Catalytic oxidation of glycerol to tartronic acid over Au/HY catalyst under mild conditions
Catalytic oxidation of glycerol to tartronic acid over Au/HY catalyst under mild conditions
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温和条件下 Au/HY 催化剂催化氧化甘油生成丙二酸
DOI：
10.1016/s1872-2067(14)60132-7
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发表时间：
2014-10-01
影响因子：
16.5
通讯作者：
Xu, Jie
中科院分区：
文献类型：
--
作者：
Cai, Jiaying;Ma, Hong;Xu, Jie
金纳米团簇或纳米粒子上的各种支持物（CeO 2，活性炭，HY，REY，和NaY）进行了研究，在温和的条件下，在水相中的甘油氧化。与其它催化剂相比，Au/HY对一元羧酸（甘油酸）或C-C裂解产物（草酸）的生成具有显著的催化性能。Au/HY在60 ℃、0.3 MPa O-2条件下，甘油转化率达98%，丙醇二酸收率达80%。进一步的表征表明，小尺寸的Au团簇是高氧化性能的关键因素。原位红外光谱分析表明，甘油首先转化为甘油酸，然后甘油酸直接氧化为丙醇二酸。(C)2014年，中国科学院大连化学物理研究所。Elsevier B. V.出版，保留所有权利。
Gold nanoclusters or nanoparticles on various supports (CeO2, activated carbon, HY, REY, and NaY) were investigated for glycerol oxidation in the aqueous phase under mild conditions. Compared with other catalysts, Au/HY showed remarkable catalytic performance in forming dicarboxylic acid (tartronic acid) over the monocarboxylic acid (glyceric acid) or the C-C cleavage product (oxalic acid). Au/HY achieved 98% conversion of glycerol and 80% yield of tartronic acid at 60 degrees C under 0.3 MPa O-2. Further characterization showed that the small size of Au clusters is the key factor for the high oxidation performance. In situ Fourier transform infrared spectroscopy revealed that glycerol was first transformed to glyceric acid, and then glyceric acid was directly oxidized to tartronic acid. (C) 2014, Dalian Institute of Chemical Physics, Chinese Academy of Sciences. Published by Elsevier B.V. All rights reserved.