化学镀Ni-Fe-Co-P/CNFs催化硼氢化钠水解制氢  

Eeffect of Electroless-deposited Ni-Fe-Co-P/CNFs Catalyst on Hydrogen Generation from NaBH_4 Solution

作　　者：王丽娜[1] 李忠[1] 张涛[1] 刘腾宇[1] 王桂雪[1] 谢广文[1] 

机构地区：[1]青岛科技大学材料科学与工程学院,山东青岛266042

出　　处：《青岛科技大学学报（自然科学版）》2015年第4期403-408,共6页Journal of Qingdao University of Science and Technology:Natural Science Edition

基　　金：山东省自然科学基金项目(ZR2011MM005)

摘　　要：采用化学镀法在碳纤维(CNFs)上负载Ni-Fe-Co-P合金,用X射线能量色散谱仪(EDS)、场发射扫描电子显微镜(FE-SEM)、X射线衍射仪(XRD)、化学吸附仪(BET)等手段对合金进行表征。结果表明,Ni-Fe-Co-P为非晶态,含有76.68%镍、10.00%钴、4.30%铁、9.02%磷,非晶合金镀层在CNFs基体上负载和分散良好。硼氢化钠水解制氢实验考察了Ni-Fe-Co-P/CNFs的催化性能。该催化剂的催化性能与催化剂的用量,氢氧化钠浓度,硼氢化钠浓度以及温度有关,同时探究了热处理温度和时间对Ni-Fe-Co-P/CNFs催化剂催化性能的影响。结果表明,20mL含0.4%硼氢化钠的溶液在55℃时的产氢速率约为1 500mL·(g·min)-1。由动力学研究得到该催化剂催化硼氢化钠水解反应的活化能为54.81kJ·mol-1。The Ni-Fe-Co-P/CNFs catalyst was prepared by electroless plating and characterized by EDS, FE-SEM,XRD and BET, which revealed that the as-prepared Ni-Fe- Co-P/CNFs catalyst was in amorphous form with the composition of 76.68% Ni, 10.00%Co, 4.30%Fe, 9.02%P,and the Ni-Fe-Co-P/CNFs catalyst had a good dispersion and coating condition. The catalytic properties were investigated by the hydrogen generation from alkaline NaBH4 solution. The activities of catalyst for NaBH4 hydrolysis were analyzed in relation to the amount of Ni-Fe-Co-P/CNFs catalyst, temperature and concentrations of NaOH and NaBH4. The temperature and time of heat treatment also had effect on the catalytic activities. The results showed that the average hydrogen generation rate at 55 ℃ was 1 500 mL . （g . min）-1 with 20 mL solution containing 0.4% NaBH4. The activation energy of the catalyst for the hydrogen generation reaction was measured to be 54. 81 kJ .mol -1.

关 键 词：催化剂 硼氢化钠 制氢 Ni—Fe—Co—P/CNFs 化学镀 

分 类 号：TQ153.2[化学工程—电化学工业]