کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
56673 | 47091 | 2010 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adsorption/desorption studies of CO on a rhodium(1 0 0) surface under UHV conditions: A comparative study using XPS, RAIRS, and SSIMS
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
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چکیده انگلیسی
In order to explore to what extent equilibrium adsorption can be studied with surface science methods such as reflection absorption infrared spectroscopy (RAIRS), static secondary ion mass spectroscopy (SSIMS) and X-ray photoelectron spectroscopy (XPS), adsorption of CO on a Rh(1 0 0) single crystal surface has been studied. A structural model of CO on Rh(1 0 0) at different coverages is presented. Under equilibrium adsorption conditions, we were able to determine the CO coverage and adsorption isotherms. From the isotherms, an isosteric heat of adsorption of about 160 kJ/mol was obtained, compared to an activation energy of desorption of 132 kJ/mol from temperature programmed desorption (TPD) experiments.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Today - Volume 154, Issues 1–2, 1 September 2010, Pages 53–60
Journal: Catalysis Today - Volume 154, Issues 1–2, 1 September 2010, Pages 53–60
نویسندگان
Maarten M.M. Jansen, Freek J.E. Scheijen, Jonathan Ashley, Ben E. Nieuwenhuys, J.W. Niemantsverdriet (Hans),