公开(公告)号：CA996533A

公开(公告)日：1976-09-07

申请号：CA166595

申请日：1973-03-16

Applicant: BASF AG

Inventor： REUTER PETER ,  WIRTH FRIEDRICH

IPC: C07D307/60 ,  B01J23/22 ,  B01J27/198 ,  B01J37/02 ,  C07B31/00 ,  C07B33/00 ,  C07B61/00 ,  C07C46/04 ,  C07C51/00 ,  C07C51/25 ,  C07C51/265 ,  C07C51/31 ,  C07C63/38 ,  C07C67/00 ,  C07D307/89

Abstract: A catalyst for the oxidation of aromatic or unsaturated aliphatic hydrocarbons which contains in the active material from 60 to 99 percent by weight of titanium dioxide and/or zirconium dioxide, from 1 to 40 percent by weight of vanadium pentoxide and up to 6 percent by weight of combined phosphorus, and which contains from 0 to 0.3 percent by weight of phosphorus in the outer layer and more than 0.3 percent up to 6 percent by weight of phosphorus in the remaining catalytic material.

公开(公告)号：AT302178T

公开(公告)日：2005-09-15

申请号：AT00958412

申请日：2000-08-10

Applicant: BASF AG

Inventor： PESCHEL WERNER ,  BESSLING BERND ,  REUTER PETER ,  LORZ PETER MICHAEL ,  ULRICH BERNHARD ,  KNAB JEAN WERNER ,  KUMMER MATTHIAS ,  RUEHL THOMAS

IPC: B01D3/00 ,  B01D3/10 ,  B01D3/14 ,  C07C51/573 ,  C07C63/16 ,  C07D307/89

Abstract: On-spec phthalic anhydride is prepared by distillative purification of crude phthalic anhydride by a process in which crude phthalic anhydride is fed to a distillation column which is operated at reduced pressure, the low boilers are removed at the top or in the vicinity of the top of the distillation column and the on-spec phthalic anhydride is removed from the column via a side take-off.

公开(公告)号：MX220474B

公开(公告)日：2004-05-20

申请号：MXPA01009012

申请日：2001-09-06

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  CORR FRANZ ,  REUTER PETER ,  WAMBACH LUDWIG ,  HAMMON ULRICH

IPC: B01J8/06 ,  B01J19/00 ,  B01J19/24 ,  C07C45/35 ,  C07C45/38 ,  H01Q21/08

Abstract: A multitube fixed bed reactor and the use of such a reactor for carrying out catalytic gas-phase reactions, in particular for carrying out exothermic and endothermic catalytic gas-phase reactions such as the preparation of phthalic anhydride (PA), acrylic acid, methacrylic acid (MAA), acrolein, maleic anhydride (MA), glyoxal, phosgene, hydrocyanic acid or vinyl formamide (VFA). In a relatively large multitube reactor in which a large amount of heat of reaction is generated owing to the numerous catalyst tubes ( 17 ) and has to be removed, it is proposed that the ratio of tube spacing t to external tube diameter d a be made dependent on the reactor diameter or on the external tube bundle diameter d RBa . At an external diameter of the catalyst tube bundle ( 18 ) of more than 4 meters, a ratio of tube spacing d to external tube diameter d a of at least 1.3 is preferred.

公开(公告)号：AT251944T

公开(公告)日：2003-11-15

申请号：AT00926738

申请日：2000-03-15

Applicant: BASF AG

Inventor： OLBERT GERHARD ,  CORR FRANZ ,  REUTER PETER ,  WAMBACH LUDWIG ,  HAMMON ULRICH

IPC: B01J8/06 ,  B01J19/00 ,  B01J19/24 ,  C07C45/35 ,  C07C45/38 ,  H01Q21/08

Abstract: A multitube fixed bed reactor and the use of such a reactor for carrying out catalytic gas-phase reactions, in particular for carrying out exothermic and endothermic catalytic gas-phase reactions such as the preparation of phthalic anhydride (PA), acrylic acid, methacrylic acid (MAA), acrolein, maleic anhydride (MA), glyoxal, phosgene, hydrocyanic acid or vinyl formamide (VFA). In a relatively large multitube reactor in which a large amount of heat of reaction is generated owing to the numerous catalyst tubes ( 17 ) and has to be removed, it is proposed that the ratio of tube spacing t to external tube diameter d a be made dependent on the reactor diameter or on the external tube bundle diameter d RBa . At an external diameter of the catalyst tube bundle ( 18 ) of more than 4 meters, a ratio of tube spacing d to external tube diameter d a of at least 1.3 is preferred.

公开(公告)号：DE19854892A1

公开(公告)日：2000-05-31

申请号：DE19854892

申请日：1998-11-27

Applicant: BASF AG

Inventor： REUTER PETER ,  VOIT GUIDO

IPC: C07C51/265 ,  C07D307/89

Abstract: A gas stream containing less than 200 ppm N-acyl compounds (NAc) (based on the weight of o-xylene) is used in a process for the production of phthalic anhydride by the gas-phase oxidation of technical o-xylene in a gas stream containing o-xylene, oxygen and sulfur dioxide at elevated temperature on a heavy metal-containing catalyst.

公开(公告)号：FI865079A0

公开(公告)日：1986-12-12

申请号：FI865079

申请日：1986-12-12

Applicant: BASF AG

Inventor： EICHHORN HANS-DIETER ,  MENGER VOLKMAR ,  REUTER PETER ,  SCHMIDT JOHANNES E ,  SCHWARZMANN MATTHIAS

IPC: C07C51/265 ,  C07D

公开(公告)号：CA1074288A

公开(公告)日：1980-03-25

申请号：CA263153

申请日：1976-10-12

Applicant: BASF AG

Inventor： BLECHSCHMITT KURT ,  REUTER PETER ,  WIRTH FRIEDRICH

IPC: C07D307/89 ,  B01J23/22 ,  B01J35/02 ,  B01J37/02 ,  C07B61/00 ,  C07C51/265 ,  C07C51/31 ,  B01J23/00 ,  B01J21/06

Abstract: A supported catalyst for the oxidation of aromatic or unsaturated aliphatic hydrocarbons, comprising an inert nonporous carrier to which is applied a thin layer of a catalytic composition which contains from 1 to 39.9 per cent by weight of vanadium pentoxide, from 60 to 98.9 per cent by weight of titanium dioxide and from 0.1 to 10% by weight of rubidium and antimony in an atomic ratio Rb : Sb of from 1:2.5 to 1:30, the vanadium pentoxide content being from 0.05 to 4 per cent by weight, based on the supported catalyst.

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.