کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9608057 | 46039 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Low temperature methanol synthesis from carbon monoxide and hydrogen over ceria supported copper catalyst
دانلود مقاله + سفارش ترجمه
دانلود مقاله ISI انگلیسی
رایگان برای ایرانیان
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
High catalytic activity in the methanol synthesis from carbon monoxide and hydrogen can be produced with ceria supported copper catalysts prepared by a coprecipitation method at a reaction temperature below 200 °C. In comparison with commercial copper-zinc catalysts, the equivalent activity is obtained at a lower reaction temperature by 60 °C, while it is still unstable. Although the reaction atmosphere is reductive, metallic copper particles formed in the pretreatment with hydrogen are oxidized and the catalyst is highly activated. The size of the copper oxide species produced is significantly small, showing dispersion of copper on cerium oxide during the reaction. Hence, the interaction between copper and cerium oxide is probably indispensable for the appearance of the high catalytic activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 282, Issues 1â2, 30 March 2005, Pages 221-226
Journal: Applied Catalysis A: General - Volume 282, Issues 1â2, 30 March 2005, Pages 221-226
نویسندگان
Wen-Jie Shen, Yuichi Ichihashi, Yasuyuki Matsumura,