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：2014

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：20145100329516)

语种：英文

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

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 NaBH4 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 [NaBH4]0.27 respectively. ? 2011 Hydrogen Energy Publications, LLC.