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Title:
METHOD FOR PREPARING DECOMPOSITION CATALYST FOR ORGANIC HALIDE AND METHOD FOR MANUFACTURING FILTER FOR USE IN DECOMPOSING ORGANIC HALIDE
Document Type and Number:
WIPO Patent Application WO/2001/080993
Kind Code:
A1
Abstract:
A method for preparing a decomposition catalyst for an organic halide, which comprises reacting a salt of Pt and/or Pd, an alkoxide derivative of Ti and an amino acid as an organic binding compound in a solvent, to synthesize an organic metal-containing precursor containing Ti and Pt and/or Pd in a molecule thereof, and heating the precursor to prepare the decomposition catalyst comprising fine particles of Pt and/or Pd dispersed in TiO¿2?; and a method for manufacturing a filter for use in decomposing an organic halide, wherein the above decomposition catalyst is carried on the surface of the clean side of a ceramic filter. The method allows the uniform dispersion of fine particles of Pt and/or Pd in TiO¿2? particles, which results in the increase of active sites of the resultant catalyst, leading to a higher activity of the catalyst than that of a conventional catalyst. As a result, the catalyst exhibits excellent decomposition activity even at a temperature lower than 200°C.

Inventors:
TOKURA KATSUHIRO (JP)
OSHITA KAZUYUKI (JP)
Application Number:
PCT/JP2001/003172
Publication Date:
November 01, 2001
Filing Date:
April 12, 2001
Export Citation:
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Assignee:
NGK INSULATORS LTD (JP)
TOKURA KATSUHIRO (JP)
OSHITA KAZUYUKI (JP)
International Classes:
B01D53/86; B01J23/42; B01J23/44; (IPC1-7): B01J23/42; B01J23/44; B01D53/86
Foreign References:
JPH11347407A1999-12-21
JPH05261284A1993-10-12
JPH0235914A1990-02-06
Other References:
See also references of EP 1205242A4
Attorney, Agent or Firm:
Sugimura, Kosaku (2-4 Kasumigaseki 3-chome Chiyoda-ku, Tokyo, JP)
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