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Catalytic Application of Molybdenum Hexa-Car bonyl Sup ported on Functionalized Nano-Boehmite

عنوان مقاله: Catalytic Application of Molybdenum Hexa-Car bonyl Sup ported on Functionalized Nano-Boehmite
شناسه ملی مقاله: ISPTC15_0919
منتشر شده در پانزدهمین سمینار شیمی فیزیک ایران در سال 1391
مشخصات نویسندگان مقاله:

b Bahra mian - Department of Chemistry, Shahrood University of Technology, S hahrood, Semn an, Iran
m M irzaee - Department of Chemistry, Shahrood University of Technology, S hahrood, Semn an, Iran
a.a amoli - Department of Chemistry, Shahrood University of Technology, S hahrood, Semn an, Iran
m Mir ebrahimi - Department of Chemistry, Shahrood University of Technology, S hahrood, Semn an, Iran

خلاصه مقاله:
Supported metal complexes as heterogeneous catalys t have been used extensively for a wide variet y of applic ations. In t hese systems, the most important phenomenon is the catalyst elucidation from the support which will be overcom e by use of covalent bonding of metal complexes to the f unctionaliz ed support.Meth ods:Hydrothermal assisted sol-gel derived n ano-boehmite with high surface ar ea (۳۲۶m۲/g) and high d egree of surface hydroxyl groups [۱, ۲], was used in this research. ۱ g nano-boehmite was r efluxed with ۰.۳۵mmol ۳-(tri-meth oxysilyl)propyl amine in toluene fo r ۲۴hr. The n the termin al amine g roup changed to imine by refluxing the ab ove product with ۰.۳۵mmol salicylaldehydein ethanol for ۱۶ hours (IFNB). Then ۱.۰۵mmol Molybdenu m hexa-carbonyl was s upported on IFNB by refluxing in T HF for ۶ h ours. This s upported catalyst was u sed in epoxi dation of ۰.۷ mmol cis-cyclooctene and yields of products w ere investig ated by GC . The catalytic procedu re was opti mized for different parameters suc h as amou nt of catalyst (۵-۳۰mg) , solvent (۱-۳ml), oxidant (۰.۲۸-۱.۶۸mmol), temperatur e (۲۵-۸۰ºC) and time (۳۰-۱۸۰min).

کلمات کلیدی:
Sol-gel method, Heterogene ous catalyst,alkene epo xidation, Molybdenum hexa-carbo nyl, nano-Bo ehmite

صفحه اختصاصی مقاله و دریافت فایل کامل: https://civilica.com/doc/1364231/