کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
4757708 | 1419843 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CO2 hydrogenation to hydrocarbons over alumina-supported iron catalyst: Effect of support pore size
ترجمه فارسی عنوان
هیدروژناسیون سیگنال به هیدروکربن ها بر روی کاتالیزور آهن پشتیبانی شده از آلومینا: اثر اندازه مخروط پشتیبانی
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
چکیده انگلیسی
The effect of support pore size of FeK/Al2O3 catalysts on the catalytic performance in CO2 hydrogenation reaction was investigated. A total of 8 iron-based catalysts supported on alumina with different pore size were prepared by incipient wetness impregnation where the amount of Fe and K were fixed at 15 and 10Â wt%, respectively. N2 adsorption/desorption, XRD, TPR and PZC were used to characterize the supports and catalysts. The results show that the support pore size impacts the size of Fe2O3 particles formed in the catalyst; increasing pore size of Al2O3 supports led to increased size of Fe2O3 particles formed in the pores. Catalyst pore sizes of 7-10Â nm and the corresponding Fe2O3 particle sizes of 5-8Â nm were the most active for CO2 hydrogenation to hydrocarbons. Outside this range, larger pore size further decrease the iron dispersion and reduce the number of active sites; smaller pore size is not favorable on account of the too small Fe2O3 particle sizes and lower reducibility of the small particle.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of CO2 Utilization - Volume 19, May 2017, Pages 202-208
Journal: Journal of CO2 Utilization - Volume 19, May 2017, Pages 202-208
نویسندگان
Tianze Xie, Jianyang Wang, Fanshu Ding, Anfeng Zhang, Wenhui Li, Xinwen Guo, Chunshan Song,