摘要
通过高能球磨的方法超细化制备工业级廉价75#硅铁(以下简称FeSi75)制氢剂和FeSi75-MCln(M=Na,Mg,Al;n=1,2,3)(以下简称FeSi75-MCln)复合制氢剂,并用ICP-AES、XRD、SEM、EDS及水解测试装置对制氢剂的成分、物相、形貌和制氢性能进行研究。结果表明,经过30 min球磨,FeSi75合金颗粒平均粒径迅速减小至0.76μm;室温在7.41%(质量分数)的NaOH溶液中水解后的产氢量为710 mL/g;少量氯化物的添加促进了FeSi75的水解制氢,FeSi75-5%(质量分数)AlCl3的产氢量为760 mL/g;70℃下,FeSi75-5%(质量分数)AlCl3的产氢量达到841 mL/g),对应转化率为95.2%,这主要得益于AlCl3溶于水释放了大量的热量和提供水的迁移通道。
The FeSi75 alloy and FeSi75-MCln(M=Na,Mg,Al,n=1,2,3)composites were prepared for hydrogen generation by means of ball-milling,whose phases,morphology and hydrogen generation performances were studied by means of ICP-AES,XRD,SEM,EDS and hydrolysis test equipment.The results showed that the particle size of FeSi75 alloy decreased rapidly down to 0.76μm after 30 min ball-milling.The hydrogen yield of 710 ml/g was achieved in 7.41 wt%NaOH solution at room temperature.Furthermore,the addition of a small amount of chloride promoted the hydrolysis performances of FeSi75 alloy,and the hydrogen yields of FeSi75-5 wt%AlCl3 were 760 ml/g at 25℃and 841 ml/g at 70℃.The conversion rate of 95.2%was achieved at 70℃,which was due to heat release of AlCl3 in water dissolution and formation of water gates.
作者
冯钊
吴朝玲
钟爽
陈云贵
陈辉
王尧
严义刚
FENG Zhao;WU Chaoling;ZHONG Shuang;CHEN Yungui;CHEN Hui;WANG Yao;YAN Yigang(Department of Advanced Energy Materials,College of Materials Science and Engineering,Sichuan University,Chengdu 610064,China;Engineering Research Center of Alternative Energy Materials&Devices,Ministry of Education,Chengdu 610064,China;Institute of New Energy and Low-Carbon Technology,Sichuan University,Chengdu 610207,China)
出处
《功能材料》
EI
CAS
CSCD
北大核心
2020年第9期9072-9077,共6页
Journal of Functional Materials
基金
国家重点研发计划资助项目(2018YFB1502101)
四川省国际科技创新合作/港澳台科技创新合作资助项目(2019YFH0148)
中央高校基本科研业务费专项资金资助项目(2020-10)。
关键词
75#硅铁
高能球磨
水解制氢
复合制氢剂
FeSi75
high energy ball-milling
hydrogen generation
composite hydrogen production agent
