محمد ابراهیم زینالی
تهران، پژوهشگاه پلیمر و پتروشیمی ایران، پژوهشکده پتروشیمی، صندوق پستی 112-14975
[ 1 ] - عوامل مؤثر بر بلورینگی پلی(وینیل الکل) تهیه شده در شرایط واکنش مختلف
در این پژوهش، نمونه هایی از پلی(وینیل الکل) در شرایط واکنش مختلف تهیه شده است. دما و زمان، با وجود مقدار کاتالیزور ثابت در آزمون‌ها، به‌عنوان مهم‌ترین عوامل روی خواص پلی(وینیل الکل)های تولید شده درنظر گرفته شده و درجه آبکافت و وزن مولکولی به‌عنوان متغیرهای وابسته اندازه گیری شدند. برای این کار، ابتدا دما روی 45 درجه سلسیوس ثابت نگه داشته شد و آزمون آبکافت در زمان‌های متفاوت انجام شد. برای ا...
[ 2 ] - Prediction of polyvinyl alcohol (PVOH) properties synthesized at various conditions by artificial neural networks technique
In this research samples of PVOH were synthesized at various reaction conditions (temperature, time, and amount of catalyst). First at 25˚C and 45˚C and constant catalyst weight samples of PVOH were prepared with different degree of hydrolysis at various times. For investigation of the effects of temperature, at times 20 and 40 min and constant weight of catalyst PVOH was prepared at various te...
[ 3 ] - Effect of operating conditions on divinylbenzene production in diethyl benzene dehydrogenation reactor
DEB dehydrogenation reaction was conducted to produce divinylbenzene (DVB) and ethylvinylbenzene (EVB). The effects of temperature, catalyst weight and time factor on the performance of the dehydrogenation reactor were investigated experimentally. Temperature was varied from 550º C up to 600 º C. Temperature affect the conversion of DEB to DVB significantly. The mole fraction of DEB in the outl...
[ 4 ] - Reactor modeling and kinetic parameters estimation for diethylbenzene (DEB) dehydrogenation reactions
Divinylbenzene (DVB) is produced by catalytic dehydrogenation of DEB at high temperature and atmospheric pressure. Ethylvinylbenzene (EVB) is produced as a useful chemical during dehydrogenation of DEB. Also some other liquid and gaseous by products is produced during dehydrogenation. A set-up has been developed to conduct the DEB dehydrogenation reactions experiments to prepare DVB at differen...
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