کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
207306 | 461213 | 2010 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Influence of the calcination on the activity and stability of the Cu/ZnO/Al2O3 catalyst in liquid phase methanol synthesis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
Catalyst Cu/ZnO/Al2O3 was prepared through co-precipitation method and investigated in a stirred slurry autoclave reactor system for methanol synthesis. The structure of the catalysts was studied by derivative thermogravimetry (DTG), X-ray diffraction (XRD) and H2 temperature programmed reduction (H2-TPR). The results show that the average size of CuO crystallite of the catalyst was 3.23 nm when the catalyst was calcined at 623 K for 2.0 h, and the catalyst with this size of CuO crystallite is highly active and stable. Its space time yield and deactivation rate reached 172.2 g/kgcat·h and 0.43%/d, respectively under the reaction conditions of 513 K, 4.0 MPa, H2/CO/CO2 = 68/24/5 and space velocity = 810 ml/gcat·h.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 89, Issue 7, July 2010, Pages 1348–1352
Journal: Fuel - Volume 89, Issue 7, July 2010, Pages 1348–1352
نویسندگان
Xiaobing Zhang, Li Zhong, Qihai Guo, Hui Fan, Huayan Zheng, Kechang Xie,