Title:
CATALYST, PRODUCTION METHOD FOR CATALYST, AND PRODUCTION METHOD FOR α,β-UNSATURATED ALDEHYDE AND/OR α,β-UNSATURATED CARBOXYLIC ACID USING SAME
Document Type and Number:
WIPO Patent Application WO/2023/145605
Kind Code:
A1
Abstract:
The main purpose of the present invention is to provide a catalyst that makes it possible to produce anα,β-unsaturated aldehyde and/or an α,β-unsaturated carboxylic acid with high selectivity. The catalyst is used in producing, via an oxidation reaction of a hydrocarbon, a corresponding α,β-unsaturated aldehyde and/or α,β-unsaturated carboxylic acid, said catalyst comprising molybdenum, bismuth, and cobalt and satisfying expression (I-1). Expression (I-1): (x2-x1)/σ1≤1.5 In expression (I-1), x1, x2, and σ1 are values obtained by binarizing into black and white a backscattered electron image of the catalyst obtained with a scanning electron microscope (SEM) at an acceleration voltage of 15 kV and then performing energy dispersive x-ray spectroscopy (EDS) analysis. x1 is the bismuth concentration [mass%] of black portions, x2 is the bismuth concentration [mass%] of white portions, and σ1 is the standard deviation of the bismuth concentration of black portions.
Inventors:
NISHIKI KENSUKE (JP)
WATANABE TAKURO (JP)
WATANABE TAKURO (JP)
Application Number:
PCT/JP2023/001539
Publication Date:
August 03, 2023
Filing Date:
January 19, 2023
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
C07C45/35; B01J23/887; B01J37/04; C07B61/00; C07C47/22; C07C51/25; C07C57/05
Domestic Patent References:
| WO2020203606A1 | 2020-10-08 |
Foreign References:
| JP2021192908A | 2021-12-23 | |||
| JP2007222855A | 2007-09-06 | |||
| JP2014031321A | 2014-02-20 |
Attorney, Agent or Firm:
IP FIRM SHUWA (JP)
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