ISSN:
1572-879X
Keywords:
Methoxy decomposition
;
iron catalysts
;
iron oxide catalysis
;
High Resolution Electron Energy Loss Spectroscopy (HREELS)
;
Temperature Programmed Reaction Spectroscopy (TPRS)
Source:
Springer Online Journal Archives 1860-2000
Topics:
Chemistry and Pharmacology
Notes:
Abstract Pure methoxy overlayers on the Fe(l00) surface were prepared and characterized by high resolution electron energy loss spectroscopy (HREELS). Reactions of the methoxy overlayer on the clean surface and in the presence of coadsorbed oxygen have been studied using temperature programmed reaction spectroscopy (TPRS). Post-dosed oxygen alters dramatically the selectivity of methoxy decomposition. Carbon monoxide and hydrogen are the major decomposition products from a pure methoxy overlayer, while formaldehyde is the major decomposition product from an oxygen coadsorbed methoxy overlayer. Clear evidence for production of formaldehyde via a disproportionation of methoxy is presented. Coadsorbed oxygen raises the decomposition temperature of methoxy by 200 K.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00774727
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