Title:
AMMONIA SYNTHESIS CATALYST
Document Type and Number:
WIPO Patent Application WO/2021/153738
Kind Code:
A1
Abstract:
The present invention is a composite oxide which comprises an oxide of a metal element L and an oxide of a metal element N, has a composition represented by general formula (1), and has the properties (a) to (d). LnN1-n (1)
(a) The metal element L comprises (i) a Group-1 element, (ii) a Group-2 element, or (iii) a Group-1 element and a Group-2 element; (b) the metal element N comprises a Group-1 or Group-2 element other than the metal element L; (c) n is 0.001 to 0.300 inclusive; and (d) the oxide of the metal element L and the oxide of the metal element N do not form a solid solution, and particles of the oxide of the metal element L are deposited on the surfaces of particles of the oxide of the metal element N. The present invention also provides: a metal-supported product in which particles M of at least one metal selected from the group consisting of cobalt, iron and nickel are supported on the composite oxide; and an ammonia synthesis catalyst.
Inventors:
NAGAOKA KATSUTOSHI (JP)
OGURA YUTA (JP)
SATO KATSUTOSHI (JP)
MIYAHARA SHIN-ICHIRO (JP)
OGURA YUTA (JP)
SATO KATSUTOSHI (JP)
MIYAHARA SHIN-ICHIRO (JP)
Application Number:
PCT/JP2021/003257
Publication Date:
August 05, 2021
Filing Date:
January 29, 2021
Export Citation:
Assignee:
JAPAN SCIENCE & TECH AGENCY (JP)
International Classes:
C01F11/02; B01J32/00; B01J37/02; C01C1/04
Domestic Patent References:
| WO2016133213A1 | 2016-08-25 | |||
| WO2019059190A1 | 2019-03-28 | |||
| WO2019216304A1 | 2019-11-14 |
Foreign References:
| JP2000084405A | 2000-03-28 | |||
| CN104239217A | 2014-12-24 | |||
| JPH0679177A | 1994-03-22 | |||
| JP2013111562A | 2013-06-10 | |||
| JP2017018907A | 2017-01-26 |
Other References:
Y. NIWAK. AIKA, CHEMISTRY LETTERS, 1996, pages 3 - 4
X. LUO ET AL., CATALYSIS LETTERS, vol. 133, 2009, pages 382
A.S.IVANOVA ET AL., KINETICS AND CATALYSIS, vol. 45, no. 4, 2004, pages 541 - 546
KINETIKA I KATALIZ, vol. 45, no. 4, 2004, pages 574 - 579
Y. OGURA ET AL.: "Efficient ammonia synthesis over a Ru/LaO,5CeO.501.75 catalyst prereduced at high temperature", CHEMICAL SCIENCE, vol. 9, pages 2230 - 2237
M.KITANO ET AL., ANGEW. CHEM.
INT. ED., vol. 130, 2018, pages 2678
W. GAO, ACS CATAL., vol. 7, 2017, pages 3654
F. ROSOWSKIA. HORNUNG0. HINRICHSEND. HEREINM. MUHLERG. ERTL, APPL. CATAL., A, vol. 151, 1997, pages 443 - 460
See also references of EP 4098618A4
X. LUO ET AL., CATALYSIS LETTERS, vol. 133, 2009, pages 382
A.S.IVANOVA ET AL., KINETICS AND CATALYSIS, vol. 45, no. 4, 2004, pages 541 - 546
KINETIKA I KATALIZ, vol. 45, no. 4, 2004, pages 574 - 579
Y. OGURA ET AL.: "Efficient ammonia synthesis over a Ru/LaO,5CeO.501.75 catalyst prereduced at high temperature", CHEMICAL SCIENCE, vol. 9, pages 2230 - 2237
M.KITANO ET AL., ANGEW. CHEM.
INT. ED., vol. 130, 2018, pages 2678
W. GAO, ACS CATAL., vol. 7, 2017, pages 3654
F. ROSOWSKIA. HORNUNG0. HINRICHSEND. HEREINM. MUHLERG. ERTL, APPL. CATAL., A, vol. 151, 1997, pages 443 - 460
See also references of EP 4098618A4
Attorney, Agent or Firm:
KISARAGI ASSOCIATES (JP)
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