سال انتشار: ۱۳۸۶

محل انتشار: دومین کنفرانس نانوساختارها

تعداد صفحات: ۲

نویسنده(ها):

z Karimi – Department of Chemistry, Tarbiat modares University
a.r Mahjoub –
s Janitabar Darzi –

چکیده:

SBA-15 mesoporous silica is synthesized using P123 as surfactant via hydrothermal method. Immobilization of vitamin B12 within SBA-15 mesostructured support is studied for the first time. Synthesis and characterization of vitamin containing mesoporous supports are described using X-ray diffraction (XRD), scanning electron microscopy (SEM), FT-IR, UV-Visible, and thermogravimetric analysis (TGA). The newly synthesized catalyst is investigated for epoxidation reaction of cyclooctene in presence of hydrogen peroxide as oxidant via gas chromatography. Furthermore, effects of temperature, amount of catalyst, and oxidant are also studied. The ultrahigh specific area and highly dispersed catalyst species in SBA-15/vitamin B12 creates one of the most effective and active heterogeneous catalysts.