公开(公告)号：AT269285T

公开(公告)日：2004-07-15

申请号：AT01927780

申请日：2001-03-22

Applicant: BASF AG

Inventor： SCHULTZ RALF ,  HEIDEMANN THOMAS ,  SCHWAB PETER ,  ZEHNER PETER

IPC: B01J19/24 ,  C07B61/00 ,  C07C2/08 ,  C07C2/10 ,  C07C2/24 ,  C07C11/02

Abstract: A process for the production of essentially unsaturated oligomers of 4-6C alkenes from an alkene or alkene containing hydrocarbon stream at a nickel containing heterogeneous catalyst in an adiabatic reactor at 20-300 [deg]C and 1-100 bar comprises working up a first partial outlet stream to the oligomer and recycling a second partial stream together with fresh alkene to the reactor.

公开(公告)号：DE10248002A1

公开(公告)日：2004-04-29

申请号：DE10248002

申请日：2002-10-15

Applicant: BASF AG

Inventor： STEINBRENNER ULRICH ,  HEIDEMANN THOMAS ,  NARBESHUBER THOMAS ,  MAAS HEIKO ,  PRINZ MARTINA ,  BOTTKE NILS ,  TROPSCH JUERGEN ,  BENFER REGINA ,  FUNKE FRANK ,  STEPHAN JUERGEN

IPC: C07C29/17 ,  C07C303/06 ,  C07C303/08 ,  C07C309/31 ,  C07C2/06 ,  C07C2/66 ,  C07C2/86 ,  C07C6/04 ,  C11D1/22

公开(公告)号：AT238838T

公开(公告)日：2003-05-15

申请号：AT99944416

申请日：1999-08-17

Applicant: BASF AG

Inventor： HEIDEMANN THOMAS ,  BAUER STEFAN ,  LINDEN GERD ,  PETERSEN HERMANN

IPC: B01J23/22 ,  B01J27/198 ,  B01J37/02 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31 ,  C07D307/89

Abstract: A coated catalyst for the catalytic gas-phase oxidation of aromatic hydrocarbons comprises, on an inert nonporous support, a catalytically active composition comprising a defined amount of vanadium oxide, titanium dioxide, a cesium compound, a phosphorus compound, and antimony oxide, wherein the catalytically active composition is applied in two or more layers and where relative to the inner layer or inner layers the outer layer has an antimony oxide content which is from 50 to 100% lower and wherein the amount of catalytically active composition of the inner layer or layers is from 10 to 90% by weight of the amount of catalytically active composition, and can be used for preparing carboxylic acids and/or anhydrides, in particular phthalic anhydride; also specified is a production process for such catalysts.

公开(公告)号：AU2002362492A1

公开(公告)日：2003-04-14

申请号：AU2002362492

申请日：2002-10-01

Applicant: BASF AG

Inventor： MAAS HEIKO ,  HEIDEMANN THOMAS ,  STEPHAN JURGEN ,  SCHINDLER GOTZ-PETER ,  STEINBRENNER ULRICH

IPC: C07C15/00 ,  C07C309/31 ,  C11D1/22 ,  C07C5/333 ,  C07C309/28

公开(公告)号：HU0104939A2

公开(公告)日：2002-04-29

申请号：HU0104939

申请日：1999-11-10

Applicant: BASF AG

Inventor： BAUER STEFAN ,  DIETRICH ULF ,  HEIDEMANN THOMAS ,  HIBST HARTMUT

IPC: C07D307/89 ,  B01J23/68 ,  B01J35/06 ,  B01J37/02 ,  C01G1/00 ,  C01G31/00 ,  C01G39/00 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31

Abstract: A multimetal oxide of the formula I Aga-bMbV2Ox*cH2O,  I where M is a metal selected from the group consisting of Li, Na, K, Rb, Cs, Tl, Mg, Ca, Sr, Ba, Cu, Zn, Cd, Pb, Cr, Au, Al, Fe, Co, Ni and/or Mo, a is from 0.3 to 1.9 and b is from 0 to 0.5, with the proviso that the difference (a−b)≧0.1 and c is from 0 to 20 and x is a number determined by the valence and amount of elements different from oxygen in the formula I, which has a crystal structure giving an X-ray powder diffraction pattern which displays reflections at the lattice spacings d of 15.23±0.6, 12.16±0.4, 10.68±0.3, 3.41±0.04, 3.09±0.04, 3.02±0.04, 2.36±0.04 and 1.80±0.04 Å. Precatalysts and catalysts produced therefrom for the partial oxidation of aromatic hydrocarbons are also provided.

