کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
75165 49110 2010 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
CTAB-directed synthesis of mesoporous γ-alumina promoted by hydroxy polyacids
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
CTAB-directed synthesis of mesoporous γ-alumina promoted by hydroxy polyacids
چکیده انگلیسی

A new strategy was introduced to synthesize mesoporous γ-Al2O3 by double hydrolysis method using hydroxyl polyacids and CTAB (cetyltrimethylammonium bromide) as co-templates. The intermediate aluminum hydroxides were characterized by IR, XRD and TG. A formation mechanism of the meso-structure is suggested, where hydroxyl polyacids interact with aluminum species and CTAB simultaneously and bridge the interaction between aluminum and CTAB micelle in favor of the genesis of ordered meso-structure. Characterizations by XRD and N2 sorption measurements showed that the resulted mesoporous alumina with γ-Al2O3 phase possessed high surface area (398 m2 g−1), large pore volume (0.59 cm3 g−1) and exhibited good catalytic activity for cyclohexene epoxidation.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 132, Issues 1–2, July 2010, Pages 226–231
نویسندگان
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