摘要
采用反相微乳液-共沉淀法制备了镧系六铝酸盐催化剂。体系中TX-100作为表面活性剂,正己醇作为助表面活性剂,环己烷作为油相。分别用Fe、Co、Ni、Cu、Mg离子作为活性组分进行掺杂。通过X射线衍射、比表面积分析和扫描电镜等实验技术及甲烷燃烧对催化剂的结构和性质进行考察。结果表明,Fe离子和Mn离子共同掺杂所制备的催化剂LaMnFeAl10O19-δ具有较高的催化活性,起燃温度T10%为477℃,至674℃90%甲烷转化。
Lanthanum hexaaluminates doped with different metal ions（Fe,Co,Ni,Cu,and Mg） were prepared through co-precipitation of metal nitrates in the water phase of a Triton X-100 / n-hexanol / cyclohexane reverse microemulsion and used as thecatalyst in methane combustion.Their structure and properties were characterized by X-ray powder diffraction（XRD）,specificsurface area（BET） and scanning electron microscope（SEM）;the effects of ion dopants on their catalytic performance in methanecombustion were investigated.The lanthanum hexaaluminates doped with Fe and Mn exhibit high catalytic activity and stability formethane combustion at high temperature;over the LaMnFeAl10O19-δ catalyst calcined at 1 200 ℃,the ignition temperature（T10%）and complete combustion temperature（T90%） are 477 ℃ and 674 ℃,respectively.
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2011年第9期717-720,共4页
Journal of Fuel Chemistry and Technology
基金
National Natural Science Foundation of China(21076025)
Education Department Natural Science of Anhui Province(KJ2010B145)
the Applied Chemistry Key Subject of Anhui Province(200802187C)
关键词
六铝酸盐
甲烷催化燃烧
掺杂
hexaaluminate
methane catalytic combustion
modification
