کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
62981 47665 2007 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Superior performance in deep saturation of bulky aromatic pyrene over acidic mesoporous Beta zeolite-supported palladium catalyst
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Superior performance in deep saturation of bulky aromatic pyrene over acidic mesoporous Beta zeolite-supported palladium catalyst
چکیده انگلیسی

Palladium species were loaded into mesoporous Beta zeolite (Beta-H), and transmission electron microscopy images showed that the Pd particles are located in both mesopores and micropores. As a model reaction, the deep hydrogenation of bulky aromatic pyrene showed that the Pd/Beta-H catalyst exhibits higher activity than Pd/Beta, Pd/Al-MCM-41, and Pd/γ-Al2O3 catalysts. The superior performance of the Pd/Beta-H catalyst is attributed to its unique porous structure and acidity. The mesoporous volume in Beta-H (0.17 cm3/g) is greater than that of Beta (0.06 cm3/g), which is advantageous for adsorption and mass transport of pyrene over Pd/Beta-H catalyst. The amount of acidic sites is greater on Beta-H (480 μmol/g) than on Al-MCM-41 (280 μmol/g) and γ-Al2O3 (220 μmol/g), which also favors improved catalytic activity in hydrogenation of pyrene over Pd/Beta-H catalyst.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 249, Issue 1, 1 July 2007, Pages 111–115
نویسندگان
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