پديد آورنده :
رستگاري، هاجر
عنوان :
سنتز دي انيل اتر از اتانول زير و فوق بحراني در حضور كاتاليزورهاي همگن به روش پيوسته
مقطع تحصيلي :
كارشناسي ارشد
گرايش تحصيلي :
شيمي تجزيه
محل تحصيل :
اصفهان: دانشگاه صنعتي اصفهان، دانشكده شيمي
صفحه شمار :
چهارده،76ص.: مصور،جدول،نمودار
يادداشت :
ص.ع.به فارسي و انگليسي
استاد راهنما :
حسن قاضي عسگر
استاد مشاور :
محمد يلپاني
توصيفگر ها :
دي اتيل اتر , پاراتولوئن سولفونيك اسيد , سولفوريك اسيد
تاريخ نمايه سازي :
21/12/89
استاد داور :
مهران غياثي، محمد قريشي
چكيده فارسي :
به فارسي و انگليسي: قابل رويت در نسخه ديجيتالي
چكيده انگليسي :
Continuous Synthesis of Diethyl Ether from Sub and Supercritical Ethanol in the Presence of Homogeneous Catalysts Hajar Rastegari h rastegarinajafabadi@ch iut ac ir September 28 2010 Department of Chemistry Isfahan University of Technology Isfahan 84156 83111 Iran Degree M Sc Language Farsi Supervisor Prof Hassan S Ghaziaskar ghazi@cc iut ac ir Advisor Prof Mohammad Yalpani Abstract Supercritical fluids are good alternative for environmentally unsafe organic solvents because of their tunable physicochemical properties with temperature and pressure Also they possess a wide range of gas like to liquid like properties and can be employed as unique media to overcome poor solubility strength of gases and hindered mass transportation in conventional liquids Among supercritical fluids ethanol offer novel media for both chemical reactions and separations because it has an accessible critical properties Tc 240 85 1C Pc 61 bar and it is less corrosive and more reactive Several industrially important reactions such as catalytic etherification have been successfully done in hot alcohols Diethyl ether because of its high volatility low autoignition temperature and good combustion characteristics is a valuable chemical and an attractive fuel additive Diethyl ether has been synthesized in sub and supercritical ethanol for the first time in Iran in this project A continuous flow reactor and homogeneous catalysts namely para toluene sulfonic acid and sulfuric acid was used and the effect of temperature flow rate pressure and catalyst concentration was investigated In the best condition temperature 200 oC flow rate 0 1 mL min 1 and 4 w v concentration of para toluene sulfonic acid at pressure of 80 bar the percent yield and selectivity was 60 and 94 respectively In the same condition but with 2 w v concentration of sulfuric acid 75 and 99 percent yield and selectivity was achieved respectively Keywords Sub and Supercritical Ethanol Diethyl Ether Para Toluene Sulfonic Acid Sulfuric Acid
استاد راهنما :
حسن قاضي عسگر
استاد مشاور :
محمد يلپاني
استاد داور :
مهران غياثي، محمد قريشي
