کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10239283 | 46055 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
CO2-reforming of methane over Ni/SiO2 catalyst prepared by homogeneous precipitation in sol-gel-derived silica gel
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Ni/SiO2 catalysts with Ni content up to 50 wt.% were prepared by depositing nickel hydroxides in a sol-gel-derived wet silica gel, where nickel hydroxides were produced by the increase in pH due to the decomposition of urea. The Ni dispersion in the resulting catalysts is relatively high, and increases monotonically with increasing Ni content up to 40 wt.%. The Ni/SiO2 catalysts have large volume and large-sized mesopores at â¤20 wt.% Ni-loading, and have high thermal stability. In the CO2-reforming of methane, the catalytic activity proportionally increases with increasing Ni content at reaction temperatures between 500 and 900 °C. High and steady catalytic activity is achieved when we use the Ni/SiO2 catalysts with Ni content of 20 wt.% under the reaction conditions of high space-time velocity and high temperature.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 286, Issue 1, 26 May 2005, Pages 142-147
Journal: Applied Catalysis A: General - Volume 286, Issue 1, 26 May 2005, Pages 142-147
نویسندگان
Ryoji Takahashi, Satoshi Sato, Toshiaki Sodesawa, Satoshi Tomiyama,