公开(公告)号：DE59909810D1

公开(公告)日：2004-07-29

申请号：DE59909810

申请日：1999-02-25

Applicant: BASF AG

Inventor： DEMUTH DIRK ,  FETZER THOMAS ,  PRATSCH VOLKER ,  WENDRICH THOMAS ,  MENIG HELMUTH ,  WAMBACH LUDWIG ,  HARTH KLAUS

IPC: C07B61/00 ,  C07C45/38 ,  C07C45/39 ,  C07C47/04 ,  C07C47/127 ,  C07C47/19

Abstract: Carbonyl compounds of the formulawhere R1 is a hydrogen atom or an alkyl radical having from 1 to 3 carbon atoms, R2 is a hydrogen atom, an unsubstituted or C1-C3-alkyl-monosubstituted to -trisubstituted C2-C4-alkenyl radical or a radical of the formulawhere R3 is a hydrogen atom or together with R4 is an oxygen atom, R4 is the radical OR6 or together with R3 is an oxygen atom, R5 is a hydrogen atom, an alkyl radical having from 1 to 8 carbon atoms, an unsubstituted or C1-C3-alkyl-monosubstituted to -trisubstituted C2-C4-alkenyl radical or a cyclohexyl or cyclopentyl radical and R6 is an alkyl radical having from 1 to 4 carbon atoms, a cyclohexyl or cyclopentyl radical or a radical of the formula -CH2-CHO or -CH2-CH2-O-CH2-CHO, are prepared by gas-phase oxidation of methanol or alcohols of the formulawhere R1 and R5 are as defined above, by means of an oxygen-containing gas in the presence of copper- and/or silver-containing catalysts, the catalyst system used comprising at least one phosphorus-containing copper- and/or silver-containing catalyst.

公开(公告)号：CA2152815C

公开(公告)日：2004-04-06

申请号：CA2152815

申请日：1994-01-13

Applicant: BASF AG

Inventor： FETZER THOMAS ,  BUECHELE WOLFGANG ,  IRGANG MATTHIAS ,  OTTO BERNHARD ,  WISTUBA HERMANN ,  BUERGER GERT

IPC: B01J23/76 ,  B01J23/00 ,  B01J23/80 ,  B01J37/08 ,  C07B61/00 ,  C07C29/153 ,  C07C29/154 ,  C07C29/156 ,  C07C31/04

Abstract: Catalysts are produced by combining M-A12O4, in which M stands for an elemen t of the I, VII and VII secondary groups of the periodic table of elements, with tin, lead, an element of the II main or secondary group of the periodic table of elements, as an oxide or salt or in its elementary form, and by calcinating them at temperature from 300 t o 1300 .degree.C and pressures from 0.1 to 200 bars. Also disclosed is a process for producing these catalysts.

公开(公告)号：CA2152816C

公开(公告)日：2004-03-23

申请号：CA2152816

申请日：1994-01-13

Applicant: BASF AG

Inventor： FETZER THOMAS ,  BUECHELE WOLFGANG ,  WISTUBA HERMANN ,  OTTO BERNHARD ,  BUERGER GERT ,  PIJL PAUL

IPC: B01D53/56 ,  B01D53/86 ,  B01D53/94 ,  B01J21/04 ,  B01J23/00 ,  B01J23/72 ,  B01J23/76 ,  B01J23/78 ,  B01J23/80 ,  B01J35/10 ,  C07C51/487 ,  C01B21/02

Abstract: A process is disclosed for catalytically decomposing nitrous oxide pure or contained in gaseous mixtures at 200 to 900 .degree.C by using a catalyst prepared by combining CuAlzO4 with tin, lead, an element of the main or secondary group II of the periodic table of elements as an oxide or a salt or in the elementary form, and calcination at 300 to 1300 .degree.C and at a pressure from 0.1 to 200 bars.

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：DE19946671A1

公开(公告)日：2001-04-05

申请号：DE19946671

申请日：1999-09-29

Applicant: BASF AG

Inventor： SETZER UDO ,  OTTO BERNHARD ,  BECHTEL SIEGFRIED ,  GELDER RICHARD VAN ,  FETZER THOMAS ,  BORGWART JOACHIM ,  RAULS MATTHIAS ,  GAHN CHRISTOPH

IPC: B01D9/00 ,  B01J19/00 ,  B01J19/10 ,  C07C51/43 ,  C07B63/00

Abstract: A method for preventing crusting in reactors or crystallisers for solutions and suspensions involves exposure to ultrasound vibrations which are fed in from sonotrodes at about the level of the liquid or suspension in the vessel. A method for preventing the formation of a crust in reactors or crystallisers (e.g. production crystallisers) (13) for solutions and suspensions (11) by exposure to ultrasound vibrations from a high-frequency generator (1), which are fed into the system at input points (4) on the walls (6, 21) or base (7) of the container (13) via sonotrodes (3) connected to electromechanical transformers (2). The method involves feeding in the vibrations in a zone (16) around the level (17) of the liquid or suspension in the container. An Independent claim is also included for an arrangement for preventing crusting as above, in which sonotrodes are fitted in a ring around the crystallizer in a zone (16) between the level (17) of the suspension in the vessel (13) and the zone affected by a cooling medium (9).

