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Realizing Selective and Aerobic Oxidation by Porous Transition‐Metal‐Salt@Ceria Catalyst
Author(s) -
Zhang Pengfei,
Lu Hanfeng,
Yang Shize,
Zhan Wangcheng,
Zhu Wenshuai,
Jiang Xueguang,
Huang Caili,
Dai Sheng
Publication year - 2016
Publication title -
chemistryselect
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.437
H-Index - 34
ISSN - 2365-6549
DOI - 10.1002/slct.201600351
Subject(s) - catalysis , cerium , transition metal , cerium oxide , materials science , oxide , inorganic chemistry , salt (chemistry) , porosity , template , chemical engineering , metal , redox , chemistry , nanotechnology , organic chemistry , metallurgy , engineering , composite material
In the past decades, ceria‐based materials have been well developed as catalysts for complete oxidation; however, only a very few studies have involved ceria‐promoted selective oxidations. Herein, porous transition‐metal‐salt–doped ceria (TMS@CeO 2 ) materials (up to 455 m 2 /g) were fabricated by a simple, general co‐assembly strategy with ionic liquids as recyclable templates. The TMS@CeO 2 catalyst was found to be active in the selective oxidation of sulfides to sulfoxides/sulfones by molecular oxygen. It is interesting that the TMS doping significantly increases the catalytic performance of the original ceria catalyst and, surprisingly, the TMS@CeO 2 catalyst showed much higher activity than a transition metal–doped cerium oxide solid solution. The TMS and CeO 2 are supposed to synergistically activate O 2 at the interface. It is believed that the abundant ceria‐based materials will provide more efficient catalysts for controlled oxidation in the near future.