燃料化学学报2017，Vol.45Issue(8)：956-962,7.
Ca/Al物质的量比对Ni/CaO-Al2O3结构及其催化重整性能的影响
Influence of Ca/Al molar ratio on structure and catalytic reforming performance of Ni/CaO-Al2O3 catalyst
摘要
Abstract
CO2 enhanced sorption methane steam reforming for hydrogen production is a potential approach to economically provide hydrogen and to reduce CO2 emission.The key point for this process is to develop a composite catalyst with high catalytic and adsorptive capacity.Considering the tunable structure of hydrotalcitelike compounds,co-precipitation method was employed to synthesize Ni/CaO-Al2O3 composite catalysts by varying the molar ratio of Ca to Al.The results show that the specific surface area and Ni dispersion of the assynthesized composite catalysts are greatly influenced by molar ratio of Ca to Al,which derives from the variable interaction between Ni and the support.When the molar ratio of Ca to Al is 3,the composite catalyst obtains a specific surface area of 12.9 m2/g and Ni dispersion of 1.07％.Catalytic evaluation shows that the composite catalyst possesses a H2 concentration of 95％ and a CH4 conversion of 88％,and H2 concentration exceeds 93％ even after 10 cyclic runs.关键词
制氢/复合催化剂/类水滑石结构/CO2吸附强化Key words
hydrogen production/composite catalyst/hydrotalcite-like compounds/enhanced CO2 sorption分类
化学工程引用本文复制引用
荆洁颖,王世东,张学伟,李清,李文英..Ca/Al物质的量比对Ni/CaO-Al2O3结构及其催化重整性能的影响[J].燃料化学学报,2017,45(8):956-962,7.基金项目
The project was supported by National Natural Science Foundation of China (21406155,U1361202),Program for the Top Young Academic Leaders of Higher Learning Institutions of Shanxi (164010121-S) and Shanxi Scholarship Council of China (2016-028)国家自然科学基金(21406155,U1361202),山西省高等学校创新人才支持计划(164010121-S)和山西省回国留学人员科研项目(2016-028)资助 （21406155,U1361202）