公开(公告)号：DE10040827A1

公开(公告)日：2002-03-07

申请号：DE10040827

申请日：2000-08-21

Applicant: BASF AG

Inventor： REUTER PETER ,  VOIT GUIDO ,  HEIDEMANN THOMAS

IPC: C07D307/89 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31

Abstract: The invention relates to a method for producing phthalic anhydride by the gas phase oxidation of xylene, naphthalene or mixtures thereof in a multitube fixed-bed reactor, which is thermostatted by a heat-transfer medium, on two different fixed-bed catalysts arranged in layers. The invention method is carried out in such a manner that the maximum temperature in the second catalyst layer arranged in the direction of flow is approximately at least 52 DEG C lower than the maximum temperature in the first catalyst layer. The inventive method enables the production of phthalic anhydride with high yields under conditions relevant to practice.

公开(公告)号：AU9177901A

公开(公告)日：2002-03-04

申请号：AU9177901

申请日：2001-08-20

Applicant: BASF AG

Inventor： REUTER PETER ,  ULRICH BERNHARD ,  HEIDEMANN THOMAS

IPC: C07D307/89 ,  C07B61/00 ,  C07C51/265 ,  C07C63/06 ,  C07C63/16

Abstract: Aromatic hydrocarbons are partially oxidized in the gas phase over a catalyst at elevated temperature to form carboxylic acids or carboxylic anhydrides in a process in which a gas stream laden with the starting materials is passed through a shell-and-tube reactor whose temperature is controlled by means of one or more separate thermostatting baths conveyed in countercurrent to the starting gas stream, wherein the difference between the temperature of the thermostatting bath in the region of the reactor outlet and the temperature of the product gas stream leaving the reactor is employed to control the selectivity of the gas-phase oxidation.

公开(公告)号：AU1214402A

公开(公告)日：2002-03-04

申请号：AU1214402

申请日：2001-08-20

Applicant: BASF AG

Inventor： REUTER PETER ,  VOIT GUIDO ,  HEIDEMANN THOMAS

IPC: C07D307/89 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31

Abstract: A process for preparing phthalic anhydride by gas-phase oxidation of xylene, naphthalene or mixtures thereof over two different fixed-bed catalysts arranged in zones in a shell-and-tube reactor which is thermostated by means of a heat transfer medium is carried out so that the maximum temperature in the second catalyst zone in the flow direction is at least 52° C. lower than the maximum temperature in the first catalyst zone.The process of the present invention makes it possible to prepare phthalic anhydride in high yields under conditions relevant to industrial practice.

公开(公告)号：DE10026906A1

公开(公告)日：2001-12-06

申请号：DE10026906

申请日：2000-05-31

Applicant: BASF AG

Inventor： NEUMANN HANS-PETER ,  WALTER MARC ,  SCHULZ RALF ,  HEIDEMANN THOMAS

IPC: C07C2/08 ,  C07C2/10

Abstract: The invention relates to a method for shutting down a reactor used to oligomerize alkenes on a heterogeneous catalyst containing nickel. According to the inventive method, the amount of alkenes in the feed stream to the reactor is decreased by using a hydrocarbon flow which is substantially devoid of aromatic compounds. The amount of alkenes in the feed stream to the reactor is reduced to less than 10 % wt. % of the total feed stream so that the temperature of the catalyst does not exceed or does not substantially exceed the maximum temperature of the catalyst in a productive operational mode before the shut down occurs. The hydrocarbon flow which is substantially devoid of aromatic compounds and which is used partially or fully is the flow which is retained when the oligomer products are separated from the reactor discharge.

公开(公告)号：SK5822001A3

公开(公告)日：2001-10-08

申请号：SK5822001

申请日：1999-11-10

Applicant: BASF AG

Inventor： HEIDEMANN THOMAS ,  HIBST HARTMUT ,  BAUER STEFAN ,  DIETRICH ULF

IPC: C07D307/89 ,  B01J23/68 ,  B01J35/06 ,  B01J37/02 ,  C01G1/00 ,  C01G31/00 ,  C01G39/00 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31

Abstract: A multimetal oxide of the formula I Aga-bMbV2Ox*cH2O,  I where M is a metal selected from the group consisting of Li, Na, K, Rb, Cs, Tl, Mg, Ca, Sr, Ba, Cu, Zn, Cd, Pb, Cr, Au, Al, Fe, Co, Ni and/or Mo, a is from 0.3 to 1.9 and b is from 0 to 0.5, with the proviso that the difference (a−b)≧0.1 and c is from 0 to 20 and x is a number determined by the valence and amount of elements different from oxygen in the formula I, which has a crystal structure giving an X-ray powder diffraction pattern which displays reflections at the lattice spacings d of 15.23±0.6, 12.16±0.4, 10.68±0.3, 3.41±0.04, 3.09±0.04, 3.02±0.04, 2.36±0.04 and 1.80±0.04 Å. Precatalysts and catalysts produced therefrom for the partial oxidation of aromatic hydrocarbons are also provided.