应用化工
應用化工
응용화공
APPLIED CHEMICAL INDUSTRY
2014年
10期
1747-1750
,共4页
鲍新侠%于晓飞%李其明%李芳%陈平
鮑新俠%于曉飛%李其明%李芳%陳平
포신협%우효비%리기명%리방%진평
分子筛%催化剂%团聚%NaBH4%制氢%CoB催化剂
分子篩%催化劑%糰聚%NaBH4%製氫%CoB催化劑
분자사%최화제%단취%NaBH4%제경%CoB최화제
moleeular sieves%eatalyst%agglomeration%NaBH4%hydrogen generation%CoB eatalyst
采用浸渍与化学还原相结合的方法，制备了一系列CoB/ZSM-5非晶态合金负载型催化剂，考察其在硼氢化钠水解制氢中的催化活性。结果表明，CoB/ZSM-5负载型催化剂具有高的催化活性，30℃时NaBH4水解产氢速率为1.3 L/（min·g），表观活化能为54.4 kJ/mol，大大低于粉末状非晶态CoB催化剂的活化能（71.4 kJ/mol）。
採用浸漬與化學還原相結閤的方法，製備瞭一繫列CoB/ZSM-5非晶態閤金負載型催化劑，攷察其在硼氫化鈉水解製氫中的催化活性。結果錶明，CoB/ZSM-5負載型催化劑具有高的催化活性，30℃時NaBH4水解產氫速率為1.3 L/（min·g），錶觀活化能為54.4 kJ/mol，大大低于粉末狀非晶態CoB催化劑的活化能（71.4 kJ/mol）。
채용침지여화학환원상결합적방법，제비료일계렬CoB/ZSM-5비정태합금부재형최화제，고찰기재붕경화납수해제경중적최화활성。결과표명，CoB/ZSM-5부재형최화제구유고적최화활성，30℃시NaBH4수해산경속솔위1.3 L/（min·g），표관활화능위54.4 kJ/mol，대대저우분말상비정태CoB최화제적활화능（71.4 kJ/mol）。
Amorphous CoB/ZSM-5 alloy supported eatalysts were prepared via a eombined impregnation and ehemieal reduetion method,and their eatalytie aetivities were investigated in hydrogen produetion from the hydrolysis of NaBH4 . The result showed that CoB/ZSM-5 supported eatalyst exhibits mueh higher eatalytie aetivity eompared with unsupported powdered CoB eatalyst. The hydrogen generation rate of CoB/ZSM-5 supported eatalysts reaeh about 1. 3 L/(min·g). It was found that the aetivation energy for NaBH4 hydrolysis is ealeulated to be 54. 4 kJ/mol based on CoB/ZSM-5 supported eatalysts whieh is ob-viously lower than unsupported powdered CoB eatalyst(71. 4 kJ/mol).
