کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
44333 46015 2007 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Low-temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2Cl3 precursor
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Low-temperature CO oxidation on Au/fumed SiO2-based catalysts prepared from Au(en)2Cl3 precursor
چکیده انگلیسی

Many gold catalysts have been actively surveyed, but Au/SiO2 catalysts that are highly active for CO oxidation still remain evasive. In this work, gold nanoparticles well dispersed on Cab-O-Sil fumed SiO2 were prepared using Au(en)2Cl3 (en = ethylenediamine) as the precursor, and found to be very active for CO oxidation below 0 °C. The catalyst pretreatment via reduction and calcination, effect of gold loading, post-treatment in acidic and basic media, catalyst deactivation, storage, regeneration, and effect of surface modification by other metal oxides were explored. The results provide new perspective on the activation and promotion of active Au/SiO2-based catalysts.

Highly dispersed gold nanoparticles on Cab-O-Sil fumed SiO2, which were prepared using Au(en)2Cl3 (en = ethylenediamine) as the precursor, were found to be highly active for CO oxidation below 0 °C. Effects of catalyst pretreatment, gold loading, post-treatment, catalyst deactivation, storage, regeneration, and surface coating of other metal oxides were systematically studied.Figure optionsDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 326, Issue 1, 30 June 2007, Pages 89–99
نویسندگان
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