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Title:
NANOCATALYST FOR OXIDATION HAVING MESOPOROUS CERIA SHELL AND METHOD FOR COMPLETE OXIDATION OF CARBON MONOXIDE AND HYDROCARBON USING SAME
Document Type and Number:
WIPO Patent Application WO/2018/097550
Kind Code:
A3
Abstract:
The present invention relates to a nanocatalyst for oxidation having a mesoporous ceria shell, and to a method for complete oxidation of carbon monoxide and hydrocarbon using the same. More specifically, the present invention relates to a nanocatalyst for oxidation, and to a method for complete oxidation of carbon monoxide and hydrocarbon using the same, the nanocatalyst having a core-shell structure in which a ceria shell having mesopores surrounds a core obtained by immobilizing precious metal nano-particles on spherical nano-particles. This nanoparticle catalyst having a mesoporous ceria shell according to the present invention has an advantage in that an excellent conversion rate is exhibited during the complete oxidation of carbon monoxide and hydrocarbon compared to a conventional catalyst having a shell such as mesoporous silica. In addition, there is an advantage in that, unlike a catalyst using a general ceria carrier, high activity is maintained even after firing.

Inventors:
LEE KWAN YOUNG (KR)
SEO MYUNG-GI (KR)
LEE MIN-WOO (KR)
JO DEOK-YEON (KR)
CHOUNG JIN WOO (KR)
KIM CHANG HWAN (KR)
Application Number:
PCT/KR2017/013149
Publication Date:
August 09, 2018
Filing Date:
November 20, 2017
Export Citation:
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Assignee:
UNIV KOREA RES & BUS FOUND (KR)
HYUNDAI MOTORS CENTRAL RES INSTITUTE (KR)
KIA MOTORS CORP (KR)
International Classes:
B01J35/00; B01J23/42; B01J23/44; B01J23/52; B01J35/02; B01J37/02
Foreign References:
KR20120117252A2012-10-24
Other References:
NAKATSUKA, K.: "Hydrophobic Modification of Pd/SiO2@Single-Site Mesoporous Silicas by Triethoxyfluorosilane: Enhanced Catalytic Activity and Selectivity for One-Pot Oxidation", CHEM. EUR. J., vol. 20, no. 27, 12 June 2014 (2014-06-12), pages 8348 - 8354, XP055534910
WANG, X.: "gamma-A1203 supported Pd@Ce02 core@shell nanospheres: salting-out assisted growth and selfassembly, and their catalytic performance in CO oxidation", CHEMICAL SCIENCE, vol. 6, no. 5, 27 February 2015 (2015-02-27), pages 2877 - 2884, XP055534919
CHEN, C.: "A Multi-Yolk-Shell Structured Nanocatalyst Containing Sub-10 nm Pd Nanoparticles in Porous Ce02", CHEMCATCHEM, vol. 4, no. 10, 2012, pages 1578 - 1586, XP055534923
MUTO, K.-I.: "Complete oxidation of methane on supported palladium catalyst: Support effect", APPLIED CATALYSIS A: GENERAL, vol. 134, no. 2, 18 January 1996 (1996-01-18), pages 203 - 215, XP055534926
CARGNELLO, M.: "Synthesis of Dispersible Pd@Ce02 Core-Shell Nanostructures by Self-Assembly", J. AM. CHEM. SOC., vol. 132, no. 4, 31 December 2009 (2009-12-31), pages 1402 - 1409, XP055534928
LEE, M. W.: "Sinter-resistant Si02@Pd@Ce02 nano-composite catalyst for C3H6 oxidation", 19 October 2016 (2016-10-19)
Attorney, Agent or Firm:
GHONG-GAN INTERNATIONAL PATENT LAW FIRM (KR)
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