公开(公告)号：DE4022853A1

公开(公告)日：1992-01-23

申请号：DE4022853

申请日：1990-07-18

Applicant: BASF AG

Inventor： WEISS FRANZ-JOSEF DR ,  FUCHS HUGO DR ,  STEIGLEITER WERNER ,  HOELDERICH WOLFGANG DR ,  GUNS LUC ,  NEUBAUER GERALD DR ,  RITZ JOSEF DR

IPC: B01J21/18 ,  B01J23/42 ,  B01J27/02 ,  B01J35/02 ,  B01J35/10 ,  C01B21/14

Abstract: Platinum catalysts on a graphite support, having a platinum content from 0.01 to 5 % by weight, are characterised in that the graphite support has a grain surface area of from 1 to 30 m /g. … 183 to 600 mu m 15% by volume +/- 15% absolute 68.3 to 183 mu m 30% by volume +/- 20% 31.0 to 68.3 mu m 25% by volume +/- 20% 17.1 to 31.0 mu m 15% by volume +/- 10% 5.2 to 17.1 mu m 12% by volume +/- 10% 5.2 mu m 5% by volume +/- 5% …

公开(公告)号：DE3762604D1

公开(公告)日：1990-06-13

申请号：DE3762604

申请日：1987-01-20

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  WEISS FRANZ-JOSEF DR ,  THOMAS ERWIN ,  RITZ JOSEF DR

IPC: C01B21/14

公开(公告)号：DE3713733A1

公开(公告)日：1988-11-17

申请号：DE3713733

申请日：1987-04-24

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  RITZ JOSEF DR ,  THOMAS ERWIN ,  WEISS FRANZ-JOSEF DR

IPC: B01J23/42 ,  C01B21/14

Abstract: Hydroxylammonium salts are prepared by catalytic reduction of nitrogen monoxide with hydrogen at elevated temperature in a dilute aqueous solution of a mineral acid in the presence, in suspension, of a supported platinum catalyst obtainable by precipitating metallic platinum from an aqueous platinum solution onto a support by means of a reducing agent in the presence of an organic chelating agent and partially poisoned with sulfur.

公开(公告)号：DE3607998A1

公开(公告)日：1987-09-17

申请号：DE3607998

申请日：1986-03-11

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  THOMAS ERWIN ,  WEISS FRANZ-JOSEF DR ,  RITZ JOSEF DR

IPC: C02F1/58 ,  B01J39/04 ,  B01J39/05 ,  C01B21/14 ,  C02F1/42

公开(公告)号：DE3465253D1

公开(公告)日：1987-09-17

申请号：DE3465253

申请日：1984-12-14

Applicant: BASF AG

Inventor： WEISS FRANZ-JOSEF DR ,  HABERMANN WOLFGANG CHEM ING ,  HAMMES PETER DR DIPL ING ,  RITZ JOSEF DR ,  THOMAS ERWIN ,  THOMA PETER DR DIPL ING

IPC: C25B1/00 ,  B01D57/02 ,  B01D61/44 ,  B01D61/50 ,  B01D61/54 ,  C01B21/14 ,  C01C1/26 ,  B01D13/02

公开(公告)号：DE3464890D1

公开(公告)日：1987-08-27

申请号：DE3464890

申请日：1984-12-10

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO ALFRED DR ,  FROMMER ELMAR DR ,  RITZ JOSEF DR ,  THOMAS ERWIN ,  WEISS FRANZ-JOSEF DR

IPC: C07D307/62 ,  C01B21/14 ,  C07C51/42 ,  C07C53/10 ,  C07C53/122

Abstract: Stabilized solutions of hydroxylamine or its salts in water or alcohols, containing the lactone of the formula I and their preparation.

公开(公告)号：DE3464889D1

公开(公告)日：1987-08-27

申请号：DE3464889

申请日：1984-11-26

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO-ALFRED DR ,  FROMMER ELMAR DR ,  RITZ JOSEF DR ,  THOMAS ERWIN ,  WEISS FRANZ-JOSEF DR

IPC: C01B21/14 ,  C07C51/42 ,  C07C53/10 ,  C07C53/122

Abstract: Stabilized solutions of hydroxylamine or its salts in water or alcohols, containing hydroxyanthraquinones, and their preparation.

公开(公告)号：DE3601803A1

公开(公告)日：1987-07-23

申请号：DE3601803

申请日：1986-01-22

Applicant: BASF AG

Inventor： FUCHS HUGO DR ,  WEISS FRANZ-JOSEF DR ,  THOMAS ERWIN ,  RITZ JOSEF DR

IPC: C01B21/14 ,  G01B21/14

公开(公告)号：DE3343597A1

公开(公告)日：1985-06-13

申请号：DE3343597

申请日：1983-12-02

Applicant: BASF AG

Inventor： GROSSKINSKY OTTO-ALFRED DR ,  FROMMER ELMAR DR ,  RITZ JOSEF DR ,  THOMAS ERWIN ,  WEISS FRANZ-JOSEF DR

IPC: C01B21/14 ,  C07C51/42 ,  C07C53/10 ,  C07C53/122

公开(公告)号：CZ288217B6

公开(公告)日：2001-05-16

申请号：CZ197297

申请日：1995-12-22

Applicant: BASF AG

Inventor： RITZ JOSEF DR ,  FISCHER ROLF DR ,  SCHNURR WERNER DR ,  ACHHAMMER GUENTER DR ,  LUYKEN HERMANN DR ,  FUCHS EBERHARD DR

IPC: C07D201/08 ,  C07B63/02 ,  C07D201/16

Abstract: The invented continuous purification process of raw caprolactam by hydrogenation followed by subsequent treatment in acid environment and then by distillation in alkaline medium is characterized by (a) converting 6-aminocapronitrile by reaction thereof with water to raw caprolactam, (b) separating high- and low-boiling components from the raw caprolactam of the stage (a), (c) treating the raw caprolactam obtained in the stage (b) with hydrogen at a temperature ranging from 50 to 150 degC and pressure in the range of 0.15 to 2.5 MPa in the presence of a hydrogenation catalyst and a required solvent and so obtaining a mixture A, (d1) conducting the mixture A in the solvent and at a temperature ranging from 30 to 80 degC and pressure in the range of 0.1 to 0.5 MPa through an ion exchanger containing acid terminal groups and to thereby obtaining a mixture B1 or (d2) distilling the mixture A in the presence of sulfuric acid, whereby prior addition of sulfuric acid the solvent being present can be removed and to thereby obtaining a mixture B2 and (e) distilling the mixture B1 or the mixture B2 in the presence of a base to thereby obtaining raw caprolactam.