低碳化学与化工2025，Vol.50Issue(10)：19-26,8.DOI:10.12434/j.issn.2097-2547.20250005
三维介孔Ni-ZrO2催化剂甲烷干重整性能研究
Performance study of dry reforming of methane over three-dimensional mesoporous Ni-ZrO2 catalysts
摘要
Abstract
The dry reforming of methane(DRM)reaction efficiently converts two major greenhouse gases,CO2 and CH4,into H2 and CO,thereby achieving resource utilization and holding significant research value.Ni-based catalysts have garnered attention due to their low cost and high activity,but their deactivation caused by coking remains a pressing issue.Three-dimensional mesoporous Ni-ZrO2 catalysts were prepared by colloidal silica-assisted solution combustion method and applied to low-temperature DRM reaction.Characterizations including N2 adsorption/desorption,XRD,H2-TPR,TEM,and TG-DTA were conducted to systematically investigate the structures and the effects of Ni contents(mass fraction,the same below)and reaction temperatures on catalytic performance of catalysts.Comparisons were made with catalysts prepared via ordinary impregnation method and traditional solution combustion method.The results indicate that the catalysts prepared by colloidal silica-assisted solution combustion method exhibit larger specific surface areas,stable three-dimensional mesoporous structures,and have strong metal-support interactions.Regarding catalytic performance,Ni contents significantly affect both anti-coking performances and catalytic activities.As the Ni contents increase,the tendency of catalysts for coking becomes more pronounced.After a 20 h low-temperature DRM reaction at the temperature of 600℃and space velocity of 135000 mL/(g·h),the three-dimensional mesoporous 1%Ni-ZrO2-CSC catalyst maintains CH4 and CO2 conversion rates of 31%and 38%,respectively.The n(H2)/n(CO)stabilizes at 0.45,and no coking is observed,demonstrating 1%Ni-ZrO2-CSC's excellent resistance to coking.关键词
甲烷干重整/Ni-ZrO2/催化剂/硅溶胶辅助溶液燃烧法/三维介孔Key words
dry reforming of methane/Ni-ZrO2/catalysts/colloidal silica-assisted solution combustion method/three-dimensional mesoporous分类
化学化工引用本文复制引用
黄礼智,刘亚丽,魏勤洪,王路辉..三维介孔Ni-ZrO2催化剂甲烷干重整性能研究[J].低碳化学与化工,2025,50(10):19-26,8.基金项目
浙江省自然科学基金联合基金(LZY23B030005) （LZY23B030005）
舟山科技计划(2022C41002). （2022C41002）
