کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
55789 47063 2011 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Highly selective synthesis of enones from benzylic compounds over CrSBA-15
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Highly selective synthesis of enones from benzylic compounds over CrSBA-15
چکیده انگلیسی

Mesoporous CrSBA-15 catalysts synthesized with a variety of nSi/nCr ratios by pH-aDH method were used in the production of enones by the liquid-phase oxidation of benzylic compounds. To investigate the leaching of chromium species on the silica surface, CrSBA-15(8) was chemically treated with ammonium acetate solution while the Cr-containing mesoporous silica catalysts used for these reactions were regenerated by washing and calcinations. The treated catalysts such as washed CrSBA-15 and regenerated CrSBA-15 catalyst were used/reused in these reactions to find their catalytic activities. Furthermore, the influences of various reaction parameters such as temperature, time, ratios of reactant and solvents on the synthesis of tetraline (TO) have been systematically investigated. Based on the catalytic investigations, CrSBA-15(8) catalyst is found to be a highly active, recyclable and promising heterogeneous catalyst for the selective synthesis of enones, and it has superior catalytic activity in the oxidation of benzylic compounds than CrMCM-41.

Figure optionsDownload high-quality image (172 K)Download as PowerPoint slideHighlights
► CrSBA-15 synthesized by pH-adjusting direct hydrothermal method.
► Oxidation of tetralin over CrSBA-15.
► Oxidation of benzylic compounds over CrSBA-15.
► Highly selective synthesis of enones.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 175, Issue 1, 25 October 2011, Pages 546–551
نویسندگان
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