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公开(公告)号：JP2000086634A
公开(公告)日：2000-03-28
申请号：JP24351899
申请日：1999-08-30
Applicant: DEGUSSA
Inventor： HEINZ DIETER , HOELDERICH WOLFGANG , KRILL STEFFEN , BOECK WOLFGANG DR , HUTHMACHER KLAUS DR
IPC: C07D213/79 , C07D213/80 , C07D213/803 , C07D213/807
Abstract: PROBLEM TO BE SOLVED: To provide an improved method for producing nicotinic acid, capable of profitably producing the nicotinic acid in a high yield by the direct oxidation of β-picoline by separately feeding the β-picoline and water into a reactor. SOLUTION: This method for producing nicotinic acid comprises separately feeding β-picoline and water into a reactor filled with a TiO2 support catalyst containing vanadium. This heterogeneous catalyst preferably contains anatase having a specific surface area of >100 m2/g as the support. The anatase support is preferably produced by a sulfate salt method. The titanium dioxide support preferably contains a sulfate salt in an amount of >0.1%. The catalyst preferably has a vanadium dioxide content of 5-50%. The reaction temperature is preferably 150-450 deg.C. The ratio of the acid/starting substance is preferably 5/1 to 40/1. The ratio of the water/starting substance is preferably 15/1 to 100/1. WHSV is preferably 0.02 to 5 h-1.
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公开(公告)号：CA2281293A1
公开(公告)日：2000-03-01
申请号：CA2281293
申请日：1999-08-31
Applicant: DEGUSSA
Inventor： HEINZ DIETER , HOELDERICH WOLFGANG , KRILL STEFFEN , BOECK WOLFGANG , HUTHMACHER KLAUS
IPC: C07D213/79 , C07D213/80 , C07D213/803 , C07D213/807
Abstract: The invention relates to an improved process for the preparation of nicotinic acid by the direct oxidation of .beta.-picoline in the gas phase, wherein water and .beta.-picoline are fed separately to the catalyst bed and the catalyst is based on a titanium dioxide support which has been prepared by the sulfate method and has a high specific surface area and a vanadium oxide content of from 5 to 50 %.
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Patent Agency Ranking
公开(公告)号：ZA995597B
公开(公告)日：2001-01-02
申请号：ZA995597
申请日：1999-08-31
Applicant: DEGUSSA
Inventor： KRILL STEFFEN , BOECK WOLFGANG , HUTHMACHER KLAUS , HEINZ DIETER , HOELDERICH WOLFGANG
IPC: C07D213/79 , C07D213/80 , C07D213/803 , C07D213/807 , C07D
Abstract: In the direct oxidation of beta -picoline to nicotinic acid, product yield is increased by the separate addition of the beta -picoline and water to the catalyst bed filled with a catalyst comprising a TiO2 carrier which contains vanadium.
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公开(公告)号：DE19839559A1
公开(公告)日：2000-03-02
申请号：DE19839559
申请日：1998-09-01
Applicant: DEGUSSA
Inventor： HEINZ DIETER , HOELDERICH WOLFGANG , KRILL STEFFEN , BOECK WOLFGANG , HUTHMACHER KLAUS
IPC: C07D213/79 , C07D213/80 , C07D213/803 , C07D213/807
Abstract: In the direct oxidation of beta -picoline to nicotinic acid, product yield is increased by the separate addition of the beta -picoline and water to the catalyst bed filled with a catalyst comprising a TiO2 carrier which contains vanadium.
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公开(公告)号：ZA9905597B
公开(公告)日：2001-01-02
申请号：ZA9905597
申请日：1999-08-31
Applicant: DEGUSSA
Inventor： HEINZ DIETER , HOELDERICH WOLFGANG , KRILL STEFFEN , BOECK WOLFGANG , HUTHMACHER KLAUS
IPC: C07D213/79 , C07D213/80 , C07D213/803 , C07D213/807 , C07D
CPC classification number: C07D213/803 , C07D213/80
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公开(公告)号：ID23580A
公开(公告)日：2000-05-04
申请号：ID990825
申请日：1999-08-31
Applicant: DEGUSSA
Inventor： HEINZ DIETER , HOLDERICH WOLFGANG , KRILL STEFEN , BOCK WOLFGANG , HUTCHMACHER KLAUS
IPC: C07D213/807
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公开(公告)号：BR9904055A
公开(公告)日：2000-09-19
申请号：BR9904055
申请日：1999-08-31
Applicant: DEGUSSA
Inventor： HEINZ DIETER , HOELDERICH WOLFGANG , KRILL STEFFEN , BOECK WOLFGANG , HUTHMACHER KLAUS
IPC: C07D213/79 , C07D213/80 , C07D213/803 , C07D213/807
Abstract: In the direct oxidation of beta -picoline to nicotinic acid, product yield is increased by the separate addition of the beta -picoline and water to the catalyst bed filled with a catalyst comprising a TiO2 carrier which contains vanadium.
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