کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5426707 | 1395898 | 2006 | 16 صفحه PDF | دانلود رایگان |
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(1Â 1Â 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(1Â 1Â 1) provide a higher selectivity for partial oxidation than oxygen from the Ag(1Â 1Â 1)-p(4Â ÃÂ 4)-O reconstruction.
Journal: Surface Science - Volume 600, Issue 23, 1 December 2006, Pages 5025-5040