کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
10241335 46545 2005 14 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Influence of the preparation method on the structure-activity of cobalt oxide catalysts supported on alumina for complete benzene oxidation
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Influence of the preparation method on the structure-activity of cobalt oxide catalysts supported on alumina for complete benzene oxidation
چکیده انگلیسی
The application of the nta-pvi technique resulted to very low values for the ratios mentioned above. This is because the [Co(II)-nta]− and [Co(II)-2nta]4− complexes, in which the Co(H2O)62+ complex is completely transformed, are not practically adsorbed on the support surface. Therefore, in the nta-pvi catalysts a precipitated phase containing the [Co(II)-nta]−·NH4+(or H+) and [Co(II)-2nta]4−·4NH4+ (or 4H+) complex salts predominates. Upon calcination these are transformed into Co3O4 crystallites of small size, which are moderately interacting with the support surface. This is related with the relatively high Co dispersion, mainly that for the catalytically active species, and thus with high catalytic activity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis B: Environmental - Volume 57, Issue 4, 26 May 2005, Pages 299-312
نویسندگان
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