Title:
OXYGEN STORAGE MATERIAL, CATALYST FOR PURIFICATION OF EXHAUST GAS, AND METHOD FOR PRODUCING OXYGEN STORAGE MATERIAL
Document Type and Number:
WIPO Patent Application WO/2023/047459
Kind Code:
A1
Abstract:
This oxygen storage material has a chemical composition that is represented by Ce1-xZrxO2-δ (0.45 ≤ x ≤ 0.65, 0 ≤ δ), has, in the vicinity of 14.5° in an XRD pattern, a peak that belongs to a cubic pyrochlore-like structure (κ phase), and has a specific surface area of not less than 0.5 [m2/g].
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Inventors:
TAKAMURA HITOSHI (JP)
MURAKAMI KAZUTO (JP)
MURAKAMI KAZUTO (JP)
Application Number:
PCT/JP2021/034566
Publication Date:
March 30, 2023
Filing Date:
September 21, 2021
Export Citation:
Assignee:
UNIV TOHOKU (JP)
International Classes:
B01J35/10; B01J23/83; B01J37/18
Foreign References:
| JP2005170774A | 2005-06-30 | |||
| JP2015080736A | 2015-04-27 | |||
| JP2013241328A | 2013-12-05 | |||
| JP2005231951A | 2005-09-02 |
Other References:
DING YUANQING; WANG ZHENG; GUO YANGLONG; GUO YUN; WANG LI; ZHAN WANGCHENG: "A novel method for the synthesis of CexZr1-xO2solid solution with high purity of κappa phase and excellent reactive activity", CATALYSIS TODAY, ELSEVIER, AMSTERDAM, NL, vol. 327, 22 April 2018 (2018-04-22), AMSTERDAM, NL , pages 262 - 270, XP085612357, ISSN: 0920-5861, DOI: 10.1016/j.cattod.2018.04.040
GU ZHENHUA, SANG XIULI, WANG HUA, LI KONGZHAI: "Structure and catalytic property of CeO2-ZrO2-Fe2O3 mixed oxide catalysts for diesel soot combustion: Effect of preparation method", JOURNAL OF RARE EARTHS, ELSEVIER, AMSTERDAM, NL, vol. 32, no. 9, 1 September 2014 (2014-09-01), AMSTERDAM, NL, pages 817 - 823, XP093053511, ISSN: 1002-0721, DOI: 10.1016/S1002-0721(14)60147-2
ANEGGI, E. DE LEITENBURG, C. DOLCETTI, G. TROVARELLI, A.: "Promotional effect of rare earths and transition metals in the combustion of diesel soot over CeO"2 and CeO"2-ZrO"2", CATALYSIS TODAY, ELSEVIER, AMSTERDAM, NL, vol. 114, no. 1, 30 April 2006 (2006-04-30), AMSTERDAM, NL , pages 40 - 47, XP005367433, ISSN: 0920-5861, DOI: 10.1016/j.cattod.2006.02.008
GU ZHENHUA, SANG XIULI, WANG HUA, LI KONGZHAI: "Structure and catalytic property of CeO2-ZrO2-Fe2O3 mixed oxide catalysts for diesel soot combustion: Effect of preparation method", JOURNAL OF RARE EARTHS, ELSEVIER, AMSTERDAM, NL, vol. 32, no. 9, 1 September 2014 (2014-09-01), AMSTERDAM, NL, pages 817 - 823, XP093053511, ISSN: 1002-0721, DOI: 10.1016/S1002-0721(14)60147-2
ANEGGI, E. DE LEITENBURG, C. DOLCETTI, G. TROVARELLI, A.: "Promotional effect of rare earths and transition metals in the combustion of diesel soot over CeO"2 and CeO"2-ZrO"2", CATALYSIS TODAY, ELSEVIER, AMSTERDAM, NL, vol. 114, no. 1, 30 April 2006 (2006-04-30), AMSTERDAM, NL , pages 40 - 47, XP005367433, ISSN: 0920-5861, DOI: 10.1016/j.cattod.2006.02.008
Attorney, Agent or Firm:
TANAI Sumio et al. (JP)
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