太原理工大学学报2018，Vol.49Issue(1)：55-60,6.DOI:10.16355/j.cnki.issn1007-9432tyut.2018.01.009
添加Mo,Ce的NiMgAl水滑石基催化剂对CH4-CO2重整反应的影响
Catalytic Performances of NiMgAl Catalysts with Mo and Ce in Carbon Dioxide Reforming of Methane
摘要
Abstract
Hydrotalcite-like precursors were synthesized by conventional co-precipitation method.NiMgAl,NiMgAl-Mo and NiMgAl-MoCe composite oxides derived from the calcination of the precursors were employed as catalysts in carbon dioxide reforming of methane for catalytic performances evaluation.The effect of addition of Mo and Ce as promoters on the catalytic activity was mainly investigated,especially on the reactant gas conversion.X ray diffraction and N2 ad sorption-desorption techniques were employed for the structural investigation of the catalysts.The reduction properties of the catalysts were evaluated via H2 temperature programmed reduction process.The results present that,all the NiMgAl,NiMgAl-Mo and NiMgAl-MoCe catalysts derived from hydrotalcite like compounds presented features of mesoporous materials.The addi tion of Mo and Ce elements to the NiMgAl decreased the BET surface areas and influenced the reduction temperatures of catalysts.The catalytic performance results exhibit that the NiMgAl catalyst afforded the poorest activity with the lowest conversion of both CH4 and CO2 at temperatures from 650 to 1 000 ℃.The addition of Mo to NiMgAl promoted the conversion of both methane and carbon dioxide.However,further addition of Ce to NiMgAl Mo only improved the conversion of methane while the conversion of carbon dioxide was inhibited.关键词
Mo/Ce/NiMgAl/水滑石/CH4-CO2重整/Ni基催化剂/前驱体Key words
Mo/Ce/NiMgAl/HTLcs/CH4-CO2 reforming/Ni-based catalyst/precursor分类
化学化工引用本文复制引用
杜亚丽,成强强,李晓建,李晓东,黄伟..添加Mo,Ce的NiMgAl水滑石基催化剂对CH4-CO2重整反应的影响[J].太原理工大学学报,2018,49(1):55-60,6.基金项目
国家高技术研究发展计划(2013AA051201) （2013AA051201）
国家科技支撑计划项目(2013BAC14B04) （2013BAC14B04）
国家自然科学基金重点资助项目(21336006) （21336006）
