پديد آورنده :
علي بوري، مهرداد
عنوان :
ساخت كاتاليست هيدرودي سولفوريزاسيون بر پايه نانو ساختار سيليكاتي با حفره هاي متوسط در محيط سيال فوق بحراني
گرايش تحصيلي :
مهندسي شيمي
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده مهندسي شيمي
صفحه شمار :
هفده،120، [II] ص: جدول، نمودار
يادداشت :
ص.ع.به : فارسي و انگليسي
استاد راهنما :
محمد قريشي، حميد رضا آقابزرگ
استاد مشاور :
حسن قاضي عسگر
توصيفگر ها :
نانوكاتاليست , گوگردزدايي , پايه HMS
تاريخ نمايه سازي :
21/2/88
استاد داور :
كيقباد شمس، مهران غياثي، اكبر ايراندوخت
كد ايرانداك :
ID227 دكتري
چكيده فارسي :
به فارسي وانگليسي:قابل رويت درنسخه ديجيتال
چكيده انگليسي :
Synthesis of HDS nanocatalysts on HMS nanostructure via supercritical deposition Mehrdad Alibouri alibourim@ripi ir March 07 2009 Department of chemical engineering Isfahan University of Technology Isfahan 84156 83111 Iran Degree Ph D Language Farsi S M Ghoreishi ghoreshi@cc iut ac irAbstract In this thesis Ni Mo and Co Mo nanocatalysts supported on the hexagonal mesopores silica HMS and Al2O3 were prepared via the supercritical fluid deposition method SCFD using supercritical CO2 methanol solution In this route the supports were impregnated with Ni NO3 2 6H2O Co NO3 2 6H2O andMo CO 6 The resulting composites were converted to Ni Mo and Co Mo nanocatalysts via calcinations Methanol as co solvent enhanced the dissolution of the precursors in supercritical CO2 In addition forstudy of the effect of this method some samples were prepared using conventional impregnation IMP Forcharacterization of the prepared samples adsorption desorption of nitrogen oxygen chemisorpsion XRD TEM EDAX and TPR were applied The results showed high and uniform dispersed deposition of metaloxides on the supports for the SCFD nanocatalysts The hydrodesulfurization of fuel model dibenzothiophene in n heptane was used for catalytic activity evaluation of the SCFD nanocatalysts IMPand commercial COM catalysts The results indicated that supercritical impregnation method of metalprecursors into support has a positive effect on the catalyst activity The results showed higher conversionfor the nanocatalysts in contrast to IMP and COM catalysts in hydrodesulfurization of dibenzothiophene The kinetic analysis of the reaction data was carried out to calculate the reaction rate constant of thecatalysts in the temperature range of 260 330 oC The frequency factor and activation energy of thehydrodesulfurization were calculated for the all catalysts using Arrhenius law Furthermore addition oftoluene as an aromatic compound in the feed showed less inhibition effect of SCFD nanocatalysts withrespect to those of the IMP and COM catalysts Key WordsSupercritical deposition Hexagonal mesoporous structure Nanocatalyst Hydrodesulfurization
استاد راهنما :
محمد قريشي، حميد رضا آقابزرگ
استاد مشاور :
حسن قاضي عسگر
استاد داور :
كيقباد شمس، مهران غياثي، اكبر ايراندوخت
