUDIA , WOELL WOLFGANG , HOFEN WILLI , JAEGER BERND
IPC: C07D303/04 , C07D301/12
Abstract: The invention is directed to an improved process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100 ~C and the epoxidation reaction is carried out for periods o f more than 300 h between two regeneration steps.
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公开(公告)号：CA2507068A1
公开(公告)日：2004-06-10
申请号：CA2507068
申请日：2003-11-25
Inventor： HOFEN WILLI , STOCHNIOL GUIDO , WOELL WOLFGANG , BRASSE CLAUDIA , HAAS THOMAS , ULLRICH NORBERT
IPC: C07D301/12
Abstract: The present invention refers to a process for the catalytic epoxidation of olefins in the presence of a titanium containing zeolite catalyst and a pola r solvent whereby the deactivation of the catalyst upon recycling of the solve nt has been considerably reduced. In the process one or more nitrogen containin g compounds are introduced at some stage, a solvent stream is recovered, treat ed to contain less than 50 wppm nitrogen in the form of organic nitrogen compounds and at least a part of it is recycled to the epoxidation step. The invention is also directed towards a process for the catalytic epoxidation o f propene which integrates the inventive treatment and recycle of the solvent into the workup of the reaction mixture.
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Patent Agency Ranking
公开(公告)号：CA2507068C
公开(公告)日：2011-07-26
申请号：CA2507068
申请日：2003-11-25
Inventor： HAAS THOMAS , HOFEN WILLI , WOELL WOLFGANG , BRASSE CLAUDIA , STOCHNIOL GUIDO , ULLRICH NORBERT
IPC: C07D301/12
Abstract: The present invention refers to a process for the catalytic epoxidation of olefins in the presence of a titanium containing zeolite catalyst and a polar solvent whereby the deactivation of the catalyst upon recycling of the solvent has been considerably reduced. In the process one or more nitrogen containing compounds are introduced at some stage, a solvent stream is recovered, treated to contain less than 50 wppm nitrogen in the form of organic nitrogen compounds and at least a part of it is recycled to the epoxidation step. The invention is also directed towards a process for the catalytic epoxidation of propene which integrates the inventive treatment and recycle of the solvent into the workup of the reaction mixture.
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公开(公告)号：DE602004011222T2
公开(公告)日：2008-12-24
申请号：DE602004011222
申请日：2004-06-11
Applicant: EVONIK DEGUSSA GMBH , UHDE GMBH
Inventor： HAAS THOMAS , BRASSE CLAUDIA , WOELL WOLFGANG , HOFEN WILLI , JAEGER BERND , STOCHNIOL GUIDO , ULLRICH NORBERT
IPC: C07D303/04 , C07D301/12
Abstract: The invention is directed to an improved process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100 DEG C and the epoxidation reaction is carried out for periods of more than 300 h between two regeneration steps.
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公开(公告)号：BRPI0411459A
公开(公告)日：2006-07-18
申请号：BRPI0411459
申请日：2004-06-11
Inventor： HAAS THOMAS , BRASSE CLAUDIA , LL WOLFGANG W , HOFEN WILLI , JAEGER BERND , STOCHNIOL GUIDO , ULLRICH NORBERT
IPC: C07D301/12 , C07D303/04
Abstract: The invention is directed to an improved process for the continuous epoxidation of propene with hydrogen peroxide in the presence of a titanium silicalite catalyst and a methanol solvent, wherein the catalyst is periodically regenerated by washing with a methanol solvent at a temperature of at least 100 DEG C and the epoxidation reaction is carried out for periods of more than 300 h between two regeneration steps.
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公开(公告)号：DE60304058D1
公开(公告)日：2006-05-11
申请号：DE60304058
申请日：2003-09-23
Inventor： BRASSE CLAUDIA , HAAS THOMAS , HOFEN WILLI , STOCHNIOL GUIDO , THIELE GEORG , WOELL WOLFGANG
IPC: C07D301/12
Abstract: Epoxidation of olefins with hydrogen peroxide in the presence of a heterogeneous catalyst promoting the epoxidation reaction comprises an aqueous reaction mixture comprising an olefin; hydrogen peroxide; less than 100 wppm alkali metals, alkaline earth metals, both irrespective whether in ionic or complex form, bases, and/or cations of bases having a pkB of less than 4.5; and >= 100 wppm bases or cations of bases having a pkB of >= 4.5.
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公开(公告)号：AT321034T
公开(公告)日：2006-04-15
申请号：AT03722565
申请日：2003-04-29
Inventor： BERGES JOSE , BRASSE CLAUDIA , EICKHOFF HUBERTUS , HAAS THOMAS , HOFEN WILLI , KAMPEIS PERCY , MOROFF GERALD , POHL WERNER , STOCHNIOL GUIDO , THIELE GEORG , ULLRICH NORBERT , WOELL WOLFGANG
IPC: C07B61/00 , C07D301/12 , C07D303/04
Abstract: The present invention relates to a process for the epoxidation of olefins by i) reacting an olefin with hydrogen peroxide in presence of an epoxidation catalyst and an alcoholic solvent; ii) separating product olefin oxide and unreacted olefin from the reaction product of step i); iii) recovering a stream comprising the alcoholic solvent, characterized by iv) subjecting the recovered stream of step iii) to hydrogenation.
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