Raney Ni催化碱性硼氢化钠溶液水解制氢

doi:10.16085/j.issn.1000-6613.2017-0473

化工进展 ›› 2017, Vol. 36 ›› Issue (12): 4462-4467.DOI: 10.16085/j.issn.1000-6613.2017-0473

Raney Ni催化碱性硼氢化钠溶液水解制氢

魏磊, 马麦霞, 付君宇, 高静, 董晓龙, 魏丕叶

廊坊师范学院化学与材料科学学院, 河北廊坊 065000

收稿日期:2017-03-21 修回日期:2017-08-15 出版日期:2017-12-05 发布日期:2017-12-05
通讯作者: 魏磊(1986-),男,博士,讲师,研究方向为催化制氢。
作者简介:魏磊(1986-),男,博士,讲师,研究方向为催化制氢。E-mail:weilei1108@163.com。
基金资助:
河北省自然科学基金（B2017408042）、河北省教育厅资助科研项目（BJ2016044）及廊坊师范学院科学研究项目（LSLB201701）。

Hydrogen production from hydrolysis of alkaline sodium borohydride solution using Raney nickel catalyst

WEI Lei, MA Maixia, FU Junyu, GAO Jing, DONG Xiaolong, WEI Piye

School of Chemistry and Materials Science, Langfang Teachers University, Langfang 065000, Hebei, China

Received:2017-03-21 Revised:2017-08-15 Online:2017-12-05 Published:2017-12-05

摘要/Abstract

摘要： 以NiAl合金粉末为原料，经浓碱溶液处理后制得Raney Ni催化剂，并用于催化碱性硼氢化钠溶液水解制氢。通过场发射扫描电子显微镜和氮气吸附/脱附法对催化剂微观物理结构进行表征，考察了硼氢化钠溶液组成、反应温度、催化剂用量和循环使用对体系产氢速率的影响。研究结果表明，当硼氢化钠和氢氧化钠质量分数分别为15%和10%时，产氢速率达到1085mL/（min·g）（25℃）；相应表观活化能为38.6kJ/mol；催化剂用量与单位时间内氢产量成线性关系。循环测试结果表明，经过4次重复使用后，产氢速率降低78%，其原因主要在于硼化物的累积和镍的氧化。

关键词: 制氢, Raney Ni, 硼氢化钠, 水解, 催化

Abstract: In this work, Raney Ni catalyst was prepared by treating the NiAl alloy powder with alkaline solution. The obtained catalyst was then used for the catalytic hydrolysis of sodium borohydride (NaBH₄)solution toward hydrogen generation. Field-emission scanning electron microscopy and nitrogen absorption/desorption method were carried out to characterize the microstructure of the catalyst. Effects of the reaction solution composition, reaction temperature, catalyst amount and reusing operation on the hydrogen generation rate(HGR)were investigated. The results showed that when the concentration of NaBH₄ and NaOH was 15% and 10%, respectively, HGR was as high as 1085mL/(min·g) at 25℃ and the apparent activation energy was measured to be 38.6kJ/mol. A good linear relationship was established between the hydrogen volume per minute and the catalyst amount. The HGR was decreased by 78% after recycled for four times, which could be attributed to the accumulation of boron compounds and the oxidation of nickel.

Key words: hydrogen production, Raney Ni, sodium borohydride, hydrolysis, catalysis

中图分类号:

TQ116.2

魏磊, 马麦霞, 付君宇, 高静, 董晓龙, 魏丕叶. Raney Ni催化碱性硼氢化钠溶液水解制氢[J]. 化工进展, 2017, 36(12): 4462-4467.

WEI Lei, MA Maixia, FU Junyu, GAO Jing, DONG Xiaolong, WEI Piye. Hydrogen production from hydrolysis of alkaline sodium borohydride solution using Raney nickel catalyst[J]. Chemical Industry and Engineering Progress, 2017, 36(12): 4462-4467.

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Raney Ni催化碱性硼氢化钠溶液水解制氢

Hydrogen production from hydrolysis of alkaline sodium borohydride solution using Raney nickel catalyst

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