公开(公告)号：BR9714044A

公开(公告)日：2000-05-09

申请号：BR9714044

申请日：1997-12-17

Applicant: BASF AG ,  DAIMLER BENZ AG

Inventor： FETZER THOMAS ,  MORSBACH BERND ,  KUMBERGER OTTO ,  HARTWEG MARTIN ,  ROITZHEIM ROLF-DIRC ,  SEIBOLD ANDREA ,  WALZ LEONHARD

IPC: B01D53/94 ,  B01J23/00 ,  B01J23/89 ,  F01N3/10

Abstract: PCT No. PCT/EP97/07091 Sec. 371 Date Jun. 16, 1999 Sec. 102(e) Date Jun. 16, 1999 PCT Filed Dec. 17, 1997 PCT Pub. No. WO98/26858 PCT Pub. Date Jun. 25, 1998A process for the catalytic reduction of NOx, the reduction taking place in the presence of a catalyst which comprises (a) from 20 to 97 wt % of A2O3, (b) from 1 to 40 wt % of CuO, (c) from 1 to 50 wt % of ZnO, (d) from 1 to 40 wt % of Ag, (e) from 0 to 2 wt % of Pt, (f) from 0 to 20 wt % of oxides of rare earth metals, elements of the 3rd subgroup of the Periodic Table of the Elements or mixtures thereof, based on the total weight of the components (a) to (e), which adds up to 100 wt %, wherein, in each case, up to half the weight of the component (a) may be replaced by Fe2O3, Cr2O3, Ga2O3 or mixtures thereof, of the component (b) by CoO, of the component (c) by MgO, of the component (d) by Au and of the component (e) by Pd, Ru, Os, Ir, Rh, Re or mixtures thereof, is used for reducing NOx, especially in combustion off-gases, the components (a), (b) and (c) forming a spinel which is doped with the components (d), (e) and (f).

公开(公告)号：CA2329871A1

公开(公告)日：1999-11-04

申请号：CA2329871

申请日：1999-04-15

Applicant: BASF AG

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

IPC: B01D53/94 ,  B01D53/86 ,  B01J23/80 ,  C01B21/26 ,  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 N2O is positioned between the precious-metal gauze catalyst and the heat exchanger. According to said method for the catalytic decomposition of N2O in a gaseous mixture obtained during the production of nitric acid by catalytic oxidation of ammonia, on a catalyst intended for the decomposition of N2O, 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 N2O before being cooled.

公开(公告)号：DE19811288A1

公开(公告)日：1999-09-23

申请号：DE19811288

申请日：1998-03-16

Applicant: BASF AG

Inventor： DEMUTH DIRK ,  FETZER THOMAS ,  PRATSCH VOLKER ,  WENDRICH THOMAS ,  MENIG HELMUTH

IPC: C07B61/00 ,  C07C45/38 ,  C07C45/39 ,  C07C47/04 ,  C07C47/127 ,  C07C47/19 ,  C07C45/29 ,  C07B41/06

Abstract: In the preparation of carbonyl compounds (I) by gas phase oxidation of methanol or alcohols with gas containing oxygen (O2) in the presence of catalysts containing copper and/or silver and optionally up to 20 ppm volatile phosphorus compound with respect to the alcohol, the catalyst system (III) consists of a catalyst (IIIA) containing Cu and/or Ag and P and a catalyst (IIIB) free from P. In the preparation of carbonyl compounds of formula (I) by gas phase oxidation of methanol or alcohols of formula (II) with gas containing oxygen (O2) in the presence of catalysts containing copper (Cu) and/or silver (Ag) and optionally up to 20 ppm volatile phosphorus (P) compound with respect to the alcohol, the catalyst system consists of a catalyst containing Cu and/or Ag and P and a catalyst free from P: R = H or 1-3 C alkyl; R = H, 2-4 C alkenyl, optionally mono- to trisubstituted by 1-3 C alkyl, or a group of formula (III); R = H; R = OR ; or R R = O; R = H, 1-8 C alkyl, 2-4 C alkenyl, optionally mono- to trisubstituted by 1-3 C alkyl, cyclohexyl or cyclopentyl; R = 1-4 C alkyl, cyclohexyl, cyclopentyl, -CH2-CHO or -CH2-CH2-O-CH2-CHO; R = H or -OR ; R = H, 1-4 C alkyl, cyclohexyl, cyclopentyl, -CH2-CH2-OH or -CH2-C2-O-CH2-CH2-OH.