Title:
無水マレイン酸を製造するための触媒及び方法
Document Type and Number:
Japanese Patent JP2004512167
Kind Code:
A
Abstract:
A vanadium-, phosphorus- and oxygen-containing catalyst for the preparation of maleic anhydride by heterogeneously catalyzed gas-phase oxidation of a hydrocarbon of at least four carbon atoms has a phosphorus/vanadium ratio of from 0.9 to 1.5, comprises particles having a mean diameter of at least 2 mm and has a composition which, using CuKalpha radiation (lambda=1.54.10-<10 >m), gives a powder X-ray diffraction pattern which, in the 2theta range from 10° to 70°, has a signal/background ratio of <=10 for all diffraction lines which are attributable to a vanadium- and phosphorus-containing phase. Said catalyst is prepared and is used for the preparation of maleic anhydride.
Inventors:
Zebastian sterk
Jens Vigny
Mark Duda
Gerhard Cox
Jens Vigny
Mark Duda
Gerhard Cox
Application Number:
JP2002537428A
Publication Date:
April 22, 2004
Filing Date:
October 26, 2001
Export Citation:
Assignee:
BASF Aktiengesellschaft
International Classes:
C07D307/60; B01J27/198; B01J35/02; B01J37/08; C07B61/00; C07C51/215; (IPC1-7): B01J27/198; C07D307/60
Attorney, Agent or Firm:
Toshio Yano
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel
Toshiomi Yamazaki
Takuya Kuno
Einzel Felix-Reinhard
Reinhard Einsel