Realizing Selective and Aerobic Oxidation by Porous Transition-Metal-Salt@Ceria Catalyst

Pengfei Zhang; Hanfeng Lu; Shize Yang; Wangcheng Zhan; Wenshuai Zhu; Xueguang Jiang; Caili Huang; Sheng Dai

doi:10.1002/slct.201600351

Realizing Selective and Aerobic Oxidation by Porous Transition-Metal-Salt@Ceria Catalyst

Pengfei Zhang, Hanfeng Lu, Shize Yang, Wangcheng Zhan, Wenshuai Zhu, Xueguang Jiang, Caili Huang, Sheng Dai

Chemical Sciences Division

Research output: Contribution to journal › Article › peer-review

4 Scopus citations

Abstract

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@CeO₂) materials (up to 455 m²/g) were fabricated by a simple, general co-assembly strategy with ionic liquids as recyclable templates. The TMS@CeO₂ 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@CeO₂ catalyst showed much higher activity than a transition metal–doped cerium oxide solid solution. The TMS and CeO₂ are supposed to synergistically activate O₂ at the interface. It is believed that the abundant ceria-based materials will provide more efficient catalysts for controlled oxidation in the near future.

Original language	English
Pages (from-to)	1179-1183
Number of pages	5
Journal	ChemistrySelect
Volume	1
Issue number	6
DOIs	https://doi.org/10.1002/slct.201600351
State	Published - May 1 2016

Funding

P. F. Z. and S. D. were supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Chemical Sciences, Geosciences, and Biosciences Division. The electron microscopy at ORNL was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, Materials Sciences and Engineering Division and performed in part as a user project at the ORNL Center for Nanophase Materials Sciences, which is a DOE Office of the Science User Facility.

Funders	Funder number
DOE Office of the Science User Facility
ORNL Center for Nanophase Materials Sciences
U.S. Department of Energy
Office of Science
Basic Energy Sciences
Oak Ridge National Laboratory
Chemical Sciences, Geosciences, and Biosciences Division

Keywords

Ceria Catalyst
Ionic Liquids
Mesoporous Materials
Oxidation
Template Synthesis

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10.1002/slct.201600351

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title = "Realizing Selective and Aerobic Oxidation by Porous Transition-Metal-Salt@Ceria Catalyst",

abstract = "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@CeO2) materials (up to 455 m2/g) were fabricated by a simple, general co-assembly strategy with ionic liquids as recyclable templates. The TMS@CeO2 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@CeO2 catalyst showed much higher activity than a transition metal–doped cerium oxide solid solution. The TMS and CeO2 are supposed to synergistically activate O2 at the interface. It is believed that the abundant ceria-based materials will provide more efficient catalysts for controlled oxidation in the near future.",

keywords = "Ceria Catalyst, Ionic Liquids, Mesoporous Materials, Oxidation, Template Synthesis",

author = "Pengfei Zhang and Hanfeng Lu and Shize Yang and Wangcheng Zhan and Wenshuai Zhu and Xueguang Jiang and Caili Huang and Sheng Dai",

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AU - Zhan, Wangcheng

AU - Zhu, Wenshuai

AU - Jiang, Xueguang

AU - Huang, Caili

AU - Dai, Sheng

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N2 - 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@CeO2) materials (up to 455 m2/g) were fabricated by a simple, general co-assembly strategy with ionic liquids as recyclable templates. The TMS@CeO2 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@CeO2 catalyst showed much higher activity than a transition metal–doped cerium oxide solid solution. The TMS and CeO2 are supposed to synergistically activate O2 at the interface. It is believed that the abundant ceria-based materials will provide more efficient catalysts for controlled oxidation in the near future.

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KW - Template Synthesis

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Realizing Selective and Aerobic Oxidation by Porous Transition-Metal-Salt@Ceria Catalyst

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