کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5424489 | 1395826 | 2008 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Temperature effects on alkali-promoted CO dissociation on Ni(1 1 1)
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Temperature effects on the alkali-induced CO dissociation on Ni(1Â 1Â 1) were studied by high-resolution electron energy loss spectroscopy. Measurements showed that CO adsorption on an alkali-precovered Ni(1Â 1Â 1) surface is partially dissociative in a temperature range up to 400Â K and completely dissociative for higher sample temperatures. Depending on temperature an alkali critical precoverage for CO dissociation was found to exist, in agreement with theoretical calculations. Moreover, loss measurements demonstrated that Na and CO desorption are non-concurrent, in contrast with results obtained using thermal desorption spectroscopy for similar systems.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 602, Issue 12, 15 June 2008, Pages 2096-2100
Journal: Surface Science - Volume 602, Issue 12, 15 June 2008, Pages 2096-2100
نویسندگان
A. Politano, V. Formoso, G. Chiarello,