کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10244396 | 47681 | 2005 | 13 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Ethylene epoxidation over silver and copper-silver bimetallic catalysts: I. Kinetics and selectivity
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Ethylene epoxidation over silver and copper-silver bimetallic catalysts: I. Kinetics and selectivity Ethylene epoxidation over silver and copper-silver bimetallic catalysts: I. Kinetics and selectivity](/preview/png/10244396.png)
چکیده انگلیسی
Copper-silver bimetallic catalysts offer improved selectivities compared with silver alone in the direct epoxidation of ethylene. This bimetallic combination was previously identified by density functional theory calculations, and its performance advantage was verified in preliminary catalytic reactor experiments. We report here a more detailed investigation of the performance of monolith-supported silver and Cu-Ag bimetallic catalysts at different feed compositions and reaction temperatures. From these studies, information about activation energies and reaction orders for ethylene epoxidation was obtained. The superior performance of the Cu-Ag bimetallic catalysts prepared by sequential impregnation was demonstrated over a wide range of feed compositions.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Catalysis - Volume 236, Issue 2, 10 December 2005, Pages 366-378
Journal: Journal of Catalysis - Volume 236, Issue 2, 10 December 2005, Pages 366-378
نویسندگان
Jerome T. Jankowiak, Mark A. Barteau,