Title:
METHOD FOR PRODUCING CATALYST FOR METHACRYLIC ACID PRODUCTION, METHOD FOR PRODUCING METHACRYLIC ACID AND METHOD FOR PRODUCING METHACRYLIC ACID ESTER
Document Type and Number:
WIPO Patent Application WO/2018/037998
Kind Code:
A1
Abstract:
Provided is a catalyst for methacrylic acid production, which has high methacrylic acid yield. A method for producing a catalyst for methacrylic acid production, which comprises: (1) a step for preparing a catalyst starting material liquid A that contains Mo, P and V; (2) a step for preparing a catalyst starting material liquid B that contains a cationic starting material; and (3) a step for preparing a liquid that contains a heteropolyacid having a Keggin-type structure or a salt of the heteropolyacid by adding one of the catalyst starting material liquid A and the catalyst starting material liquid B to the other and mixing together. In the step (3), formulae (i) and (ii) are satisfied.
3.0 ≤ T/(3√V) ≤ 13.0 (i)
0.01 ≤ u1 ≤ 1.0 (ii)
(In formulae (i) and (ii), V represents the volume [m3] of the catalyst starting material liquid A; T represents the number of addition ports through which the other liquid is added; u1 represents the volumetric flow rate [L/minute] of the other liquid added; and u1 represents the average in cases where T is 2 or more.)
Inventors:
KATO YUKI (JP)
TAGAWA YUICHI (JP)
TAGAWA YUICHI (JP)
Application Number:
PCT/JP2017/029556
Publication Date:
March 01, 2018
Filing Date:
August 17, 2017
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
B01J37/04; B01J27/199
Domestic Patent References:
| WO2005039760A1 | 2005-05-06 | |||
| WO2015037611A1 | 2015-03-19 |
Foreign References:
| JP2007098345A | 2007-04-19 | |||
| JP2010162460A | 2010-07-29 | |||
| JP2014226614A | 2014-12-08 |
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (JP)
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