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题名: Covalent-bonding to irreducible SiO2 leads to high-loading and atomically dispersed metal catalysts
作者: Zhu, Yifeng1, 2;  Kong, Xiao3;  Yin, Junqing1;  You, Rui4;  Zhang, Bin1;  Zheng, Hongyan5;  Wen, Xiaodong1, 5;  Zhu, Yulei1, 5;  Li, Yong-Wang1, 5
关键词: Heterogeneous catalysis ;  Hydrogenation ;  Metal oxides ;  Covalent bonding ;  Silica ;  SiO2
刊名: JOURNAL OF CATALYSIS
发表日期: 2017-09-01
DOI: 10.1016/j.jcat.2017.07.030
卷: 353, 页:315-324
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Engineering, Chemical
研究领域[WOS]: Chemistry ;  Engineering
英文摘要: Being a suitable way for achieving the maximum efficiency of atoms, the atomically dispersed metals are playing an ever-increasingly important role in bridging heterogeneous and homogeneous catalysis. It is extremely challenging for dispersing metals in atomic-scales as the applicable high-loading catalysts for industry. The reducible and defective supports or metal surfaces are commonly chosen for anchoring the metals. We here report that atomically-dispersed but high-loading (15 wt%) metals were achieved by covalent-bonding to irreducible SiO2 (though silanol groups) which is realized by a simple urea hydrolysis assistant hydrothermal-deposition method. The Cu-O-Si bonding tailors the structural and electronic states of catalyst by maximum of atom efficiency and tuning electronic effects. The intrinsic performance of C=O hydrogenation was thus boosted by one- to two- orders-of-magnitude in comparison with impregnated and precipitated catalysts. The choices of metals include Cu, Zn, Ni, Co and Mn, showing potentials for a category of applied materials. (C) 2017 Elsevier Inc. All rights reserved.
关键词[WOS]: ALPHA-QUARTZ SURFACE ;  GENERATION VIBRATIONAL SPECTROSCOPY ;  1ST-PRINCIPLES MOLECULAR-DYNAMICS ;  SINGLE-ATOM CATALYSTS ;  AUGMENTED-WAVE METHOD ;  WATER-GAS SHIFT ;  CO OXIDATION ;  CU CATALYSTS ;  ULTRASOFT PSEUDOPOTENTIALS ;  HETEROGENEOUS CATALYSIS
语种: 英语
WOS记录号: WOS:000410468300035
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/150020
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Coal Chem, State Key Lab Coal Convers, Taiyuan 030001, Shanxi, Peoples R China
2.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
3.Nanjing Agr Univ, Coll Engn, Nanjing 210031, Jiangsu, Peoples R China
4.Univ Sci & Technol China, Dept Chem Phys, Hefei 230026, Anhui, Peoples R China
5.Synfuels China Co Ltd, Beijing 101407, Peoples R China

Recommended Citation:
Zhu, Yifeng,Kong, Xiao,Yin, Junqing,et al. Covalent-bonding to irreducible SiO2 leads to high-loading and atomically dispersed metal catalysts[J]. JOURNAL OF CATALYSIS,2017,353:315-324.
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