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Selective Oxidation of Glycerol to Glyceric Acid in Base‐Free Aqueous Solution at Room Temperature Catalyzed by Platinum Supported on Carbon Activated with Potassium Hydroxide
Author(s) -
Tan Hua,
Tall Omar E.,
Liu Zhaohui,
Wei Nini,
Yapici Tahir,
Zhan Tong,
Hedhill Mohamed Nejib,
Han Yu
Publication year - 2016
Publication title -
chemcatchem
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.497
H-Index - 106
eISSN - 1867-3899
pISSN - 1867-3880
DOI - 10.1002/cctc.201600052
Subject(s) - chemistry , glyceric acid , catalysis , inorganic chemistry , glycerol , adsorption , aqueous solution , activated carbon , carbon fibers , organic chemistry , materials science , composite number , composite material
Pt supported on KOH‐activated mesoporous carbon (K‐AMC) was used to catalyze glycerol oxidation under base‐free conditions at room temperature. To study the relationship between the carbon surface chemistry and the catalytic performance of the K‐AMC‐based Pt catalysts, different levels of surface oxygen functional groups (SOFGs) on the AMC supports were induced by thermal treatment at different temperatures under inert or H 2 gas. A strong effect of the surface chemistry was observed on AMC‐supported Pt catalysts for glycerol oxidation. The presence of carboxylic acid groups impedes the adsorption of glycerol, which leads to the reduction of catalytic activity, whereas the presence of high‐desorption‐temperature SOFGs, such as phenol, ether, and carbonyl/quinone groups, provide hydrophilicity to the carbon surface that improves the adsorption of glycerol molecules on Pt metal surface, which is beneficial for the catalytic activity.