Au/Mg(OH)_2:Highly efficient for selective oxidation of 1,2-propanediol to lactic acid with molecular oxygen  

作　　者：MA Hong NIE Xin CAI JiaYing CHEN Chen GAO Jin MIAO Hong XU Jie 

机构地区：[1]State Key Laboratory of Catalysis,Dalian Institute of Chemical Physics,Chinese Academy of Sciences,Dalian 116023,China [2]Graduate University of Chinese Academy of Sciences,Beijing 100049,China

出　　处：《Science China Chemistry》2010年第7期1497-1501,共5页中国科学(化学英文版)

基　　金：supported by the National Natural Science Foundation of China (20803074)

摘　　要：The catalytic oxidation of biomass-derived polyhydroxyl compounds provides an efficient and green route for biomass resource utility.Gold nanocrystals supported on Mg(OH)2 were synthesized by sol-immobilization method,characterized by XRD,TEM,UV-vis DRS,and tested in the selective oxidation of 1,2-propanediol to lactic acid.The gold particle size and the ratio of Au to 1,2-propanediol strongly influenced the catalytic activity.Over Au/Mg(OH)2 with the majority of gold particles concentrated in 14-18 nm,excellent catalytic performance with 94.4% conversion and 89.3% selectivity to lactic acid has been achieved under 0.3 MPa O2 at 60°C for 6 h.The catalytic oxidation of biomass-derived polyhydroxyl compounds provides an efficient and green route for biomass resource utility.Gold nanocrystals supported on Mg(OH)2 were synthesized by sol-immobilization method,characterized by XRD,TEM,UV-vis DRS,and tested in the selective oxidation of 1,2-propanediol to lactic acid.The gold particle size and the ratio of Au to 1,2-propanediol strongly influenced the catalytic activity.Over Au/Mg(OH)2 with the majority of gold particles concentrated in 14-18 nm,excellent catalytic performance with 94.4% conversion and 89.3% selectivity to lactic acid has been achieved under 0.3 MPa O2 at 60°C for 6 h.

关 键 词：GOLD MG(OH)2 CATALYSIS oxidation 1 2-PROPANEDIOL lactic acid 

分 类 号：O621.3[理学—有机化学]