کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9617772 | 49168 | 2005 | 10 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Studies on structural properties, surface acidity and benzene isopropylation activity of sulphated ZrO2-TiO2 mixed oxide catalysts
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
A series of sulphated ZrO2-TiO2 mixed oxide with different nominal sulphate loadings in the range of 2-15Â wt.% was prepared and characterized for their structural properties, surface acidity and benzene isopropylation activity. The catalyst with 10Â wt.% nominal sulphate loading showed highest surface area and uniform pore size distributions. Surface acidity, measured by NH3-TPD method, showed increase in acidity with sulphate loading and the 10Â wt.% sulphate loaded catalyst showed highest acidity. The activities of these catalysts were tested for isopropylation of benzene to cumene using 2-propanol as the alkylating agent. The 10Â wt.% sulphate-loaded catalyst also showed highest activity for this reaction with â¼97% cumene selectivity. The higher activity of this catalyst was attributed to its higher acidity.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Microporous and Mesoporous Materials - Volume 80, Issues 1â3, 2 May 2005, Pages 327-336
Journal: Microporous and Mesoporous Materials - Volume 80, Issues 1â3, 2 May 2005, Pages 327-336
نویسندگان
D. Das, H.K. Mishra, N.C. Pradhan, A.K. Dalai, K.M. Parida,