Origin of the Robust Catalytic Performance of Nanodiamond Graphene-Supported Pt Nanoparticles Used in the Propane Dehydrogenation Reaction

被引：90
作者：
Liu, Jie [1 ,2 ]
Yue, Yuanyuan [1 ]
Liu, Hongyang [3 ]
Da, Zhijian [2 ]
Liu, Changcheng [2 ]
Ma, Aizeng [2 ]
Rong, Junfeng [2 ]
Su, Dangsheng [3 ]
Bao, Xiaojun [2 ]
Zheng, Huidong [2 ]
机构：
[1] Fuzhou Univ, Sch Chem Engn, 2 Xueyuan Rd, Fuzhou 350116, Peoples R China
[2] Sinopec, Res Inst Petr Proc, 18 Xueyuan Rd, Beijing 100083, Peoples R China
[3] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
来源：
ACS CATALYSIS | 2017年 / 7卷 / 05期
基金：
中国国家自然科学基金;
关键词：
electron transfer; metal-support interactions; graphene; stability; CO oxidation; CARBON NANOTUBES; CO OXIDATION; PLATINUM; EFFICIENT; SN; REDUCTION; SURFACES; CLUSTERS; OXIDES; PHASE;
D O I：
10.1021/acscatal.6b03452
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Nanocarbon-supported Pt nanoparticles (NPs) were prepared and tested for the propane dehydrogenation reaction (PDH). The nanocarbon support is composed of a nanodiamond core and a defective, ultrathin graphene nanoshell (ND@G). The Pt/ND@G catalyst experienced slight deactivation during the 100 h PDH test, while the Pt/Al2O3 catalyst showed severe deactivation after the 20 h PDH test. Pt NPs exhibited superior sintering resistance versus that of the ND@G support. This particular support structure of ND@G allows electrons on the defects to transfer to the Pt NPs, leading to a strong metal-support interaction, which significantly prevents Pt NP sintering and promotes the desorption of electron-rich propylene. This electron transfer mechanism was also confirmed by a CO catalytic oxidation test.
引用
收藏
页码：3349 / 3355
页数：7
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