公开(公告)号：DE19848595A1

公开(公告)日：2000-04-27

申请号：DE19848595

申请日：1998-10-21

Applicant: BASF AG

Inventor： BAIER MICHAEL ,  FETZER THOMAS ,  HOFSTADT OTTO ,  HESSE MICHAEL ,  BUERGER GERT ,  HARTH KLAUS ,  SCHUMACHER VOLKER ,  WISTUBA HERMANN ,  OTTO BERNHARD

IPC: B01D53/94 ,  B01D53/86 ,  B01J23/00 ,  B01J23/78 ,  B01J23/80 ,  B01J23/89 ,  C01G3/00 ,  C01G9/00 ,  B01J23/72 ,  B01J23/83 ,  B01D53/56

Abstract: Catalyst containing copper for decomposition of dinitrogen monoxide contains a metal oxide-alumina compound, in which the metal is copper and optionally zinc and/or magnesium and is present in an amount ranging from 0.8 to 1.5 times the stoichiometric amount for a spinel. Catalyst containing copper for decomposition of dinitrogen monoxide (N2O) contains a compound of formula (I). MxAl2O4 (I) M = copper or mixtures of copper with zinc and/or magnesium; and x = 0.8-1.5. Independent claims are also included for 2 methods of preparing the catalyst.

公开(公告)号：DE59603806D1

公开(公告)日：2000-01-05

申请号：DE59603806

申请日：1996-09-10

Applicant: BASF AG

Inventor： FETZER THOMAS ,  WAGNER ECKHART ,  ROETH EMIL ,  RUPPEL WILHELM ,  WISTUBA HERMANN ,  OTTO BERNHARD ,  SCHUMACHER VOLKER ,  BUERGER GERT

IPC: B01D53/56 ,  B01D53/77 ,  B01D53/86 ,  C01B21/38 ,  C01B21/40

Abstract: PCT No. PCT/EP96/03971 Sec. 371 Date Mar. 10, 1998 Sec. 102(e) Date Mar. 10, 1998 PCT Filed Sep. 10, 1996 PCT Pub. No. WO97/10042 PCT Pub. Date Mar. 20, 1997The invention relates to a process for removing nitrogen oxides from a gas stream containing same, which comprises passing the gas stream (A) through a stage for absorbing the nitrogen oxides other than N2O in an absorbent or reacting the nitrogen oxides other than N2O with an absorbent at a pressure of from 1,5 to 20 bar, and (B) through a stage for reducing the amount of N2O, preferably employing the pressure level of step A, and to apparatus therefor and the use thereof.

公开(公告)号：DE19819882A1

公开(公告)日：1999-10-28

申请号：DE19819882

申请日：1998-04-27

Applicant: BASF AG

Inventor： SCHUMACHER VOLKER ,  BUERGER GERT ,  FETZER THOMAS ,  BAIER MICHAEL ,  HESSE MICHAEL

IPC: B01D53/94 ,  B01D53/86 ,  B01J23/80 ,  C01B21/26 ,  C01B21/40

Abstract: Reactor for catalytically oxidizing ammonia to nitrogen oxides contains a catalyst for decomposing N2O arranged between a precious metal lattice catalyst and a heat exchanger. Independent claims are also included for: (A) an apparatus for the production of nitric acid from ammonia comprising a reactor for catalytically oxidizing ammonia to nitrogen oxides containing a catalyst for decomposing N2O arranged between a precious metal lattice catalyst and a heat exchanger, and an absorber for nitrogen oxides, and a reducer for reducing nitrogen oxides; and (B) a process for catalytically decomposing N2O comprising contacting a hot gas mixture produced from the catalytically oxidation of ammonia with the catalyst for decomposing N2O before subsequent cooling.

公开(公告)号：CA2329871C

公开(公告)日：2008-10-07

申请号：CA2329871

申请日：1999-04-15

Applicant: BASF AG

Inventor： FETZER THOMAS ,  BAIER MICHAEL ,  HESSE MICHAEL ,  BURGER GERT ,  SCHUMACHER VOLKER

IPC: B01D53/94 ,  C01B21/26 ,  B01D53/86 ,  B01J23/80 ,  C01B21/38 ,  C01B21/40

Abstract: In the reactor for the catalytic oxidation of ammonia into nitrogen oxides, which in the direction of flow contains, in this order, a precious-metal gauze catalyst and a heat exchanger, a catalyst for the decomposition of N20 is positioned between the precious-metal gauze catalyst and the heat exchanger. According to said method for the catalytic decomposition of N20 in a gaseous mixture obtained during the production of nitric acid by catalytic oxidation of ammonia, on a catalyst intended for the decomposition of N20, the hot gas mixture obtained as a result of the catalytic oxidation of ammonia is brought into contact with the catalyst used for the decomposition of N20 before being cooled.

