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Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions

文献类型：期刊论文

作者Liu, Shaofeng2,3,4; Qi, Haifeng2,4; Zhou, Junhui5; Xu, Wei6; Niu, Yiming7; Zhang, Bingsen7; Zhao, Yang2; Liu, Wei2; Ao, Zhimin5; Kuang, Zhichong2,4
刊名ACS CATALYSIS
出版日期2021-05-21
卷号11期号:10页码:6081-6090
关键词strong metal-support interaction (smsi) platinum group metals titania encapsulation oxidative atmosphere
ISSN号2155-5435
DOI10.1021/acscatal.1c01347
通讯作者Zhang, Bingsen(bszhang@imr.ac.cn) ; Ao, Zhimin(zhimin.ao@gdut.edu.cn) ; Wang, Junhu(wangjh@dicp.ac.cn)
英文摘要Classical strong metal-support interaction (SMSI) has attracted intensive attention in the heterogeneous catalysis field; however, its crystalline TiOx overlayer and reversible feature often curtail the effect of classical SMSI on enhancing the catalytic performance of supported metal catalysts in oxidation reactions, especially at elevated temperatures. Here, we report the evidence that Pt nanoparticles can be encapsulated by an amorphous and permeable TiOx cover layer in Pt/TiO2 catalysts under an oxidative atmosphere, where the keys are the utilization of melamine, followed by annealing in nitrogen flow and further calcination at 800 degrees C in air. More importantly, the formed overlayer is stabilized against re-oxidation at 400-600 degrees C in air, in sharp contrast to the retreat of the TiOx overlayer by subsequent oxidation treatment in classical SMSI. Such an extraordinary strategy is further demonstrated on titania-supported Pd and Rh nanoparticles, paving a promising way for designing supported platinum group metal-based catalysts with high activity and stability.
资助项目National Natural Science Foundation of China[21476232] ; National Natural Science Foundation of China[21777033] ; National Natural Science Foundation of China[21961142006] ; International Partnership Program of Chinese Academy of Sciences[121421KYSB20170020] ; State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics[N-16-07]
WOS研究方向Chemistry
语种英语
WOS记录号WOS:000656056200016
出版者AMER CHEMICAL SOC
资助机构National Natural Science Foundation of China ; International Partnership Program of Chinese Academy of Sciences ; State Key Laboratory of Catalysis in Dalian Institute of Chemical Physics
源URL[http://ir.imr.ac.cn/handle/321006/160358]  
专题金属研究所_中国科学院金属研究所
通讯作者Zhang, Bingsen; Ao, Zhimin; Wang, Junhu
作者单位1.Nagoya Univ, Dept Chem & Biotechnol, Sch Engn, Nagoya, Aichi 4648603, Japan
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Chinese Acad Sci, Mossbauer Effect Data Ctr, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
5.Guangdong Univ Technol, Sch Environm Sci & Engn, Guangzhou Key Lab Environm Catalysis & Pollut Con, Inst Environm Hlth & Pollut Control, Guangzhou 510080, Peoples R China
6.Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
7.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式
GB/T 7714		 Liu, Shaofeng,Qi, Haifeng,Zhou, Junhui,et al. Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions[J]. ACS CATALYSIS,2021,11(10):6081-6090.
APA Liu, Shaofeng.,Qi, Haifeng.,Zhou, Junhui.,Xu, Wei.,Niu, Yiming.,...&Wang, Junhu.(2021).Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions.ACS CATALYSIS,11(10),6081-6090.
MLA Liu, Shaofeng,et al."Encapsulation of Platinum by Titania under an Oxidative Atmosphere: Contrary to Classical Strong Metal-Support Interactions".ACS CATALYSIS 11.10(2021):6081-6090.

入库方式： OAI收割

来源：金属研究所

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