Title:
METHOD FOR REGENERATING MOLYBDENUM-CONTAINING OXIDE FLUIDIZED-BED CATALYST
Document Type and Number:
WIPO Patent Application WO/1999/058241
Kind Code:
A1
Abstract:
A method for regenerating a metal oxide fluidized bed catalyst containing molybdenum, bismuth and iron, which has been deteriorated by the use in reaction in the production of acrylonitrile through ammoxidation of propylene, which method comprises impregnating the deteriorated oxide catalyst separately with a solution of a molybdenum compound and a solution of at least one compound containing at least one element selected from the group consisting of iron, chromium, lanthanum and cerium, or impregnating with a mixed solution of those compounds which has been prepared in advance, followed by drying, and calcinating the resulting catalyst at a temperature of 500 to 700 °C.
Inventors:
SASAKI YUTAKA (JP)
MORI KUNIO (JP)
NAKAMURA YOSHIMI (JP)
MORII AKIMITSU (JP)
MORI KUNIO (JP)
NAKAMURA YOSHIMI (JP)
MORII AKIMITSU (JP)
Application Number:
PCT/JP1999/002432
Publication Date:
November 18, 1999
Filing Date:
May 11, 1999
Export Citation:
Assignee:
MITSUBISHI RAYON CO (JP)
SASAKI YUTAKA (JP)
MORI KUNIO (JP)
NAKAMURA YOSHIMI (JP)
MORII AKIMITSU (JP)
SASAKI YUTAKA (JP)
MORI KUNIO (JP)
NAKAMURA YOSHIMI (JP)
MORII AKIMITSU (JP)
International Classes:
B01J23/92; B01J23/94; B01J23/88; B01J27/28; B01J27/30; B01J38/00; B01J38/48; B01J38/68; (IPC1-7): B01J23/94; B01J38/48
Foreign References:
| JPS5715842A | 1982-01-27 | |||
| JPH04227072A | 1992-08-17 |
Other References:
See also references of EP 1082997A4
Attorney, Agent or Firm:
Asamura, Kiyoshi (New Ohtemachi Building 2-1 Ohtemachi 2-chome Chiyoda-ku, Tokyo, JP)
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