Effect of Mordenite Catalyst types on Dehydration of Methanol to Dimethyl Ether
محل انتشار: ششمین کنگره بین المللی مهندسی شیمی
سال انتشار: 1388
نوع سند: مقاله کنفرانسی
زبان: انگلیسی
مشاهده: 1,413
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شناسه ملی سند علمی:
ICHEC06_305
تاریخ نمایه سازی: 1 مهر 1388
چکیده مقاله:
The conversion of methanol to dimethyl ether was carried out over various commercial mordenite and ionexchanged catalysts to evaluate the catalytic performance of mordenite catalysts with different pore structures and acidities. These catalysts were compared for their catalytic properties in a fixed-bed reactor at 1atm, 573K and LHSV of 2.84h-1. The catalysts were characterized by BET, ICP, NH3-TPD, XRD, TGA and FT-IR techniques. The ion-exchanged mordenite showed higher activity, selectivity and good stability in dehydration of methanol due to the addition of medium acid-sites. Also, the effect of water on the catalyst deactivation was investigated over two selected catalysts in order to develop a suitable catalyst for synthesis of dimethyl ether. It was found that H-MOR40 (MCDH-1) catalyst was more active and less deactivated than other one in a feed containing 20wt% water.
کلیدواژه ها:
نویسندگان
G . R Moradi
Catalyst Research Group, Petrochemical Research and Technology Company, National Petrochemical Company, ۱۴۳۵۸, Tehran, Iran
F Yaripour
Catalyst Research Group, Petrochemical Research and Technology Company, National Petrochemical Company, ۱۴۳۵۸, Tehran, Iran
P Vale-Sheyda
Catalyst Research Center, Department of chemical engineering, Faculty of engineering, Razi University, Kermanshah, Ir an