پديد آورنده :
حيدري، ياسمن
عنوان :
سنتز كربنات هاي آلي حلقوي با استفاده از دي اكسيد كربن و اپو كسيد
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
پانزده، [118]ص.: مصور، جدول، نمودار
يادداشت :
ص.ع. به فارسي و انگليسي
استاد راهنما :
عبدالرضا حاجي پور
استاد مشاور :
غلامرضا كوزه گري
توصيفگر ها :
واكنش حلقه زايي , كربنات حلقوي
استاد داور :
ايرج محمدپور بلترك، عليرضا نجفي چرمهيني، حسين توكل
تاريخ ورود اطلاعات :
1395/08/29
كد ايرانداك :
ID947 دكتري
چكيده انگليسي :
Cyclic carbonate synthesis from carbon dioxide and epoxides Yasaman Heidari E mail y heidari@ch iut ac ir Department of chemistry Isfahan University of Technology 84156 83111 Isfahan Iran Supervisor s Name Abdol Reza Hajipour E mail address haji@cc iut ac ir Advisor s Name Gholamreza KozehgaryDepartment Graduate Program Coordinator Alireza Najafi Chermahini Pharmaceutical Research Laboratory Department of Chemistry Isfahan University of Technology Isfahan84156 Islamic Republic of Iran Department of Chemistry Shahid Beheshti University G C Evin Tehran IranAbstractIn this thesis various homogeneous and heterogeneous catalytic systems have beendeveloped for the synthesis of cyclic carbonates from epoxides and CO2 under solvent lessconditions Initially ammonium salts based on nicotine and 1 4 diazabicyclo 2 2 2 octane DABCO containing tertiary nitrogen in order to activate carbon dioxide wasexamined In these systems halide anions play an essential role in epoxide ring opening Silica supported nicotinum halids were prepared by quaternization of nicotine with silica supported alkyl halides and then their catalytic activity was investigated in thecycloaddition reaction Catalysts based on nicotine showed higher catalytic activitycompared to those based on DABCO In order to improve catalytic activity DABCO based ammonium salts immobilized onfunctionalized silica and the presence of organic phase on the silica was confirmed withFT IR spectroscopy elemental analysis titrimetric analysis inductively coupled plasmaanalysis ICP TGA DTA techniques and Brunauer Emmett Teller BET Then thecatalytic performance of them was evaluated in cycloaddition reaction The resultsexhibited that immobilized N Benzyl DABCO bromide to be highly efficient forcycloaddition reaction and exhibited a higher catalytic activity than its homogeneousanalog Although all of these catalysts exhibited excellent catalytic activity under mild conditions the one key drawback associated with these systems is the utilization of halide anions fromthe viewpoint of green chemistry Hence we developed an environmentally benign recyclable and efficient covalently silica and chitosan supported basic amino acids as
استاد راهنما :
عبدالرضا حاجي پور
استاد مشاور :
غلامرضا كوزه گري
استاد داور :
ايرج محمدپور بلترك، عليرضا نجفي چرمهيني، حسين توكل
