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题名: Preferential cleavage of C-C bonds over C-N bonds at interfacial CuO-Cu2O sites
作者: Wang, Min1;  Gu, Xiang-Kui1;  Su, Hai-Yan1;  Lu, Jian-Min1;  Ma, Ji-Ping1;  Yu, Miao1;  Zhang, Zhe1;  Wang, Feng1
关键词: Heterogeneous catalysis ;  Defect sites ;  C-C bond activation ;  Molecular oxygen ;  Cuprous oxide
刊名: JOURNAL OF CATALYSIS
发表日期: 2015-10-01
DOI: 10.1016/j.jcat.2015.08.001
卷: 330, 页:458-464
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: Creation of substrate-accessible interfacial defect sites will bring about new catalytic discoveries because substrate binding and activation on these sites are pivotal for controlling reaction intermediate and product selectivity. The partial oxidation of pristine Cu2O can lead to an excellent selective oxidation catalyst (CuO/Cu2O). The CuO/Cu2O, containing embedded CuO nanodomains on the surface and possessing abundant coordinatively unsaturated copper sites at the CuO-Cu2O interface, shows very high activity toward C-C bond cleavage and excellent selectivity toward formamides in trialkylamines oxidation. This result is exceptional because the previous works mainly offer dealkylated amines via C-N bond cleavage. The unusual catalysis by CuO/Cu2O is attributed to the co-activation of oxygen and amines in close proximity at the CuO-Cu2O interface. The present study contributes a new concept of delicate controlling substrate-accessible interfacial active sites on pristine oxide surfaces, and also offers a novel formamide synthesis method by trialkylamine oxidation. (C) 2015 Elsevier Inc. All rights reserved.
关键词[WOS]: ONE-POT SYNTHESIS ;  METHANOL SYNTHESIS ;  CU2O NANOCRYSTALS ;  OXIDE NANOCRYSTALS ;  CATALYTIC-ACTIVITIES ;  PROPYLENE OXIDATION ;  ACTIVE-SITE ;  IN-SITU ;  COPPER ;  CHLORIDE
语种: 英语
WOS记录号: WOS:000362603200043
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146588
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, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Wang, Min,Gu, Xiang-Kui,Su, Hai-Yan,et al. Preferential cleavage of C-C bonds over C-N bonds at interfacial CuO-Cu2O sites[J]. JOURNAL OF CATALYSIS,2015,330:458-464.
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