Tuning P-dAu Bimetallic Catalysts for Heterogeneous Parahydrogen-Induced Polarization

doi:10.1021/acs.jpcc.7b11801

	Tuning P-dAu Bimetallic Catalysts for Heterogeneous Parahydrogen-Induced Polarization
	Wang, Weiyu; Hu, Han; Xu, Jun; Wang, Qiang; Qi, Guodong; Wang, Chao; Zhao, Xingling; Zhou, Xue; Deng, Feng
刊名	JOURNAL OF PHYSICAL CHEMISTRY C
	2018-01-18
卷号	122 期号:2 页码:1248-1257
ISSN号	1932-7447
DOI	10.1021/acs.jpcc.7b11801
文献子类	Article
英文摘要	The heterogeneous hydrogenation of propene over supported Pd-Au bimetallic nanoparticles was investigated using NMR and the parahydrogen-induced polarization (PHIP) technique. The composition and structure of Pd-Au/TiO2 catalysts were correlated to both catalytic activity and pairwise hydrogen addition. Sol-immobilization, impregnation, and deposition precipitation methods were used for preparation of the Pd-Au bimetallic catalysts. A strong signal enhancement was observed on the bimetallic catalyst prepared through the sol-immobilization method, up to 24-fold higher than that with the other two methods. The polyvinyl alcohol (PVA) stabilizer bound to the metal surface was responsible for the enhanced PHIP effect. The removal of the PVA ligands by water washing and calcination treatments shows a significant effect on the hydrogen pairwise addition. Increasing the Au content in the bimetallic alloy led to a promotion of the pairwise selectivity due to the ensemble effect. The pairwise selectivity could be tuned by the morphologies of Pd-Au structures; the Au-shell/Pd-core morphology produced a higher pairwise selectivity than that of the Pd-shell/Au-core structure, while the random PdAu alloy showed the best PHIP effect.
WOS关键词	METAL-SUPPORT INTERACTIONS ; SELECTIVE ACETYLENE HYDROGENATION ; CALCINATION TEMPERATURE ; NANOPARTICLE CATALYSTS ; PLATINUM NANOPARTICLES ; CU/AL2O3 CATALYSTS ; TRIPLE BONDS ; CO OXIDATION ; AU ; TIO2
WOS研究方向	Chemistry ; Science & Technology - Other Topics ; Materials Science
语种	英语
出版者	AMER CHEMICAL SOC
WOS记录号	WOS:000423140500028
资助机构	National Natural Science Foundation of China(21622311 ; National Natural Science Foundation of China(21622311 ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; 21611130104 ; 21611130104 ; 21473245 ; 21473245 ; 21733013) ; 21733013) ; National Natural Science Foundation of China(21622311 ; National Natural Science Foundation of China(21622311 ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; 21611130104 ; 21611130104 ; 21473245 ; 21473245 ; 21733013) ; 21733013) ; National Natural Science Foundation of China(21622311 ; National Natural Science Foundation of China(21622311 ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; 21611130104 ; 21611130104 ; 21473245 ; 21473245 ; 21733013) ; 21733013) ; National Natural Science Foundation of China(21622311 ; National Natural Science Foundation of China(21622311 ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; Key Program for Frontier Science of the Chinese Academy of Sciences(QYZDB-SSW-SLH027) ; 21611130104 ; 21611130104 ; 21473245 ; 21473245 ; 21733013) ; 21733013)
内容类型	期刊论文
源URL	[http://ir.wipm.ac.cn/handle/112942/12830]
专题	中国科学院武汉物理与数学研究所
通讯作者	Xu, Jun; Deng, Feng
作者单位	Chinese Acad Sci, State Key Lab Magnet Resonance & Atom & Mol Phys, Natl Ctr Magnet Resonance Wuhan, Wuhan Inst Phys & Math, Wuhan 430071, Hubei, Peoples R China
推荐引用方式 GB/T 7714	Wang, Weiyu,Hu, Han,Xu, Jun,et al. Tuning P-dAu Bimetallic Catalysts for Heterogeneous Parahydrogen-Induced Polarization[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2018,122(2):1248-1257.
APA	Wang, Weiyu.,Hu, Han.,Xu, Jun.,Wang, Qiang.,Qi, Guodong.,...&Deng, Feng.(2018).Tuning P-dAu Bimetallic Catalysts for Heterogeneous Parahydrogen-Induced Polarization.JOURNAL OF PHYSICAL CHEMISTRY C,122(2),1248-1257.
MLA	Wang, Weiyu,et al."Tuning P-dAu Bimetallic Catalysts for Heterogeneous Parahydrogen-Induced Polarization".JOURNAL OF PHYSICAL CHEMISTRY C 122.2(2018):1248-1257.