کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10239240 | 46053 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Fischer-Tropsch synthesis over iron catalysts supported on carbon nanotubes
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
Carbon nanotubes (CNTs) were synthesized in a catalytic reaction over an iron catalyst using CaCO3 as a support. The purification of the carbon nanotubes (CNTs) and the oxidation of the CNTs surfaces were performed with HNO3. Iron-based catalysts supported on carbon nanotubes for use in the Fischer-Tropsch (FT) reaction were prepared either by incipient wetness or a deposition precipitation method using urea and then promoted with potassium and/or copper. The FT synthesis was carried out in a fixed-bed micro reactor (275 °C, 8 bar, CO/H2 = 2). The effect of Cu and promoters on CO conversion, product selectivity and FT synthesis activity were investigated and compared with data reported on other carbon-based supports. The potassium promoted catalysts gave higher yields of CO2 and C2 olefins and the lowest methane selectivity when compared to the unpromoted catalysts. Copper, while enhancing catalyst activity, did not have an effect on the FT product selectivity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 287, Issue 1, 15 June 2005, Pages 60-67
Journal: Applied Catalysis A: General - Volume 287, Issue 1, 15 June 2005, Pages 60-67
نویسندگان
Munga C. Bahome, Linda L. Jewell, Diane Hildebrandt, David Glasser, Neil J. Coville,