Decomposition and Oxidation of Methanol on Platinum: A Study by in situ X-Ray Photoelectron Spectroscopy and Mass Spectrometry Full article
| Conference |
Bridging the Gap between Model and Real Catalysis. Energy-Related Catalysis : Third Russian-German Seminar on Catalysis 24-27 Jun 2013 , Burduguz village, Lake Baikal |
||||
|---|---|---|---|---|---|
| Journal |
Kinetics and Catalysis
ISSN: 0023-1584 , E-ISSN: 1608-3210 |
||||
| Output data | Year: 2014, Volume: 55, Number: 4, Pages: 509-519 Pages count : 11 DOI: 10.1134/S0023158414040065 | ||||
| Tags | Bond Cleavage; Methanol Oxidation; Methanol Conversion; Single Crystal Surface; Methanol Decomposition | ||||
| Authors |
|
||||
| Affiliations |
|
Funding (1)
| 1 | Президиум РАН | 24 |
Abstract:
The reactions of the catalytic oxidation and decomposition of methanol on the atomically smooth and high-defect Pt(111) single-crystal surfaces were studied using in situ temperature-programmed reaction and X-ray photoelectron spectroscopy. It was found that the decomposition of methanol on both of the surfaces occurred via two reaction pathways: complete dehydrogenation to CO and decomposition with the C-O bond cleavage. Although the rate of reaction via the latter pathway was lower than the rate of dehydrogenation by three orders of magnitude, the carbon formed as a result of the C-O bond cleavage can be accumulated on the surface of platinum to prevent the further course of the reaction. It was shown that oxygen exhibits high activity toward the formed carbon deposits. As a result, the rate of methanol conversion in the presence of oxygen in a gas phase increased by one or two orders of magnitude; in this case, CO2 and water appeared in the composition of the reaction products as a result of the oxidation of CO and hydrogen, respectively. The high-defect surface of platinum was more active in the reactions of methanol decomposition and oxidation than the atomically smooth Pt(111) single-crystal surface. On the former, selectivity for the formation of methanol dehydrogenation products in oxygen deficiency was higher than on the latter. The main reaction pathways of the decomposition and oxidation of methanol on platinum were considered.
Cite:
Kaichev V.V.
, Prosvirin I.P.
, Bukhtiyarov V.I.
Decomposition and Oxidation of Methanol on Platinum: A Study by in situ X-Ray Photoelectron Spectroscopy and Mass Spectrometry
Kinetics and Catalysis. 2014. V.55. N4. P.509-519. DOI: 10.1134/S0023158414040065 WOS Scopus РИНЦ ANCAN OpenAlex
Decomposition and Oxidation of Methanol on Platinum: A Study by in situ X-Ray Photoelectron Spectroscopy and Mass Spectrometry
Kinetics and Catalysis. 2014. V.55. N4. P.509-519. DOI: 10.1134/S0023158414040065 WOS Scopus РИНЦ ANCAN OpenAlex
Original:
Каичев В.В.
, Просвирин И.П.
, Бухтияров В.И.
Разложение и окисление метанола на платине: исследование методами РФЭС и масс-спектрометрии in situ
Кинетика и катализ. 2014. Т.55. №4. С.535-546. DOI: 10.7868/S0453881114040066 РИНЦ OpenAlex
Разложение и окисление метанола на платине: исследование методами РФЭС и масс-спектрометрии in situ
Кинетика и катализ. 2014. Т.55. №4. С.535-546. DOI: 10.7868/S0453881114040066 РИНЦ OpenAlex
Dates:
| Submitted: | Nov 8, 2013 |
| Published print: | Jul 1, 2014 |
| Published online: | Aug 5, 2014 |
Identifiers:
| Web of science: | WOS:000340360600016 |
| Scopus: | 2-s2.0-84940242329 |
| Elibrary: | 24954633 |
| Chemical Abstracts: | 2014:1271169 |
| Chemical Abstracts (print): | 162:526780 |
| OpenAlex: | W1975110462 |