Hollow Au1Cu1(111) Bimetallic Catalyst Promotes the Selective Electrochemical Conversion of Glycerol into Glycolic Acid,ACS Catalysis

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Hollow Au1Cu1(111) Bimetallic Catalyst Promotes the Selective Electrochemical Conversion of Glycerol into Glycolic Acid
ACS Catalysis ( IF 11.3 ) Pub Date : 2024-07-16 , DOI: 10.1021/acscatal.4c00483
Lingqin Shen _{1,

2} , Luyao Sun ₁ , Mark Douthwaite ₂ , Ouardia Akdim ₂ , Stuart Taylor ₂ , Graham J. Hutchings ₂

Affiliation

Electrochemical catalysis of polyols enables precise control over the cleavage of C–C and C–O bonds, facilitating high selectivity toward high-value glycolic acid. Here, we report that a hollow spheroidal bimetallic Au₁Cu₁ catalyst demonstrates high activity and selectivity toward glycerol, 1,2-propanediol, and ethylene glycol electrooxidation. Under the optimized conditions, glycerol conversion and glycolic acid selectivity reached 90 and 45%, respectively. The Au₁Cu₁ catalyst exhibits good stability after multiple cycles of electrolysis. Structural characterization and density functional theory (DFT) calculations confirmed that the hollow structure of the catalyst enhances the electrochemical surface area, with the Au₁Cu₁(111) facet facilitating the selective electrocatalytic conversion of glycerol to glycolic acid.

中文翻译：

空心Au1Cu1(111)双金属催化剂促进甘油选择性电化学转化为乙醇酸

多元醇的电化学催化能够精确控制 C-C 和 C-O 键的断裂，从而促进对高价值乙醇酸的高选择性。在这里，我们报道了一种空心球状双金属Au ₁ Cu ₁催化剂对甘油、1,2-丙二醇和乙二醇的电氧化表现出高活性和选择性。在优化条件下，甘油转化率和乙醇酸选择性分别达到90%和45%。 Au ₁ Cu ₁催化剂在多次电解循环后表现出良好的稳定性。结构表征和密度泛函理论（DFT）计算证实，催化剂的中空结构增强了电化学表面积，Au ₁ Cu ₁ (111) 面有利于甘油选择性电催化转化为乙醇酸。

更新日期：2024-07-16

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