CATALYST PRECURSOR AND METHOD FOR MANUFACTURING SAME, CATALYST MOLDED ARTICLE AND METHOD FOR MANUFACTURING SAME, METHOD FOR MANUFACTURING CATALYST, METHOD FOR MANUFACTURING α,β-UNSATURATED CARBOXYLIC ACID, AND METHOD FOR MANUFACTURING α,β-UNSATURATED CARBOXYLIC ACID ESTER

WIPO Patent Application WO/2024/048703

A1

Provided is a catalyst precursor with which it is possible to manufacture a catalyst having a high yield of an α,β-unsaturated carboxylic acid, or a catalyst molded article.　The abovementioned problem is solved by: a catalyst precursor that contains a Keggin-type heteropolyacid, the catalyst precursor being used when oxidizing an α,β-unsaturated aldehyde to manufacture an α,β-unsaturated carboxylic acid, wherein the pore volume of the catalyst precursor is 0.005-0.15 mL/g; or a catalyst molded article that contains a catalyst component including phosphorus, molybdenum, and vanadium, the catalyst molded article being used when oxidizing an α,β-unsaturated aldehyde to manufacture an α,β-unsaturated carboxylic acid, wherein the pore volume of the catalyst molded article is 0.01-0.40 mL/g, and in a pore distribution curve pertaining to the catalyst molded article, IB/IA is 0.160-0.420, where IA is the height of the highest peak (peak A) and IB is the height of the second-highest peak (peak B) where peaks are present in a pore-diameter range of 0.05-10 μm.

OKADA KENGO (JP)
KURIHARA YU (JP)
WATANABE TAKURO (JP)
KATO YUKI (JP)

PCT/JP2023/031706

March 07, 2024

August 31, 2023

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MITSUBISHI CHEM CORP (JP)

B01J27/199; B01J35/60; B01J37/00; B01J37/04; B01J37/08; C07B61/00; C07C51/235; C07C57/055; C07C67/08; C07C69/54

JP2017176932A	2017-10-05
JP2020157294A	2020-10-01
JPH081005A	1996-01-09
JP2014507500A	2014-03-27
JP2011140210A	2011-07-21

IP FIRM SHUWA (JP)

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