کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5147604 | 1497355 | 2017 | 11 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Enhanced activity of CO2 methanation over mesoporous nanocrystalline Ni-Al2O3 catalysts prepared by ultrasound-assisted co-precipitation method
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
الکتروشیمی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Enhanced activity of CO2 methanation over mesoporous nanocrystalline Ni-Al2O3 catalysts prepared by ultrasound-assisted co-precipitation method Enhanced activity of CO2 methanation over mesoporous nanocrystalline Ni-Al2O3 catalysts prepared by ultrasound-assisted co-precipitation method](/preview/png/5147604.png)
چکیده انگلیسی
The ultrasound-assisted co-precipitation method was employed for the synthesis of the Ni-Al2O3 catalysts with different metal loadings for the CO2 methanation reaction. This study indicated that increasing the Ni loading up to 25 wt.% enhanced the surface area, decreased the crystallinity and improved the reducibility of the catalysts, while further raise in Ni loading adversely influenced the surface area. Improvements in catalytic performance were obtained with the raise in Ni content because of enhancing the BET area. The results confirmed that the 25Ni-Al2O3 catalyst with the highest BET area (188 m2 gâ1) and dispersion of Ni has the highest catalytic activity in CO2 methanation and reached to 74% CO2 conversion and 99% CH4 selectivity at 350 °C. In addition, this catalyst exhibited a great stability after 10 h time-on-stream.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 22, 1 June 2017, Pages 15115-15125
Journal: International Journal of Hydrogen Energy - Volume 42, Issue 22, 1 June 2017, Pages 15115-15125
نویسندگان
Reihaneh Daroughegi, Fereshteh Meshkani, Mehran Rezaei,