کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
9594618 1507971 2005 10 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Coadsorption of oxygen, gold and carbon monoxide on Ru(0 0 0 1) and CO2 formation: A thermal desorption study
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Coadsorption of oxygen, gold and carbon monoxide on Ru(0 0 0 1) and CO2 formation: A thermal desorption study
چکیده انگلیسی
The coadsorption of O, Au and CO and COa + Oa reaction is studied on Ru(0 0 0 1) using temperature programmed desorption, Auger electron spectroscopy, and low energy electron diffraction. CO/CO2 desorption is measured on surfaces with different oxygen coverages and varying concentrations of Au using isotopically labeled 13C18O. There is no CO2 formation from CO adsorbed on clean Ru(0 0 0 1) and O(2 × 1), but CO2 forms on CO covered RuOx surfaces. We have observed CO2 formation below room temperature on O(2 × 1) and RuOx surfaces covered by Au nanoparticles. The conversion from CO to CO2 is found to be the highest over submonolayer Au films supported on RuOx suggesting a synergistic effect between catalytic Au nanoparticles and RuO2 domains.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 588, Issues 1–3, 20 August 2005, Pages 117-126
نویسندگان
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