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题名: Unprecedentedly High Formic Acid Dehydrogenation Activity on an Iridium Complex with an N,N'-Diimine Ligand in Water
作者: Wang, Zhijun1, 2;  Lu, Sheng-Mei1;  Li, Jun1;  Wang, Jijie1;  Li, Can1
关键词: dehydrogenation ;  diimine ligand ;  formic acid ;  hydrogen ;  iridium complex
刊名: CHEMISTRY-A EUROPEAN JOURNAL
发表日期: 2015-09-01
DOI: 10.1002/chem.201502086
卷: 21, 期:36, 页:12592-12595
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: Hydrogen production from the dehydrogenation of formic acid (FA) is promising. Most of the current catalysts for FA dehydrogenation are effective only in the presence of bases or additives. We report here newly developed iridium complexes containing conjugated N,N-diimine ligands for FA dehydrogenation in water without the addition of bases or additives. A turnover frequency (TOF) of 487500h(-1) with [Cp*Ir(L1)Cl]Cl (L1=2,2-bi-2-imidazoline) at 90 degrees C and a turnover number (TON) of 2400000 with in situ prepared catalyst from [IrCp*Cl-2](2) and 2,2-bi-1,4,5,6-tetrahydropyrimidine (L2) at 80 degrees C were obtained, the highest values reported for FA dehydrogenation to date. A mechanistic study reveals that the formation of [Ir-H] intermediate species is the rate-determining step in the catalytic cycle.
关键词[WOS]: TRANSITION-METAL IONS ;  HYDROGEN-STORAGE ;  AQUEOUS-SOLUTION ;  CARBON-DIOXIDE ;  SELECTIVE DEHYDROGENATION ;  REVERSIBLE HYDROGENATION ;  COORDINATION-COMPLEXES ;  AMBIENT-TEMPERATURE ;  RUTHENIUM COMPLEXES ;  IRON CATALYST
语种: 英语
WOS记录号: WOS:000360312100008
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/146492
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, State Key Lab Catalysis, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100049, Peoples R China

Recommended Citation:
Wang, Zhijun,Lu, Sheng-Mei,Li, Jun,et al. Unprecedentedly High Formic Acid Dehydrogenation Activity on an Iridium Complex with an N,N'-Diimine Ligand in Water[J]. CHEMISTRY-A EUROPEAN JOURNAL,2015,21(36):12592-12595.
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