کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
7702292 | 1496856 | 2018 | 36 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ultrasound-assisted impregnation for high temperature Fischer-Tropsch catalysts
ترجمه فارسی عنوان
اشباع سونوگرافی برای کاتالیزورهای فیشر تروپش با درجه حرارت بالا
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی (عمومی)
چکیده انگلیسی
A fraction of the petroleum extracted from oil reservoirs contains associated natural gas. Rather than building infrastructure to recover low volumes of this natural gas, the industry flares or vents it to the atmosphere, which contributes to atmospheric greenhouse gas emissions but also reduces the air quality locally because it contains gaseous sulphur and nitrogen compounds. Converting the natural gas (NG) to hydrocarbons with a small-scale two-step gas-to-liquids process, is an alternative to flaring and venting. In the first step, NG reacts with oxygen to form syngas (Catalytic Partial Oxidation) and in the second step the syngas reacts over metallic catalysts to form higher paraffins at 210â¯Â°C to 300â¯Â°C-Fischer Tropsch synthesis (FT). For the first time, we synthesize bimetallic FeCo FT catalysts with ultrasound. An ultrasonic horn agitates the solution during the entire impregnation process. The active phase dispersion of the sonicated catalysts was superior to the catalyst synthesized without ultrasound, while reducing the impregnation time by a factor of three. We tested our catalysts in a lab-scale, fixed-bed reactor at 270â¯Â°C and 300â¯Â°C, and achieved 80% conversion over 3-days on stream and a 40% yield of C2+.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ultrasonics Sonochemistry - Volume 48, November 2018, Pages 523-531
Journal: Ultrasonics Sonochemistry - Volume 48, November 2018, Pages 523-531
نویسندگان
Paul Louyot, Cristian Neagoe, Federico Galli, Carlo Pirola, Gregory S. Patience, Daria C. Boffito,