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题名: Covalent triazine framework supported non-noble metal nanoparticles with superior activity for catalytic hydrolysis of ammonia borane: from mechanistic study to catalyst design
作者: Li, Zhao1, 2;  He, Teng1;  Liu, Lin1;  Chen, Weidong1, 2;  Zhang, Miao1, 2;  Wu, Guotao1;  Chen, Ping1, 3, 4
刊名: CHEMICAL SCIENCE
发表日期: 2017
DOI: 10.1039/c6sc02456d
卷: 8, 期:1, 页:781-788
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: Development of non-noble metal catalysts with similar activity and stability to noble metals is of significant importance in the conversion and utilization of clean energy. The catalytic hydrolysis of ammonia borane (AB) to produce 3 equiv. of H-2, as an example of where noble metal catalysts significantly outperform their non-noble peers, serves as an excellent test site for the design and optimization of non-noble metal catalysts. Our kinetic isotopic effect measurements reveal, for the first time, that the kinetic key step of the hydrolysis is the activation of H2O. Deducibly, a transition metal with an optimal electronic structure that bonds H2O and -OH in intermediate strengths would favor the hydrolysis of AB. By employing a covalent triazine framework (CTF), a newly developed porous material capable of donating electrons through the lone pairs on N, the electron densities of nano-sized Co and Ni supported on CTF are markedly increased, as well as their catalytic activities. Specifically, Co/CTF exhibits a total turnover frequency of 42.3 mol(H2) mol(Co)(-1) min(-1) at room temperature, which is superior to all peer non-noble metal catalysts ever reported and even comparable to some noble metal catalysts.
关键词[WOS]: CHEMICAL HYDROGEN STORAGE ;  CORE-SHELL NANOPARTICLES ;  N-DOPED CARBON ;  BOND-DISSOCIATION ENERGIES ;  B-11 NMR MEASUREMENTS ;  THERMAL-DECOMPOSITION ;  NICKEL NANOPARTICLES ;  SODIUM-BOROHYDRIDE ;  ORGANIC FRAMEWORKS ;  AEROBIC OXIDATION
语种: 英语
WOS记录号: WOS:000391454500097
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/151857
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, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China
4.Chinese Acad Sci, Dalian Inst Chem Phys, Collaborat Innovat Ctr Chem Energy Mat, Dalian 116023, Peoples R China

Recommended Citation:
Li, Zhao,He, Teng,Liu, Lin,et al. Covalent triazine framework supported non-noble metal nanoparticles with superior activity for catalytic hydrolysis of ammonia borane: from mechanistic study to catalyst design[J]. CHEMICAL SCIENCE,2017,8(1):781-788.
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