کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10272952 461194 2011 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Selective oxidation of methanol to dimethoxymethane over acid-modified V2O5/TiO2 catalysts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Selective oxidation of methanol to dimethoxymethane over acid-modified V2O5/TiO2 catalysts
چکیده انگلیسی
Selective oxidation of methanol to dimethoxymethane (DMM) was conducted in a fixed-bed reactor over an acid-modified V2O5/TiO2 catalyst. The influence of the acid modification on its structure, redox and acidic properties, and catalytic performance for methanol oxidation were investigated. The results indicated that the content of vanadia in the catalyst exhibits a vital influence on the dispersion of vanadium species, while the acid modification can enhance its surface acidity. Proper amounts of the acid (W(SO42-) = 15%) and V2O5 (W(V2O5) = 15%) components loaded in the acid-modified V2O5/TiO2 catalyst are able to build a bi-functional circumstance that is favorable for the formation of DMM with high activity and selectivity. As a result, for the selective oxidation of methanol, the H2SO4-modified V2O5/TiO2 catalyst gives a much higher DMM yield at 150 °C than the unmodified one.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 90, Issue 4, April 2011, Pages 1335-1339
نویسندگان
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