化工学报Issue(1)：105-113,9.DOI:10.11949/j.issn.0438-1157.20140645
棉杆活性炭负载Co-B催化剂催化硼氢化钠水解制氢的性能
Hydrogen generation by sodium borohydride hydrolysis on Co-B catalysts supported on cotton stalk-based activated carbon
摘要
Abstract
Cotton stalk-based activated carbons were prepared by phosphoric acid activation of cotton stalks (CS) in a fluidized bed. The Co-B catalysts supported on cotton stalk-based activated carbon were generated by the impregnation-chemical reduction method. Meanwhile, the prepared activated carbons and catalysts were characterized by nitrogen physisorption, FTIR, XRD and SEM. The effects of activation reaction parameters, reaction temperature and recycle times on hydrogen generating performance of the activated carbons supported Co-B catalysts were investigated. The optimal activation temperature, activation time and amount of activator ( H3PO4 CSm /m ) for activation of cotton stalk were 500℃, 1 h and 0.75, respectively. Under these conditions, the as-prepared Co-B/C catalyst with 14.5%(mass) Co exhibited the best hydrogen generating performance with an average rate of hydrogen generation up to 12.06 L·min−1·(g Co)−1 at 25℃. Activation energy of hydrogen generation reaction on such catalyst was estimated to be 44.61 kJ·mol−1. After five cycles, the catalyst retained 54%initial activity, exhibiting high activity and stability.关键词
活性炭/催化剂载体/活化条件/Co-B/C催化剂/硼氢化钠/制氢Key words
activated carbon/catalyst support/activation condition/Co-B/C catalyst/sodium borohydride/hydrogen production分类
能源科技引用本文复制引用
曲健林,韩敏,张秀丽,徐秀峰,郭庆杰..棉杆活性炭负载Co-B催化剂催化硼氢化钠水解制氢的性能[J].化工学报,2015,(1):105-113,9.基金项目
国家自然科学基金项目（21276129）；青岛市应用基础研究计划项目（14-2-4-5-jch）。@@@@supported by the National Natural Science Foundation of China (21276129) and the Qingdao Application Foundation Research Project (14-2-4-5-jch) （21276129）
