کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5369764 | 1388451 | 2007 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Variation of the vanadium oxidation state within a VPO catalyst layer in a membrane reactor: XPS mapping and modelling
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Variation of the vanadium oxidation state within a VPO catalyst layer in a membrane reactor: XPS mapping and modelling Variation of the vanadium oxidation state within a VPO catalyst layer in a membrane reactor: XPS mapping and modelling](/preview/png/5369764.png)
چکیده انگلیسی
Recently, the feasibility of butane oxidation in an electrochemical membrane reactor (EMR) using a vanadium phosphorus oxide (VPO) catalyst layer on a tubular anodic electrode has been reported. This novel application of EMR gives rise to questions about the vanadium oxidation state (Vox) under working conditions and about its spatial distribution in the catalyst layer. It has now been determined by means of position-resolved XPS measurements. In addition, model calculations on the spatial Vox distribution have been performed for the first time. The simulations reveal a non-uniform 3D distribution of Vox due to the relative rate of reduction and re-oxidation processes in the catalyst layer, in good agreement with the experimental XPS data.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 253, Issue 13, 30 April 2007, Pages 5904-5909
Journal: Applied Surface Science - Volume 253, Issue 13, 30 April 2007, Pages 5904-5909
نویسندگان
Y. Suchorski, B. Munder, S. Becker, L. Rihko-Struckmann, K. Sundmacher, H. Weiss,