کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5424198 | 1507958 | 2009 | 5 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Adsorption behaviors of CO on W(1 1 0) and Mo(1 1 0) surfaces in the β-state are still not clear
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
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چکیده انگلیسی
Adsorption structure of CO on W and Mo at above â¼800 K (β-CO) has been extensively studied in the history of surface science. Most of the previous studies concluded that CO is dissociated in the β-CO, and a tilted structure plays a role as a precursor state of the dissociation. We have recently studied valence band spectra of the β-CO on W(1 1 0), oxygen-precovered W(1 1 0) and Mo(1 1 0) using synchrotron radiation. CO-derived states with binding energies close to those of the 4Ï-CO can be observed, implying a non-dissociative chemisorption in this high-temperature state. We suggest that still some additional works need to be done in order to understand adsorption structure of β-CO completely.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 603, Issues 10â12, 1 June 2009, Pages 1434-1438
Journal: Surface Science - Volume 603, Issues 10â12, 1 June 2009, Pages 1434-1438
نویسندگان
Young Dok Kim, Jin-Hyo Boo, Soon-Bo Lee,