کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5426707 1395898 2006 16 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Partial oxidation of higher olefins on Ag(1 1 1): Conversion of styrene to styrene oxide, benzene, and benzoic acid
موضوعات مرتبط
مهندسی و علوم پایه شیمی شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
Partial oxidation of higher olefins on Ag(1 1 1): Conversion of styrene to styrene oxide, benzene, and benzoic acid
چکیده انگلیسی

Temperature programmed reaction spectroscopy (TPRS), X-ray photoelectron spectroscopy (XPS), and reflection absorption infrared spectroscopy (RAIRS) were used to study the partial oxidation of styrene on Ag(1 1 1). Styrene oxide, benzene, and benzoic acid were identified as partially oxidized reaction products. XPS and RAIRS provide evidence for the formation of a styrene-derived surface oxametallacycle that either forms styrene oxide or is further oxidized in a branching reaction to form benzoate, which is the intermediate responsible for the formation of both benzene and benzoic acid. The strong dependence of the product distribution on oxygen coverage suggests that O monomers adsorbed on Ag(1 1 1) provide a higher selectivity for partial oxidation than oxygen from the Ag(1 1 1)-p(4 × 4)-O reconstruction.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Surface Science - Volume 600, Issue 23, 1 December 2006, Pages 5025-5040
نویسندگان
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