کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6530646 | 1419885 | 2017 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of Ca/Al molar ratio on structure and catalytic reforming performance of Ni/CaO-Al2O3 catalyst
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
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 hydrotalcite-like 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 as-synthesized 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 12.92 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.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fuel Chemistry and Technology - Volume 45, Issue 8, August 2017, Pages 956-962
Journal: Journal of Fuel Chemistry and Technology - Volume 45, Issue 8, August 2017, Pages 956-962
نویسندگان
Jie-ying JING, Shi-dong WANG, Xue-wei ZHANG, Qing LI, Wen-ying LI,