کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5370422 | 1388494 | 2006 | 9 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
In situ monitoring of bare and K-doped Mo2C catalysts surface depassivation based on emission of electrons and K+ ions
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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: In situ monitoring of bare and K-doped Mo2C catalysts surface depassivation based on emission of electrons and K+ ions In situ monitoring of bare and K-doped Mo2C catalysts surface depassivation based on emission of electrons and K+ ions](/preview/png/5370422.png)
چکیده انگلیسی
The method for in situ characterization of surface transformations on heterogeneous catalyst is described. The method is based on the measurements of thermal electron and ion emissions from the catalyst surface. It is demonstrated by investigating the depassivation process of undoped and K-doped Mo2C catalysts exposed to air after synthesis and use to identify characteristic steps of reduction-carburization by flowing CH4/H2 gas mixture. The information obtained from thermal emission experiments is consistent with the methane consumption profile, which provided an independent observation of the recarburization step.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Applied Surface Science - Volume 252, Issue 12, 15 April 2006, Pages 4129-4137
Journal: Applied Surface Science - Volume 252, Issue 12, 15 April 2006, Pages 4129-4137
نویسندگان
Andrzej Kotarba, Grzegorz Adamski, Zbigniew Sojka, Gerald Djega-Mariadassou, Jan B.C. Pettersson,