کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
64101 48270 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dimethyletherproduction on zeolite catalysts activated by Cl−, F− and/or ultrasonication
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
پیش نمایش صفحه اول مقاله
Dimethyletherproduction on zeolite catalysts activated by Cl−, F− and/or ultrasonication
چکیده انگلیسی

The chlorinated and fluorinated zeolite catalysts were prepared by the impregnation of zeolites (H-ZSM-5, H-MOR or H-Y) using two halogen precursors (ammonium chloride and ammonium fluoride) in this study. The influence of ultrasonic irradiation was evaluated for optimizing both halogen precursors for production of dimethylether (DME) via methanol dehydration in a fixed bed reactor. The catalysts were characterized by SEM, XRD, BET and NH3-TPD. The reaction conditions were temperatures from 100 to 300°C and a WHSV =15.9 h−1. All halogenated catalysts show higher catalytic activities at all reaction temperatures studied. However, the halogenated zeolite catalysts prepared under ultrasonic irradiation show higher performance for DME formation. The chlorinated zeolite catalysts show higher activity and selectivity for DME production than the respective fluorinated versions.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Fuel Chemistry and Technology - Volume 44, Issue 4, April 2016, Pages 428–436
نویسندگان
, , ,