燃料化学学报2018，Vol.46Issue(6)：673-679,7.
焙烧温度对Ni/CaO-Al2O3结构及其催化重整性能的影响
Influence of calcination temperature on the structure and catalytic reforming performance of Ni/CaO-Al2O3 catalyst
摘要
Abstract
Considering the tunable structure of hydrotalcite-like compounds, co-precipitation method was employed to synthesize Ni/CaO-Al2O3composite catalysts.The influence of calcination temperature on the structure and catalytic reforming performance of Ni/CaO-Al2O3catalyst investigated.The results showed that the specific surface area and Ni particle size of the as-synthesized composite catalysts were greatly affected by calcination temperature of the precursor derived from the variable interaction between the Ni and the support.When the calcination temperature was 700 ℃, the composite catalyst obtained a specific surface area of 21.42 m2/g and Ni particle size of 19.51 nm.The catalytic evaluation showed that the composite catalyst possessed a H2concentration of 98.31 % and a CH4conversion of 94.87 % , and H2concentration exceeded 97.35% even after 10 cyclic runs.The high catalytic activity was ascribed to the higher specific surface area, which provided more active sites and enhanced CO2sorption.The smaller Ni particle size improved the anti-sintering capacity of the composite catalyst, endowing the composite catalyst superior stability.关键词
制氢/CO2吸附强化/复合催化剂/焙烧温度/类水滑石结构Key words
hydrogen production/enhanced CO2 sorption/composite catalyst/calcination temperature/hydrotalcite-like compounds分类
化学化工引用本文复制引用
荆洁颖,张子毅,王世东,李文英..焙烧温度对Ni/CaO-Al2O3结构及其催化重整性能的影响[J].燃料化学学报,2018,46(6):673-679,7.基金项目
The project was supported by National Natural Science Foundation of China ( 21406155 ), Natural Science Foundation of Shanxi Province (201701D221237) and Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi (164010121-S).国家自然科学基金(21406155), 山西省自然科学基金(201701D221237)和山西省高等学校创新人才支持计划(164010121-S)资助 （ 21406155 ）
