文献类型：期刊文献

英文题名：Kinetics of NaBH4 hydrolysis on carbon-supported ruthenium catalysts

作者：Zou, Y.C.[1]; Nie, M.[1]; Huang, Y.M.[1]; Wang, J.Q.[2]; Liu, H.L.[1]

机构：[1] Ministry of Education, Department of Chemistry, East China University of Science and Technology, Shanghai 200237, China; [2] Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China

年份：2011

卷号：36

期号：19

起止页码：12343

外文期刊名：International Journal of Hydrogen Energy

收录：EI(收录号：20113814343261)

语种：英文

外文关键词：Ruthenium compounds - Hydrolysis - Spheres - Carbon - Sodium hydroxide - Catalysts - Reaction kinetics - Ruthenium - Hydrogen production - Heat transfer - Sodium Borohydride

摘要：In this work, different shapes (powder and spherical) of ruthenium-active carbon catalysts (Ru/C) were prepared by impregnation reduction method for hydrogen generation (HG) from the hydrolysis reaction of the alkaline NaBH 4 solution. The effects of temperature, amount of catalysts, and concentration of NaOH and NaBH4 on the hydrolysis of NaBH4 solution were investigated with different shapes of Ru/C catalysts. The results show that the HG kinetics of NaBH4 solution with the powder Ru/C catalysts is completely different from that with the spherical Ru/C catalysts. The main reason is that both mass and heat transfer play important roles during the reaction with Ru/C catalysts. The HG overall kinetic rate equations for NaBH4 hydrolysis using the powder Ru/C catalysts and the spherical catalysts are described as r = A exp (-50740/RT) [catalyst]1.05 [NaOH]-0.13 [NaBH4]-0.25 and r = A exp (-52,120/RT) [catalyst]1.00 [NaOH]-0.21 [NaBH 4]0.27 respectively. ? 2011, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.