公开(公告)号：NO323278B1

公开(公告)日：2007-02-26

申请号：NO20011928

申请日：2001-04-19

Applicant: BASF AG

Inventor： WISTUBA HERMANN ,  FETZER THOMAS ,  OTTO BERNHARD ,  HESSE MICHAEL ,  SCHUMACHER VOLKER ,  BAIER MICHAEL ,  HARTH KLAUS ,  HOFSTADT OTTO ,  BUERGER GERT

IPC: B01D53/86 ,  B01J23/00 ,  B01D53/94 ,  B01J23/72 ,  B01J23/78 ,  B01J23/80 ,  B01J23/89 ,  C01G3/00 ,  C01G9/00

Abstract: A copper-containing catalyst of the composition of N2O contains a compound of the formula MxAl2O4, where M is Cu or a mixture of Cu and Zn and/or Mg and x is from 0.8 to 1.5. The novel catalyst is used in a process for the catalytic decomposition of pure N2O or N2O contained in gas mixtures, at elevated temperatures.

公开(公告)号：DE59913742D1

公开(公告)日：2006-09-14

申请号：DE59913742

申请日：1999-10-18

Applicant: BASF AG

Inventor： BAIER MICHAEL ,  FETZER THOMAS ,  HOFSTADT OTTO ,  HESSE MICHAEL ,  BUERGER GERT ,  HARTH KLAUS ,  SCHUMACHER VOLKER ,  WISTUBA HERMANN ,  OTTO BERNHARD

IPC: B01D53/86 ,  B01D53/94 ,  B01J23/00 ,  B01J23/78 ,  B01J23/80 ,  B01J23/89 ,  C01G3/00 ,  C01G9/00

Abstract: A copper-containing catalyst of the composition of N2O contains a compound of the formula MxAl2O4, where M is Cu or a mixture of Cu and Zn and/or Mg and x is from 0.8 to 1.5. The novel catalyst is used in a process for the catalytic decomposition of pure N2O or N2O contained in gas mixtures, at elevated temperatures.

公开(公告)号：DE10036476A1

公开(公告)日：2002-02-07

申请号：DE10036476

申请日：2000-07-25

Applicant: BASF AG

Inventor： WESSEL HELGE ,  MUELLER ULRICH ,  RUPPEL WILHELM ,  FETZER THOMAS ,  HARTH KLAUS ,  SCHUMACHER VOLKER ,  OTTO BERNHARD

IPC: B01D53/86 ,  B01D53/56

Abstract: A process for the heterogeneous catalyzed gas phase decomposition of N2O uses a fixed bed catalyst comprising two or more catalyst layers that are optionally separated by inert intermediate layers or gas chambers.

公开(公告)号：DE10023538A1

公开(公告)日：2001-11-15

申请号：DE10023538

申请日：2000-05-13

Applicant: BASF AG

Inventor： WESSEL HELGE ,  BAIER MICHAEL ,  FETZER THOMAS ,  HARTH KLAUS ,  SCHUMACHER VOLKER ,  WANJEK HERBERT ,  OTTO BERNHARD

IPC: B01D53/04 ,  B01D53/86 ,  B01D53/56 ,  C01B21/26 ,  C07B63/00 ,  C07C45/28 ,  C07C47/127 ,  C07C51/27

Abstract: Heterogeneously-catalysed gas-phase decomposition of N2O involves placing an N2O-decomposing inert material downstream of the fixed bed catalyst.

公开(公告)号：NO20011928L

公开(公告)日：2001-06-20

申请号：NO20011928

申请日：2001-04-19

Applicant: BASF AG

Inventor： BAIER MICHAEL ,  FETZER THOMAS ,  HOFSTADT OTTO ,  HESSE MICHAEL ,  BUERGER GERT ,  HARTH KLAUS ,  SCHUMACHER VOLKER ,  WISTUBA HERMANN ,  OTTO BERNHARD

IPC: B01D53/86 ,  B01J23/00 ,  B01D53/94 ,  B01J23/78 ,  B01J23/80 ,  B01J23/89 ,  C01G3/00 ,  C01G9/00

Abstract: A copper-containing catalyst of the composition of N2O contains a compound of the formula MxAl2O4, where M is Cu or a mixture of Cu and Zn and/or Mg and x is from 0.8 to 1.5. The novel catalyst is used in a process for the catalytic decomposition of pure N2O or N2O contained in gas mixtures, at elevated temperatures.

公开(公告)号：NO20000666L

公开(公告)日：2000-08-14

申请号：NO20000666

申请日：2000-02-10

Applicant: BASF AG

Inventor： SCHUMACHER VOLKER ,  SIEBERT GERHARD

IPC: C01B21/28

Abstract: Use of an apparatus for distributing an ammonia/air mixture arising from ammonia oxidation on the cross-section of a reactor whose diameter is a multiple of the pipe diameter, where the inlet pipe is provided with a concentric inner pipe, to prevent the formation of N2O during ammonia oxidation is new.