Electrosynthesis of diphenyl carbonate catalyzed by Pd2+/0 (in situ NHC) redox catalyst promoted at Au anode
Electrosynthesis of diphenyl carbonate catalyzed by Pd2+/0 (in situ NHC) redox catalyst promoted at Au anode
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DOI：
10.1007/s11164-015-1975-8
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发表时间：
2015-12-01
影响因子：
3.3
通讯作者：
Yamanaka, Ichiro
中科院分区：
文献类型：
--
作者：
Kanega, Ryoichi;Ogihara, Hitoshi;Yamanaka, Ichiro
在恒电流电解条件下，研究了Au阳极对Pd（in-situ NHC）电催化苯酚与CO（1 atm）电化学羰基化合成碳酸二苯酯（DPC）的影响。负载在碳材料上的Au（Au/碳）是均相钯电催化剂氧化的有效阳极。测试各种碳材料、Vulcan XC-72炭黑（XC 72）、活性炭、科琴黑和石墨烯纳米片（石墨烯-1、-2、-3）作为Au的载体。Au/graphene-3是DPC形成的最有效的阳极。研究了Au负载量和还原剂（H-2和NaBH 4）对Au/graphene-3阳极形成DPC的反应性的影响，并使用XRD光谱和TEM分析对材料进行了表征。这些实验事实表明，石墨烯表面的小Au颗粒对于通过Pd（in situ NHC）电催化剂合成DPC是上级的。
The effects of Au anodes on electrochemical carbonylation of phenol with CO (1 atm) to diphenyl carbonate (DPC) catalyzed by Pd (in situ NHC) electrocatalyst were studied under galvanostatic electrolysis conditions. Au supported on carbon materials (Au/carbon) were effective anodes for oxidation of the homogeneous Pd electrocatalyst. Various carbon materials, Vulcan XC-72 carbon black (XC72), activate carbon, Ketjenblack, and graphene nanoplatelets (graphene-1, -2, -3) were tested as a support for Au. The Au/graphene-3 was the most effective anode for DPC formation. Effects of Au loadings and reducing agents (H-2 and NaBH4) on the reactivity of the Au/graphene-3 anode for the DPC formation were studied and the materials were characterized using XRD spectroscopy and TEM analysis. These experimental facts indicated that small Au particles on the surface of graphene were superior for the DPC synthesis by the Pd (in situ NHC) electrocatalyst.