Catalytic interconversion between hydrogen and formic acid at ambient temperature and pressure
Catalytic interconversion between hydrogen and formic acid at ambient temperature and pressure
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DOI：
10.1039/c2ee03315a
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发表时间：
2012-06-01
影响因子：
32.5
通讯作者：
Fukuzumi, Shunichi
中科院分区：
文献类型：
--
作者：
Maenaka, Yuta;Suenobu, Tomoyoshi;Fukuzumi, Shunichi
在常温常压条件下，以[Ir-III(CP*)(4-(1H-吡唑-1-基-卡帕N-2)苯甲酸-卡帕C-3)(H2O)](2)SO4[1](2)中心点状SO4为催化剂，实现了水中氢气和甲酸在常温常压下的相互转化。常温下，在弱碱性水(pH 7.5)中，二氧化碳在H-2和CO2的常压下催化氢加氢反应，而在酸性水(pH 2.8)中，甲酸在1的存在下有效地分解生成H-2和CO2。
Interconversion between hydrogen and formic acid in water at ambient temperature and pressure has been made possible by using a [C,N] cyclometalated organoiridium complex, [Ir-III(Cp*)(4-(1H-pyrazol-1-yl-kappa N-2) benzoic acid-kappa C-3)(H2O)](2)SO4 [1](2)center dot SO4, as an efficient catalyst for both directions depending on pH. Hydrogenation of carbon dioxide by hydrogen occurs in the presence of a catalytic amount of 1 under an atmospheric pressure of H-2 and CO2 in weakly basic water (pH 7.5) at room temperature, whereas formic acid efficiently decomposes to afford H-2 and CO2 in the presence of 1 in acidic water (pH 2.8).