燃料化学学报2017，Vol.45Issue(2)：189-193,5.
Al的加入对CeZr固溶体催化剂结构及其乙苯脱氢活性的影响
Effects of Al doping on CeZr solid solution for oxidative dehydrogenation of ethylbenzene with CO2
摘要
Abstract
For improving the oxygen storage/release capacity of ceria-zirconia solid solution, Ce0. 5 Zr0. 5 O2-Al2 O3 mixed oxides were prepared by a co-precipitation method and applied in the oxidative dehydrogenation of ethylbenzene to styrene with carbon dioxide. Ce0. 5 Zr0. 5 O2-Al2 O3 mixed oxides were characterized by powder X-ray diffraction, Raman spectroscopy, N2-sorption, H2 temperature-programmed reduction, and X-ray photoelectron spectroscopy. Results show that Al2 O3 acts as a diffusion barrier. The addition of Al prevents the growth of Ce0. 5 Zr0. 5 O2 crystallite size, increases the specific surface area and oxygen storage capacity of Ce0. 5 Zr0. 5 O2-Al2 O3 mixed oxides. The specific surface area and oxygen storage capacity of Ce0. 5 Zr0. 5 O2-Al2 O3 mixed oxides are 51. 8 m2/g higher and 69. 4 μmol/g more than those of Ce0. 5 Zr0. 5 O2 mixed oxides. The ethylbenzene conversion over Ce0. 5 Zr0. 5 O2-Al2 O3 mixed oxides is about 10% higher than that over Ce0. 5 Zr0. 5 O2 mixed oxides after 5 h reaction.关键词
铈锆固溶体/氧化铝/储放氧性能/乙苯脱氢/二氧化碳Key words
ceria-zirconia solid solution/alumina/oxygen storage/release capacity/dehydrogenation of ethylbenzene/carbon dioxide分类
化学化工引用本文复制引用
吴彦丽,赵伟杰,李晓红,李文英..Al的加入对CeZr固溶体催化剂结构及其乙苯脱氢活性的影响[J].燃料化学学报,2017,45(2):189-193,5.基金项目
The project was supported by the National High Technology Research and Development Program (863 program,2011AA05A204).国家高技术研究发展计划(863计划,2011AA05A204)资助 （863 program,2011AA05A204）
