کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9610408 | 47183 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Selectivity of partial hydrogenation reactions performed in a pore-through-flow catalytic membrane reactor
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کلمات کلیدی
1-OctynePhaCCOAFBRPAACyclooctene1,5-Cyclooctadiene - 1،5-CyclooctadieneSelectivity - انتخابیConversion - تبدیلreaction rate constant - ثابت سرعت واکنشGeraniol - جریمهولMin - حداقلweight percent - درصد وزنminute - دقیقهTemperature - دماFixed bed reactor - راکتور ثابت تختMembrane reactor - راکتور غشاییSlurry reactor - راکتور مایعCatalytic membrane reactor - راکتور کاتالیستی غشاءHour - ساعتCyclooctane - سیکلووکتانInitial concentration - غلظت اولیهPressure - فشار Phenylacetylene - فینیل آستیلنNanoparticles - نانوذراتflow rate - نرخ جریانCoe - همwt.% - وزن٪Polyacrylic Acid - پلیآکریلیک اسیدCod - کادو
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The selectivity of partial hydrogenation reactions of unsaturated substrates was studied in a membrane reactor operating at 323Â K and 40Â bar hydrogen pressure. The reactor system was constructed as a loop of a saturation vessel and a membrane module in which the reaction mixture was resaturated with hydrogen up to 100 times. In a porous membrane made from cross-linked polyacrylic acid palladium nanoparticles were incorporated as catalysts. A well-defined residence time within the membrane was achieved due to a defined pore structure of the membrane and a convective mass flow of the reaction mixture through the membrane. The selectivity for the partially hydrogenated products was investigated as a function of the pore size of the PAA membrane and was compared to commercially available catalysts. Compared to experiments with supported catalysts (Pd/C and Pd/Al2O3) in a slurry and a fixed bed reactor the selectivity for the desired products could be increased by 3% (1-octyne) up to 40% (geraniol).
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 104, Issues 2â4, 30 June 2005, Pages 305-312
Journal: Catalysis Today - Volume 104, Issues 2â4, 30 June 2005, Pages 305-312
نویسندگان
Andrea Schmidt, Rami Haidar, Reinhard Schomäcker,