Title:
CATALYST AND PROCESS FOR PRODUCING ETHYLENICALLY UNSATURATED CARBOXYLIC ACIDS OR ESTERS
Document Type and Number:
Japanese Patent JP2023153789
Kind Code:
A
Abstract:
To provide a modified silica support used as a catalyst for producing ethylenically unsaturated carboxylic acids or esters, and to provide a method for producing the same.SOLUTION: In a modified silica support for a catalyst comprising a silica support and a modifier metal wherein the modifier metal is selected from at least one of zirconium and hafnium, at least a proportion of the modifier metal is present as monomeric and/or dimeric metal oxide residues or is derived from a monomeric and/or dimeric modifier metal cation source at the commencement of the modification. At least 25% of the modifier metal is present as monomeric and/or dimeric metal oxide residues or is derived from a monomeric and/or dimeric modifier metal cation source at the commencement of the modification.SELECTED DRAWING: None
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Inventors:
ADAM CULLEN
DAVID WILLIAM JOHNSON
IAN ANDREW YORK
DAVID WILLIAM JOHNSON
IAN ANDREW YORK
Application Number:
JP2023113389A
Publication Date:
October 18, 2023
Filing Date:
July 11, 2023
Export Citation:
Assignee:
MITSUBISHI CHEM UK LTD
International Classes:
B01J23/04; B01J32/00; B01J37/02; B01J37/08
Attorney, Agent or Firm:
Makoto Onda
Hironobu Onda
Atsushi Honda
Miki Nakamura
Hironobu Onda
Atsushi Honda
Miki Nakamura
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