کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610126 | 47167 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Oxidative dehydrogenation of methanol in a microstructured reactor
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
Microstructured reactors were fabricated on silicon by deep reactive ion etching and were used to study the catalytic oxidative dehydrogenation of methanol to formaldehyde on silver catalyst at temperature up to 823Â K. The reaction was carried out with higher oxygen concentration than that typically used in conventional lab-scale or larger reactors. Even when the reaction was performed with undiluted oxygen, conversion of methanol 60-75% with selectivity â¼90% was obtained. The reaction was carried out safely at conditions within the flammability limits. Effect of temperature, methanol concentration and residence time was also studied. The results show that the reaction was ca. 0.5 order with respect to methanol. Conversion increased with temperature almost linearly within the temperature range studied, with a slight decrease in selectivity to formaldehyde. The benefits of using microreactors for studying highly exothermic reactions were demonstrated, by comparing the silicon microreactor performance with that of a small quartz tube reactor.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 110, Issues 1â2, 15 December 2005, Pages 154-163
Journal: Catalysis Today - Volume 110, Issues 1â2, 15 December 2005, Pages 154-163
نویسندگان
Enhong Cao, Asterios Gavriilidis,