Electrosynthesis of glyceric acid from glycerol oxidation on Au-CeO_(2)/CNT catalyst  

作　　者：Tao Chen Chaohui Guan Fei Yao Xingyue Qi Jing Yu Junfeng Du Liang Lv Hang Wei Haibin Chu 

机构地区：[1]Inner Mongolia Key Laboratory of Chemistry and Physics of Rare Earth Materials,Inner Mongolia Engineering and Technology Research Center for Catalytic Conversion and Utilization of Carbon Resource Molecules,School of Chemistry and Chemical Engineering,Inner Mongolia University,Hohhot,010021,China [2]School of Public Health,Inner Mongolia Medical University,Hohhot,010107,China

出　　处：《Journal of Rare Earths》2025年第3期453-461,I0002,共10页稀土学报(英文版)

基　　金：Project supported by the National Natural Science Foundation of China(22161033,21875125);the Natural Science Foundation of Inner Mongolia Autonomous Region of China(2023ZD11);the 111 Project(D20033);the"Grassland Talent"Program and"Grassland Talent"Innovation Team of Inner Mongolia。

摘　　要：Transformation of glycerol into value-added che micals via electro-oxidation using the green electricity is considered as a sustainable and promising process.Whereas,the synthesis of specific C3 products such as glyceric acid(GLA)from electro-oxidation of glycerol still suffers from poor catalytic performance.Here,we used a two-step deposition strategy to prepare Au-CeO_(2)/CNT catalyst for highly efficient electrosynthesis of GLA from glycerol oxidation under alkaline conditions.Upon treating 0.5 mol/L glycerol at 1.12 V(vs.RHE)for 12 h in 1.0 mol/L KOH solution,the glycerol conversion and GLA selectivity over Au-CeO_(2)/CNT achieve 99.7%and 50.0%,respectively.The glycerol conversion doubles when an optimal amount of CeO_(2)is introduced to the Au/CNT catalyst,Au-CeO_(2)/CNT provides numerous active sites at ternary junctions of Au-CeO_(2)-CNT,which effectively suppress the adsorption of GLA on the surface of Au nanoparticles and prevent the nanoparticles from serious agglomeration,thereby facilitate the glycerol-to-GLA conversion with considerable cyclability.This study provides valuable insight into the rational design of high-performance catalysts for alcohol electro-oxidation.

关 键 词：Glycerol oxidation ELECTROSYNTHESIS Gold nanoparticle CERIA Glyceric acid Rare earths 

分 类 号：O643.36[理学—物理化学] O643.3[理学—化学]