Cardiff University | Prifysgol Caerdydd ORCA
Online Research @ Cardiff 
WelshClear Cookie - decide language by browser settings

Molecularly resolved studies of the reaction of pyridine and dimethylamine with oxygen at a Cu(110) surface

Carley, Albert Frederick, Davies, Philip Rosser ORCID: https://orcid.org/0000-0003-4394-766X, Edwards, Dyfan, Jones, Rhys Vaughan and Parsons, Martin 2005. Molecularly resolved studies of the reaction of pyridine and dimethylamine with oxygen at a Cu(110) surface. Topics in Catalysis 36 (1-4) , pp. 21-32. 10.1007/s11244-005-7859-1

Full text not available from this repository.

Abstract

Pyridine and dimethylamine have been studied at clean and oxidised Cu(110) surfaces as model systems for the interaction of amines with heterogeneous catalysts using scanning tunnelling microscopy and X-ray photoelectron spectroscopy. Both molecules interact strongly with sub monolayer concentrations of chemisorbed oxygen causing a change from the well known p(2×1)O(a) islands to a (3×1) structure. XPS shows a 1:1 correspondence between the concentration of surface oxygen and that of chemisorbed pyridine but the stoichiometry of the dimethylamine/oxygen system could not be directly measured because of a slow reaction which results in the desorption of oxygen as water and the formation of a chemisorbed amide. The amide also decomposes at room temperature and desorbs leaving a clean surface. However, the 2:1 stoichiometry of the dimethylamine/oxygen reaction suggests a 1:1 dimethylamine:oxygen ratio in the (3×1) structure. The results of the study are interpreted in terms of an amine–oxygen complex, which may provide a general model for the interaction of amines with oxygen at metal surfaces.

Item Type: Article
Date Type: Publication
Status: Published
Schools: Chemistry
Cardiff Catalysis Institute (CCI)
Subjects: Q Science > QD Chemistry
Uncontrolled Keywords: dimethylamine - pyridine - XPS - STM - amide - surface - Cu(110), amine oxide
Publisher: Springer
ISSN: 1022-5528
Last Modified: 17 Oct 2022 08:54
URI: https://orca.cardiff.ac.uk/id/eprint/1415

Citation Data

Cited 9 times in Scopus. View in Scopus. Powered By Scopus® Data

Actions (repository staff only)

Edit Item Edit Item