کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8948236 1645651 2018 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Theoretical study of acetate decomposition on Au(111) surface: Oxygen-assisted γ-CH activation mechanism
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
پیش نمایش صفحه اول مقاله
Theoretical study of acetate decomposition on Au(111) surface: Oxygen-assisted γ-CH activation mechanism
چکیده انگلیسی
Inspired by the recent experimental results that the oxygen atoms adsorbed on Au(111) surface have a great influence on the mechanism and path of the decomposition of acetate(ACS Catal, 2014, 4(9): 3281−3288), the density functional theory was performed to simulate the decomposition of acetate on Au(111) surface with and without oxygen atom. The present calculation resents show that the pre-adsorbed oxygen atoms on Au(111) surface can activate the γ-CH bond of acetate and reduce the activation energy of the reaction, then finally get the product of carbon dioxide and formaldehyde. While without adsorbed oxygen atoms, acetate on Au(111) surface breaks down into carbon dioxide and methyl through C-C bond cleavage. In addition, the decomposition of acetate on Ag(111) surface with pre-adsorbed oxygen atoms has also been simulated and that of Au(111), and it was found that the oxygen atoms on Ag(111) assist γ-CH bond activation more efficiently due to its more negatively charged. The present study highlights the importance of oxygen-assisted γ-CH bond activation for oxygen-containing molecular on Au(111) and provide a new route for the synthesis of ester.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 43, Issue 36, 6 September 2018, Pages 17048-17056
نویسندگان
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