Title:
【発明の名称】C-原子数4の炭化水素を気相酸化して無水マレイン酸にするためのシェル型触媒、その製法及びC-原子数4の炭化水素の気相酸化法
Document Type and Number:
Japanese Patent JP3009646
Kind Code:
B2
Abstract:
There is a process for producing coated catalysts for the gas-phase oxidation of C4 hydrocarbons to maleic anhydride. A vanadyl phosphate catalyst precursor is prepared having a V/P ratio of from 1:0.5 to 1:2 and a mean vanadium oxidation state of from 3.9 to 4.5. The vanadyl phosphate precursor is then calcined by heating for a several hours at a temperature of from 200 DEG C. to 500 DEG C. before being applied, in an aqueous suspension to the support bodies. Furthermore, there is the use of these coated catalysts in processes for the gas-phase oxidation of saturated or unsaturated C4-hydrocarbons to maleic anhydride.
Inventors:
Dirk Groke
Christoph Rüdinger
Hans-Jürgen Eberle
Richard Bosch
Reinhard Wheeling
Christoph Rüdinger
Hans-Jürgen Eberle
Richard Bosch
Reinhard Wheeling
Application Number:
JP17873898A
Publication Date:
February 14, 2000
Filing Date:
June 25, 1998
Export Citation:
Assignee:
Consortium Fuyuru Electro Chemistry Industrie Geselsyaft Mitsubeshiyu Renktel Haftsung
International Classes:
B01J27/198; B01J37/02; C07B61/00; C07C51/215; C07D307/60; C07C57/145; (IPC1-7): B01J27/198; B01J37/08; C07D307/60
Domestic Patent References:
| JP5836635A | ||||
| JP539713A | ||||
| JP10167711A |
Attorney, Agent or Firm:
Toshio Yano (3 outside)