尖晶石MFe2O4(M=Co、Cu、Mg)催化沼气重整制氢研究  

Hydrogen production from biogas reforming over spinel MFe 2O4(M=Co,Cu,Mg)catalysts

作　　者：周亮 姚金刚 易维明[1,2] 刘静 蔡红珍 ZHOU Liang;YAO Jingang;YI Weiming;LIU Jing;CAI Hongzhen(School of Agricultural Engineering and Food Science,Shandong University of Technology,Zibo 255049,China;Shandong Research Center of Engineering and Technology for Clean Energy,Zibo 255049,China)

机构地区：[1]山东理工大学农业工程与食品科学学院,山东淄博255049 [2]山东省清洁能源工程技术研究中心,山东淄博255049

出　　处：《山东理工大学学报（自然科学版）》2020年第5期1-6,10,共7页Journal of Shandong University of Technology:Natural Science Edition

基　　金：国家自然科学基金项目(61473179);淄博市校城融合发展计划项目(2018ZBXC295)。

摘　　要：采用溶胶-凝胶法制备了CoFe2O4、CuFe2O4和MgFe2O43种尖晶石铁氧体催化剂,开展了基于固定床反应器的沼气催化重整制氢研究。利用N 2吸附脱附、X-射线衍射(XRD)、程序升温还原(H 2-TPR)和扫描电镜(SEM)对催化剂的结构进行了表征,并考察了温度、V CH 4和VCO2比值及催化剂的体积空速(GHSV)等因素对氢气和一氧化碳选择性的影响。实验结果表明:自制样品均为尖晶石型铁氧体;各催化剂在催化后仍然保持着尖晶石结构;当V CH 4∶V CO 2=1∶1、GHSV=6000 h-1、在800℃时,尖晶石CuFe2O4表现出最优的性能,获得氢气和一氧化碳选择性为87.60%和89.79%;Cu和载体之间的相互作用有利于消除催化剂积碳,并促进重整反应。The production of hydrogen from the catalytic dry reforming of biogas was investigated in a fixed bed by using MFe 2O4(M=Co,Cu,Mg)catalysts prepared by the sol-gel method.The structures of the catalysts were characterized by N 2 adsorption-desorption,X-ray diffraction(XRD),temperature program reduction(H 2-TPR)and scanning electron microscope(SEM).The effects of the temperature,volume ratio of V CH 4 and VCO2 and gas hourly space velocity(GHSV)on the selectivity of H2 and CO were investigated.The results show that all samples are compounds with spinel ferrite structure,which remains unchanged after catalysis.CuFe2O4 spinel-type catalysts exhibit optimal catalytic performance,and give a H2 selectivity of 87.60%and a CO selectivity of 89.79%at the optimum operational conditions(V CH 4∶V CO 2=1∶1,GHSV=6000 h-1,and temperature=800℃).The interaction between Cu and carrier in the spinel structure was beneficial for the reduction of coke deposition and the dry reforming of biogas。

关 键 词：沼气重整 干气重整 尖晶石铁氧体 制氢 

分 类 号：TK6[动力工程及工程热物理—生物能]