کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
58322 47146 2008 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Catalytic wet air oxidation of gasoline oxygenates using Rh/γ-Al2O3 and Rh/γ-Al2O3–CeO2 catalysts
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Catalytic wet air oxidation of gasoline oxygenates using Rh/γ-Al2O3 and Rh/γ-Al2O3–CeO2 catalysts
چکیده انگلیسی

Catalytic wet air oxidation of gasoline oxygenates (ETBE and TAME) were carried out using Rh/γ-Al2O3, Rh/γ-Al2O3–CeO2 catalysts in a Parr reactor at 100, 120 and 150 °C using oxygen as oxidant source at 10 bar of pressure. Aqueous solutions of ETBE and TAME were prepared using the quantities necessary to obtain 227 ppm. The quantity of catalyst used was 1 g/L. Cerium emphasizes the oxidative capacity of the rhodium catalysts at 100 °C explained by the formation of rhodium oxide sites (Rh2O3) at the surface, detected by TPR and XPS techniques. This capacity has been observed by the high CO2 selectivity due to the support–metal interaction by the formation of Ce4+–O2−–M+ bond which prevents the formation of carboxylic acids intermediate as acetic, the most refractory acid found.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volumes 133–135, April–June 2008, Pages 588–593
نویسندگان
, , , ,