Hydrogen generation from methanolysis of sodium borohydride over Co/Al_2O_3 catalyst  

作　　者：Dongyan Xu Lin Zhao Ping Dai Shengfu Ji 

机构地区：[1]College of Chemical Engineering,Qingdao University of Science and Technology,Qingdao 266042,Shandong,China [2]College of Electromechanical Engineering,Qingdao University of Science and Technology,Qingdao 266061,Shandong,China [3]State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology,Beijing 100029,China

出　　处：《Journal of Natural Gas Chemistry》2012年第5期488-494,共7页天然气化学杂志（英文版）

基　　金：supported by the Key Project of Chinese Ministry of Education (No. 208076);Shandong Provincial Natural Science Foundation,China (No. ZR2010EM069);the Open Project of State Key Laboratory of Chemical Resource Engineering,Beijing University of Chemical Technology

摘　　要：Co/Al2O3 catalyst is prepared with an impregnation-chemical reduction method and used to catalyze the methanolysis of sodium borohydride （NaBH 4） for hydrogen generation.At solution temperature of 0 C,the methanolysis reaction can be effectively accelerated using Co/Al2O3 catalyst and provide a desirable hydrogen generation rate,which makes it suitable for applications under the circumstance of low environmental temperature.The byproduct of methanolysis reaction is analyzed by X-ray diffraction （XRD） and Fourier transform infrared spectroscopy （FTIR）.The characterization results indicate that methanol can be easily recovered after methanolysis reaction by hydrolysis of the methanolysis byproduct,NaB（OCH 3） 4.The catalytic activity of Co/Al2O3 towards NaBH 4 methanolysis can be further improved by appropriate calcination treatment.The catalytic methanolysis kinetics and catalyst reusability are also studied over the Co/Al2O3 catalyst calcined at the optimized temperature.Co/Al2O3 catalyst is prepared with an impregnation-chemical reduction method and used to catalyze the methanolysis of sodium borohydride （NaBH 4） for hydrogen generation.At solution temperature of 0 C,the methanolysis reaction can be effectively accelerated using Co/Al2O3 catalyst and provide a desirable hydrogen generation rate,which makes it suitable for applications under the circumstance of low environmental temperature.The byproduct of methanolysis reaction is analyzed by X-ray diffraction （XRD） and Fourier transform infrared spectroscopy （FTIR）.The characterization results indicate that methanol can be easily recovered after methanolysis reaction by hydrolysis of the methanolysis byproduct,NaB（OCH 3） 4.The catalytic activity of Co/Al2O3 towards NaBH 4 methanolysis can be further improved by appropriate calcination treatment.The catalytic methanolysis kinetics and catalyst reusability are also studied over the Co/Al2O3 catalyst calcined at the optimized temperature.

关 键 词：hydrogen generation sodium borohydride METHANOLYSIS COBALT 

分 类 号：O614.112[理学—无机化学] TQ116.2[理学—化学]