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公开(公告)号：JPS5463000A
公开(公告)日：1979-05-21
申请号：JP9915478
申请日：1978-08-16
Applicant: BASF AG
Inventor： RAPP GUENTHER DR , KARTTE KLAUS DR , THOMAS ERWIN , MATSUMOTO GENYA
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公开(公告)号：DE3407291A1
公开(公告)日：1985-09-05
申请号：DE3407291
申请日：1984-02-29
Applicant: BASF AG
Inventor： BIFFAR WERNER DR , KARTTE KLAUS DR , LEHNERT RUDI DR , MROSS WOLF DIETER DR , STARKE KLAUS , SCHWARZMANN MATTHIAS DR
Abstract: The application relates to a process for the catalytic purification of nitrogen oxide-containing exhaust gases from diesel engines, in which ammonia is added to the exhaust gases and the gas mixture is passed over a non-noble metal catalyst which is, if appropriate, applied to a support.
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公开(公告)号：DE2111118A1
公开(公告)日：1972-09-14
申请号：DE2111118
申请日：1971-03-09
Applicant: BASF AG
Inventor： KARTTE KLAUS DR , JOCKERS KURT DR , MEIER HERMANN DR , TAGLINGER LUDWIG DR
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公开(公告)号：DE1767113A1
公开(公告)日：1971-08-12
申请号：DE1767113
申请日：1968-04-03
Applicant: BASF AG
Inventor： JOCKERS KURT DR , KARTTE KLAUS DR , MEIER HERMANN DR , TAGLINGER LUDWIG DR
IPC: C01B21/14
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公开(公告)号：DE3061061D1
公开(公告)日：1982-12-16
申请号：DE3061061
申请日：1980-05-21
Applicant: BASF AG
Inventor： FUCHS HUGO DR , GROSSKINSKY OTTO-ALFRED DR , FROMMER ELMAR DR , KARTTE KLAUS DR
IPC: C07D201/02 , C07D201/16 , C07D223/10
Abstract: A process for purifying caprolactam, which has been obtained by a Beckmann rearrangement, by extracting crude caprolactam with solvents, distilling the extract in the presence of alkali, and isolating pure caprolactam, wherein, in a first stage, caprolactam is distilled from the alkaline distillation residue at a bottom temperature of 130 DEG -160 DEG C., and is recycled to the distillation stage, the residue thus obtained is distilled, in a second stage, at a bottom temperature of 140 DEG -180 DEG C., and the distillate is treated with strongly acidic agents in a third stage and is then recycled to the extraction stage.
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Patent Agency Ranking6.发明专利
公开(公告)号：DE2000502A1
公开(公告)日：1971-07-15
申请号：DE2000502
申请日：1970-01-07
Applicant: BASF AG
Inventor： JOCKERS KURT DR , MEIER HERMANN DR , KOENIG KARL-HEINZ DR , KARTTE KLAUS DR
IPC: B01J23/644 , B01J27/057
Abstract: Preparation of N- 1-6C alkyl hydroxylamines by hydrogenation of nitroalkanes in aqs. H2SO4 takes place in presence of a Pt metal-containing catalyst containing at least one Main Group V or VI element with atomatic weight > 31. Reduction can be carried out at normal pressure with high selectivity and good space-time yields. In example, good results are obtained by using 0.5% PtS/0.2 on graphite for nitromethane hydrogenation at 35 degrees C namely 53 1 H2/hr hydrogenation velocity at 92 mol% selectively when using 0.12% Pt per nitromethane charged.
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公开(公告)号：CH500133A
公开(公告)日：1970-12-15
申请号：CH486769
申请日：1969-03-31
Applicant: BASF AG
Inventor： JOCKERS KURT DR , KARTTE KLAUS DR , MEIER HERMANN DR , TAGLINGER LUDWIG DR
IPC: C01B21/14
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公开(公告)号：DE3660147D1
公开(公告)日：1988-06-01
申请号：DE3660147
申请日：1986-02-28
Applicant: BASF AG
Inventor： BIFFAR WERNER DR , HOFSTADT OTTO , KARTTE KLAUS DR , THOMAS ERWIN , WEISS FRANZ-JOSEF DR
Abstract: Noble metal catalyst, in particular platinum catalysts, which are applied on carriers and have become poisoned by metals as a result of being used for many years in the preparation of hydroxyl-ammonium salts by catalytic reduction of nitric oxide with hydrogen in an aqueous mineral acid are regenerated by a process in which the metallic impurities are dissolved using nitric acid or aqua regia, the solution is neutralized, the troublesome metals are precipitated from the neutralized solution by means of a selective precipitating reagent, and the purified platinum solution is reused for the preparation of the catalyst. Organic complexing agents which form insoluble or sparingly soluble complexes with the metallic impurities are preferably used as precipitating reagents.
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公开(公告)号：DE3507832A1
公开(公告)日：1986-09-11
申请号：DE3507832
申请日：1985-03-06
Applicant: BASF AG
Inventor： BIFFAR WERNER DR , HOFSTADT OTTO , KARTTE KLAUS DR , THOMAS ERWIN , WEISS FRANZ-JOSEF DR
Abstract: Noble metal catalyst, in particular platinum catalysts, which are applied on carriers and have become poisoned by metals as a result of being used for many years in the preparation of hydroxyl-ammonium salts by catalytic reduction of nitric oxide with hydrogen in an aqueous mineral acid are regenerated by a process in which the metallic impurities are dissolved using nitric acid or aqua regia, the solution is neutralized, the troublesome metals are precipitated from the neutralized solution by means of a selective precipitating reagent, and the purified platinum solution is reused for the preparation of the catalyst. Organic complexing agents which form insoluble or sparingly soluble complexes with the metallic impurities are preferably used as precipitating reagents.
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公开(公告)号：DE2862408D1
公开(公告)日：1984-06-28
申请号：DE2862408
申请日：1978-08-09
Applicant: BASF AG
Inventor： RAPP GUENTHER DR , KARTTE KLAUS DR , THOMAS ERWIN , MATSUMOTO GENYA
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