低碳化学与化工2025，Vol.50Issue(12)：11-20,10.DOI:10.12434/j.issn.2097-2547.20250087
Cs、In掺杂Ni/MgAl(O)催化剂的甲烷二氧化碳干重整反应抗积炭性能研究
Study on coke resistance performances of Cs,In doped Ni/MgAl(O)catalysts in dry reforming reaction of methane and carbon dioxide
摘要
Abstract
Dry reforming of methane and carbon dioxide(DRM)is a promising"carbon-neutral"industrial catalytic process.However,the process suffers from the problem of catalyst deactivation due to coke deposition.Current researches on DRM catalysts primarily focus on single-factor regulation of active metals,while studies on the synergistic regulation between supports and active metals remain relatively limited.Based on the Ni/MgAl2O4 catalyst,a series of Ni-based catalysts and Cs,In doped Ni-based catalysts with the constant Ni mass fraction of 2%were prepared by co-precipitation method.Combining with various characterization techniques such as XRD,H2-TPR,and CO2-TPD,the effects of n(MgO)∶n(Al2O3)as well as Cs,In doping on catalyst structures and DRM catalytic performances were investigated,and the anti-coking mechanism of catalysts was analyzed.The results indicate that after reaction for 120 h under the conditions of temperature of 1073 K,pressure of 0.1 MPa,V(CO2)∶V(CH4)of 1∶1 and space velocity of 72000 mL/(g·h),the catalyst with n(Cs)∶n(In)∶n(Ni)of 1∶1∶5 and n(MgO)∶n(Al2O3)of 3∶1(Cs0.2In0.2-Ni/MAN-3)exhibits optimal catalytic and coke resistance performances,while its CH4 conversion rate and CO2 conversion rate are 76.3%and 79.5%,respectively,and the TG weight loss(mass fraction)is 2.0%.关键词
干重整反应/Ni基催化剂/抗积炭性能/Mg-Al尖晶石/Cs、In掺杂Key words
dry reforming reaction/Ni-based catalysts/coke resistance performances/Mg-Al spinel/Cs,In doping分类
能源科技引用本文复制引用
袁亨源,王昊,刘小梁,陈伟,刘志成,朱卡克..Cs、In掺杂Ni/MgAl(O)催化剂的甲烷二氧化碳干重整反应抗积炭性能研究[J].低碳化学与化工,2025,50(12):11-20,10.基金项目
国家自然科学基金(22250005,U1663221) （22250005,U1663221）
中国石油化工股份有限公司资助项目(222215). （222215）
