کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
64564 48361 2016 7 صفحه PDF سفارش دهید دانلود کنید
عنوان انگلیسی مقاله ISI
Highly efficient epoxidation of cyclohexene with aqueous H2O2 over powdered anion-resin supported solid catalysts
ترجمه فارسی عنوان
اپوکسیداسیون بسیار کارآمد از سیکلو با H2O2 آبی بر روی کاتالیزورهای جامد با پشتیبانی آنیون ـ رزین پودر شده
کلمات کلیدی
رزین آنیون کلرید فرم پودر شده؛ اسید فسفوتنگستیک Peroxo ؛ اپوکسیداسیون؛ سیکلو؛ H2O2
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• An anion-exchange of powdered chloride-form resin with peroxo phosphotungstic acid is conducted.
• D201-peroxo phosphotungstic acid is highly active for the epoxidation of cyclohexene with H2O2.
• 92.4 mol% conversion and 98.1% selectivity of epoxide is achieved.
• The catalysts are highly reusable heterogeneous ones.

Resin supported solid acid catalysts have extended the application of conventional solid acid catalysts in the field of selective oxidations. The present work describes selectively catalytic epoxidation of cyclohexene with aqueous 30% H2O2 over powdered anion-resin supported peroxo phosphotungstic acid heterogeneous catalysts prepared through a simple anion-exchange from powdered chloride-form anion resin without any special pre-exchanged treatment. Among these powdered solid catalysts, anion-exchanged resin D201 supported peroxo phosphotungstic acid exhibits the best activity for the titled reaction to obtain 92.4 mol% conversion and 98.1% selectivity of epoxide, for which D201-PWAR(4) behaves as a truly heterogeneous catalyst. Some factors such as various peroxo phosphotungstic acid concentrations, the oxidants, the solvents, the molar ratios of H2O2/cyclohexene, the catalyst amount, the reaction temperature and time play important roles in controlling the epoxidation.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Catalysis A: Chemical - Volume 423, November 2016, Pages 393–399
نویسندگان
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