四吡啶二胺钴电催化质子还原
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- 英文论文题名：Proton Reduction Catalyzed by Tetra-Pyridine Di-amine Cobalt(Ⅱ)
- 论文作者：陈林 ; 桑革
- 英文论文作者：Lin Chen ; Ge Sang ; Science and Technology on Surface Physics and Chemistry Laboratory
- 年：2016
- 作者机构：表面物理与化学重点实验室;
- 论文关键词：质子还原 ; 电催化 ; 配合物 ; 质子摆渡
- 英文论文关键词：proton reduction ; Electrocatalyze ; complex ; proton relay
- 会议召开时间：2016-07-01
- 会议录名称：中国化学会第30届学术年会摘要集-第二十九分会：电化学材料
- 语种：中文
- 分类号：O641.4
- 学会代码：ZGHY
- 会议名称：中国化学会第30届学术年会-第二十九分会 ; 电化学材料
- 会议地点：中国辽宁大连
- 主办单位：中国化学会
- 学会名称：中国化学会
- 页数：1
- 文件大小：591k
- 原文格式：D
- 会议级别：全国
摘要
实验合成了一类四吡啶二胺钴配合物,能在乙腈溶液中电催化2,6-二甲基吡啶氟硼酸盐(DMPH~+BF_4~-)还原产生氢气。当中心金属Co(Ⅱ)被还原到Co(Ⅰ)后,一个吡啶基发生解离,在钴中心形成一个催化质子还原反应的空位,解离后的吡啶基则作为分子内"质子摆渡"基团,加速质子从本体溶液向催化中心转移。在600mV过电位下,测得电极表面催化频率约为4000s~(-1).
A cobalt complex containing tetra-pyridine di-amine catalyses the electrochemical production of hydrogen from 2,6-dimethylpyridinium cation(DMPH+) in acetonitrile solution. One pyridine dissociates from Co center when Co(Ⅱ) has been reduced to Co(Ⅰ), giving the appearance of an open site on Co core where the catalytic reaction happens. The dissociated pyridine ferries protons from bulk solution to the site, accelerating H_2 evolution, and a turnover frequency about 4000 s~(-1) is observed at an overpotential of circa 600 mV.
A cobalt complex containing tetra-pyridine di-amine catalyses the electrochemical production of hydrogen from 2,6-dimethylpyridinium cation(DMPH+) in acetonitrile solution. One pyridine dissociates from Co center when Co(Ⅱ) has been reduced to Co(Ⅰ), giving the appearance of an open site on Co core where the catalytic reaction happens. The dissociated pyridine ferries protons from bulk solution to the site, accelerating H_2 evolution, and a turnover frequency about 4000 s~(-1) is observed at an overpotential of circa 600 mV.
引文
[1]Sun Y,Bigi J P,Piro N A,et al.J.Am.Chem.Soc.,2011,133:9212-9215.
[2]Zhang P L,Wang M,Gloaguan F,et al.Chem.Commun.,2013,49:9455-9457.
[2]Zhang P L,Wang M,Gloaguan F,et al.Chem.Commun.,2013,49:9455-9457.