کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10239107 | 46023 | 2005 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Vanadium incorporated ammonium salt of 12-molybdophosphoric acid supported on titania: Effect of loading on the activity and selectivity of the catalysts during ammoxidation of 2-methylpyrazine
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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![عکس صفحه اول مقاله: Vanadium incorporated ammonium salt of 12-molybdophosphoric acid supported on titania: Effect of loading on the activity and selectivity of the catalysts during ammoxidation of 2-methylpyrazine Vanadium incorporated ammonium salt of 12-molybdophosphoric acid supported on titania: Effect of loading on the activity and selectivity of the catalysts during ammoxidation of 2-methylpyrazine](/preview/png/10239107.png)
چکیده انگلیسی
A series of catalysts was synthesized with varying quantities of vanadium incorporated into the ammonium salt of 12-molybdophosphoric acid (AMPV) supported on titanium dioxide. The catalysts were characterized by XRD, FT-IR, TPD of ammonia and XPS techniques. The characterization data derived from XRD, FT-IR and XPS techniques reveal that the AMPV on titania support exists in the Keggin structure. These catalysts are studied for the vapor phase ammoxidation of 2-methylpyrazine (MP) to cynopyrazine (CP). The conversion of methylpyrazine increased with increase in loading on titania showing a maximum at 20Â wt.% AMPV loading. A comparative study has been made among the catalytic functionalities of the 12-molybdophosphoric acid, its ammonium salt and vanadium incorporated ammonium salt. Vanadium incorporation led to substantial improvement in the selectivity to cynopyrazine.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Catalysis A: General - Volume 296, Issue 1, 29 November 2005, Pages 108-113
Journal: Applied Catalysis A: General - Volume 296, Issue 1, 29 November 2005, Pages 108-113
نویسندگان
K. Mohan Reddy, N. Lingaiah, K.N. Rao, Nilofer Rahman, P.S. Sai Prasad, I. Suryanarayana,