کد مقاله کد نشریه سال انتشار مقاله انگلیسی ترجمه فارسی نسخه تمام متن
49392 46741 2016 4 صفحه PDF ندارد دانلود رایگان
عنوان انگلیسی مقاله
Optimum ratio of K2O to CeO2 in a wet-chemical method prepared catalysts for ethylbenzene dehydrogenation
ترجمه فارسی عنوان
نسبت بهینه از K2O به CeO2 در روش مواد شیمیایی کاتالیزور برای هیدروژن زدایی اتیل بنزن آماده
کلمات کلیدی
کاتالیست Fe2O3-K2O-CeO2؛ هیدروژن زدایی اتیل بنزن؛ نسبت بهینه؛ روش مرطوب و شیمیایی
Fe2O3–K2O–CeO2 catalyst; Ethylbenzene dehydrogenation; Optimum ratio; Wet-chemical method
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی کاتالیزور
چکیده انگلیسی


• A wet-chemical method produced catalysts exhibited relatively high activity for EBDH.
• Combined action of Fe3 + and Ce3 + plays a positive role in EBDH.
• The catalyst with the K2O/CeO2 ratio of 1.40 has the highest catalytic activity for EBDH.

Fe2O3–K2O–CeO2 catalysts with various ratios of K2O to CeO2 were prepared by the wet-chemical method. Their phase compositions, reducibility, valence states of elements and catalytic activities for ethylbenzene dehydrogenation were studied. The results demonstrated that when the weight ratio of K2O: CeO2 was 1.40, the catalyst had highest ethylbenzene conversion and styrene selectivity, which were attributed to the optimization of active phase content and electron transfer ability, etc. Further, higher CeO2 content not only enhanced styrene selectivity, but also prolonged the life cycle of catalysts.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 73, 5 January 2016, Pages 12–15
نویسندگان
, , , , , ,