Acetaldehyde Partial Oxidation on the Au(111) Model Catalyst Surface: C–C Bond Activation and Formation of Methyl Acetate as an Oxidative Coupling Product Full article
Conference |
European Conference on Surface Science (ECOSS 30) 31 Aug - 5 Sep 2014 , Antalya |
||||
---|---|---|---|---|---|
Journal |
Surface Science
ISSN: 0039-6028 |
||||
Output data | Year: 2015, Volume: 641, Pages: 289-293 Pages count : 5 DOI: 10.1016/j.susc.2015.04.005 | ||||
Tags | Acetaldehyde, Au(111), Methyl acetate, Oxidative coupling, Partial oxidation | ||||
Authors |
|
||||
Affiliations |
|
Funding (3)
1 | Türkiye Bilimsel ve Teknolojik Araştırma Kurumu | 112T589 |
2 | Bilkent University | |
3 | Türkiye Bilimsel ve Teknolojik Araştırma Kurumu | 2221 |
Abstract:
Partial oxidation of acetaldehyde (CH3CHO) on the oxygen pre-covered Au(111) single crystal model catalyst was investigated via Temperature Programmed Desorption (TPD) and Temperature Programmed Reaction Spectroscopy (TPRS) techniques, where ozone (O3) was utilized as the oxygen delivery agent providing atomic oxygen to the reacting surface. We show that for low exposures of O3 and small surface oxygen coverages, two partial oxidation products namely, methyl acetate (CH3COOCH3) and acetic acid (CH3COOH) can be generated without the formation of significant quantities of carbon dioxide. The formation of methyl acetate as the oxidative coupling reaction product implies that oxygen pre-covered Au(111) single crystal model catalyst surface can activate C–C bonds. In addition to the generation of these products; indications of the polymerization of acetaldehyde on the gold surface were also observed as an additional reaction route competing with the partial and total oxidation pathways. The interplay between the partial oxidation, total oxidation and polymerization pathways reveals the complex catalytic chemistry associated with the interaction between the acetaldehyde and atomic oxygen on catalytic gold surfaces.
Cite:
Karatok M.
, Vovk E.I.
, Shah A.A.
, Turksoy A.
, Ozensoy E.
Acetaldehyde Partial Oxidation on the Au(111) Model Catalyst Surface: C–C Bond Activation and Formation of Methyl Acetate as an Oxidative Coupling Product
Surface Science. 2015. V.641. P.289-293. DOI: 10.1016/j.susc.2015.04.005 WOS Scopus РИНЦ
Acetaldehyde Partial Oxidation on the Au(111) Model Catalyst Surface: C–C Bond Activation and Formation of Methyl Acetate as an Oxidative Coupling Product
Surface Science. 2015. V.641. P.289-293. DOI: 10.1016/j.susc.2015.04.005 WOS Scopus РИНЦ
Files:
Full text from publisher
Dates:
Published online: | Apr 11, 2015 |
Published print: | Nov 1, 2015 |
Identifiers:
Web of science | WOS:000361408800046 |
Scopus | 2-s2.0-84940462020 |
Elibrary | 24944673 |
Chemical Abstracts | 2015:692049 |
Chemical Abstracts (print) | 163:331017 |
OpenAlex | W2035229272 |