METHOD FOR PRODUCING CATALYST FOR (METH)ACRYLIC ACID PRODUCTION AND METHOD FOR PRODUCING (METH)ACRYLIC ACID

WIPO Patent Application WO/2017/094468

A1

The purpose of the present invention is to provide a method for producing a catalyst that can reduce uneven quality in a catalyst molded body of a catalyst for (meth)acrylic acid production. Provided is a method for producing a catalyst for (meth)acrylic acid production, the method including: (1) a step of mixing a contactant of a catalyst component-containing catalyst precursor, a liquid and a binder so as to produce a mixture; (2) a step of molding the mixture so as to produce a molded body; and (3) a step of heat treating the molded body. In the period after producing the contactant in step (1) and before heat treating the molded body in step (3), at least one of the contactant, the mixture and the molded body is held for a total of 2 hours or more at a temperature of 10°C or higher, and if the liquid content in the mixture, which is calculated from the charged quantities in step (1), is denoted by α% and the liquid content in the mixture immediately before carrying out the molding in step (2) is denoted by β%, the rate of change in liquid content, as calculated using formula (I), is -10% to 10% inclusive. Formula (I): rate of change in liquid content (%) = (α-β)/α×100　

WATANABE TAKURO (JP)
SUGIYAMA MIEJI (JP)
MIYAKI KENICHI (JP)
TAGAWA YUUICHI (JP)
TAKEDA AKIO (JP)
KATOU YUUKI (JP)
SATOU YUUTA (JP)
HINO TOMOMICHI (JP)
TOYODA TAKAFUMI (JP)
TANAKA SHINGO (JP)

PCT/JP2016/083346

June 08, 2017

November 10, 2016

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MITSUBISHI RAYON CO (JP)

B01J27/199; B01J37/00; B01J37/04; C07C51/25; C07C57/055; C07B61/00

JP2011224482A	2011-11-10
JP2009213970A	2009-09-24
JP2010264358A	2010-11-25
JP2003201261A	2003-07-18
JP2003001113A	2003-01-07

MIYAZAKI, Teruo et al. (JP)

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