کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7832366 | 1503294 | 2006 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Effects of Cu and K on Co-precipitated FeMn/SiO2 Catalysts for Fischer-Tropsch Synthesis
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Effects of Cu and K on Co-precipitated FeMn/SiO2 Catalysts for Fischer-Tropsch Synthesis Effects of Cu and K on Co-precipitated FeMn/SiO2 Catalysts for Fischer-Tropsch Synthesis](/preview/png/7832366.png)
چکیده انگلیسی
The effects of copper and potassium on the activity and selectivity of coprecipitated Fe-Mn/SiO2 catalysts for Fischer-Tropsch synthesis (FTS) were studied in a slurry phase continuous stirred tank reactor. The reduction and adsorption behaviors of the catalysts were investigated using temperature-programmed reduction/temperature-programmed desorption (TPR/TPD) methods. It was found that copper improves the reduction of the catalyst in H2 or CO. Potassium improves the reduction of the catalyst in CO, whereas it suppresses the reduction of the catalyst in H2. Copper enhances the H2 adsorption, whereas potassium has no influence on the H2 adsorption. In the FTS reaction, copper shortens the induction period required for reaching the steady state activity, whereas potassium prolongs the induction period. The potassium promoter increases the activity and decreases the selectivity of methane. The promotion effects of Cu and K on the activity and selectivity is more obvious than that of Cu, that is, the activity is higher and the methane selectivity is lower on the doubly promoted catalyst.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Acta Physico-Chimica Sinica - Volume 22, Issue 11, November 2006, Pages 1310-1316
Journal: Acta Physico-Chimica Sinica - Volume 22, Issue 11, November 2006, Pages 1310-1316
نویسندگان
Chenghua Zhang, Yong Yang, Zhichao Tao, Tingzhen Li, Haijun Wan, Hongwei Xiang, Yongwang Li,