Title:
CATALYST FOR PRODUCTION OF METHACRYLIC ACID, CATALYST PRECURSOR FOR PRODUCTION OF METHACRYLIC ACID, METHOD FOR PRODUCING SAID CATALYST AND CATALYST PRECURSOR, METHOD FOR PRODUCING METHACRYLIC ACID, AND METHOD FOR PRODUCING METHACRYLATE ESTER
Document Type and Number:
WIPO Patent Application WO/2018/150797
Kind Code:
A1
Abstract:
Provided is a catalyst that can produce methacrylic acid at high selectivities by the gas-phase catalytic oxidation of methacrolein. The catalyst is a catalyst for production of methacrylic acid which is used for the production of methacrylic acid by the gas-phase catalytic oxidation of methacrolein using molecular oxygen and has the following composition.
PaMobVcNbdCueAfEgGh(NH4)iOj
(A represents at least one of Si, Ge, As, and Sb; E represents at least one of Bi, Zr, Te, Ag, Se, W, B, Fe, Zn, Cr, Mg, Ca, Sr, Ta, Co, Ni, Mn, Ba, Ti, Sn, Pb, In, S, Pd, Ga, Ce, and La; and G represents at least one of Li, Na, K, Rb, Cs, and Tl. The following are satisfied for b = 12: 0.5 ≤ a + f ≤ 2.1, 0.01 ≤ c + d ≤ 3, 0.5 ≤ a, 0 ≤ c, 0.01 ≤ d ≤ 3, 0.005 ≤ e ≤ 3, 0 ≤ f, 0 ≤ g ≤ 3, 0.01 ≤ h ≤ 3, and 0 ≤ i ≤ 5, and j is the molar ratio for oxygen that satisfies the valences of the individual components.)
Inventors:
HIRATA JUN (JP)
Application Number:
PCT/JP2018/001397
Publication Date:
August 23, 2018
Filing Date:
January 18, 2018
Export Citation:
Assignee:
MITSUBISHI CHEM CORP (JP)
International Classes:
B01J27/199; B01J27/195; B01J37/03; C07C51/25; C07C57/055; C07B61/00
Domestic Patent References:
| WO2016002649A1 | 2016-01-07 |
Foreign References:
| JPH0242033A | 1990-02-13 | |||
| JPH11179209A | 1999-07-06 | |||
| JP2013192989A | 2013-09-30 | |||
| JP2014161776A | 2014-09-08 | |||
| JP2012102129A | 2012-05-31 | |||
| JP2013203668A | 2013-10-07 | |||
| JP2006314923A | 2006-11-24 | |||
| JPS55105641A | 1980-08-13 |
Other References:
NINOMIYA, WATARU: "Industrialised polyoxometalate catalyst: heteropolyacid catalyst for selective oxidation of methacrolein to methacrylic acid", CATALYST, December 2014 (2014-12-01), pages 360 - 366
Attorney, Agent or Firm:
MIYAZAKI Teruo et al. (JP)
Download PDF:
Previous Patent: HEAT MEDIUM HEATING APPARATUS AND VEHICLE AIR CONDITIONING APPARATUS
Next Patent: MODEL ESTIMATION SYSTEM, METHOD, AND PROGRAM
Next Patent: MODEL ESTIMATION SYSTEM, METHOD, AND PROGRAM