摘要
为了实现木醋液的高值化利用,在固定床反应器中,进行木醋液催化重整制氢实验,采用浸渍法制备一系列不同Co添加量的Ni基催化剂,以产氢率、碳转化率、H2选择性和积炭量为主要评价指标,探究液时空速、反应温度、镍钴比等工况对木醋液催化重整制氢的影响,同时采用XRF、H2-TPR、SEM及元素分析等方法对催化剂进行了表征。结果表明,液时空速增加,产气量增大,但液时空速过高会加速催化剂失活。高温有利于木醋液的催化重整制氢反应,温度到达900℃时,氢气产率最高。随着钴添加量的增加,反应产生的积炭降低,但氢气产率也会有所下降。因此,当液时空速为60 h−1,温度为800℃时,采用Ni-0.5Co/Al2O3催化剂,最适于木醋液的催化重整制氢实验。
In order to realize high value utilization of wood vinegar, a series of Ni based catalysts with different Co contents prepared by impregnation method were tested in a fixed bed reactor. The effects of liquid space-time velocity, reaction temperature and Ni/Co ratio on hydrogen production, carbon conversion, H2 selectivity and carbon deposition were investigated. The catalysts were characterized by XRF, H2-TPR, SEM and elemental analysis. The results show that the gas production increases with the increase of space-time velocity of liquid, but the catalyst deactivation is accelerated when the space-time velocity of liquid is too high. High temperature is conducive to the catalytic reforming of wood vinegar to produce hydrogen. When the temperature reaches 900 ℃, the hydrogen yield is the highest. With the increase of cobalt content, the carbon deposition and hydrogen yield decrease. Therefore,when the liquid space velocity is 60 h-1 and the temperature is 800 ℃, the Ni-0.5 Co/Al2O3 catalyst is most conducive to the hydrogen production experiment of wood vinegar.
作者
梁昌明
张安东
李志合
李玉峰
王绍庆
易维明
LIANG Chang-ming;ZAHNG An-dong;LI Zhi-he;LI Yu-feng;WANG Shao-qing;YI Wei-ming(College of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255000,China;Shandong Research Center of Engineering&Technology for Clean Energy,Zibo 255000,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2021年第2期168-177,共10页
Journal of Fuel Chemistry and Technology
基金
国家重点研发计划项目(2019YFD1100600)
国家自然科学基金(51606113)
山东省自然科学基金(ZR2020ME185)资助。
关键词
木醋液
重整制氢
镍基催化剂
积炭
wood vinegar
hydrogen from reforming
nickel-based catalyst
carbon deposition
