甘油酸
甘油
催化作用
选择性
产量(工程)
化学
产品分销
有机化学
材料科学
冶金
作者
Jiefei Li,Zhenyu Li,Zexuan Zheng,Xueqiong Zhang,Hao Zhang,Hang Wei,Haibin Chu
出处
期刊:Chemcatchem
[Wiley]
日期:2022-06-28
卷期号:14 (16)
被引量:3
标识
DOI:10.1002/cctc.202200509
摘要
Abstract Electrocatalytic oxidation of glycerol is a highly efficient way for upgrading glycerol toward fine chemicals. Currently, electro‐oxidation of glycerol into the high value‐added C3 products remains a big challenge because of the poor catalytic activity, low selectivity, and high cost of the noble metal catalysts, especially in the alkaline medium. Here, we report that the Pt−CeO 2 /CNT (CNT=carbon nanotubes) catalyst remarkably promotes the conversion (86.5 % vs. 37.6 %) and recycling stability for glycerol electro‐oxidation reaction, as compared with Pt/CNT. However, the improved catalytic activity of Pt−CeO 2 /CNT is accompanied by the further oxidation of C3 products including glyceric acid (GLYA). By tuning the product distribution by the ratio of CeO 2 and CNT, applied potential, and the Pt loading amount, the high selectivities of C3 products (95 %) and GLYA (59 %) are achieved together with the high glycerol conversion (86 %), leading to the impressive yields of C3 products (81 %) and GLYA (50 %). The unique contributions of CeO 2 includes not only the enhanced catalytic activity and recycling stability, but also the suppressed further oxidation of GLYA. Moreover, higher yield of GLYA is reached over Pt−CeO 2 /CNT even with half loading of Pt, as compared with Pt/CNT.
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