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DC Field | Value | Language |
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dc.citation.endPage | 223 | - |
dc.citation.startPage | 213 | - |
dc.citation.title | JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL | - |
dc.citation.volume | 406 | - |
dc.contributor.author | Szanyi, Janos | - |
dc.contributor.author | Kwak, Jahun | - |
dc.date.accessioned | 2023-12-22T00:46:24Z | - |
dc.date.available | 2023-12-22T00:46:24Z | - |
dc.date.created | 2015-08-03 | - |
dc.date.issued | 2015-09 | - |
dc.description.abstract | In situ transmission infrared spectroscopy was used to investigate the photo-oxidation of acetone on a commercial, oxidized TiO2 (P25) powder catalyst under UV irradiation at ambient temperature, in the absence and presence of gas phase O-2. The photochemistry of a number of organic molecules (2-butanone, methanol and acetic acid,) under the same conditions was also studied in order to identify reaction intermediates and products formed in the photo-oxidation of acetone. Under anaerobic conditions (in the absence of gas phase oxygen) limited extent of photo-oxidation of acetone took place on the oxidized TiO2 sample. In the presence of O-2 in the gas phase, however, acetone was completely converted to acetates and formates, and ultimately CO2. The initial step in the sequence of photo-induced reactions is the ejection of a methyl radical, resulting in the formation of surface acetates (from the acetyl group) and formates (from the methyl radicals). Acetate ions are also converted to formates, that, in turn, photo-oxidized to CO2. Under the experimental conditions applied the accumulation of carbonates and bicarbonates were observed on the TiO2 surface as the photo-oxidation of acetone proceeded (this was also observed during the course of photo-oxidation of all the other organics studied here). When the initial radical ejection step produced hydrocarbons containing more than one C atoms (as in the case in 2-butanone and mesytil oxide), the formation of aldehydes on the catalyst surface was also observed as a result of secondary reactions. (C) 2015 Elsevier B.V. All rights reserved. | - |
dc.identifier.bibliographicCitation | JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL, v.406, pp.213 - 223 | - |
dc.identifier.doi | 10.1016/j.molcata.2015.05.025 | - |
dc.identifier.issn | 1381-1169 | - |
dc.identifier.scopusid | 2-s2.0-84934779746 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/13383 | - |
dc.identifier.url | http://www.sciencedirect.com/science/article/pii/S1381116915002095 | - |
dc.identifier.wosid | 000357839500028 | - |
dc.language | 영어 | - |
dc.publisher | ELSEVIER SCIENCE BV | - |
dc.title | Photo-catalytic oxidation of acetone on a TiO2 powder: An in situ FTIR investigation | - |
dc.type | Article | - |
dc.description.isOpenAccess | FALSE | - |
dc.relation.journalWebOfScienceCategory | Chemistry, Physical | - |
dc.relation.journalResearchArea | Chemistry | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | TiO2 | - |
dc.subject.keywordAuthor | Photo-oxidation opf acetone | - |
dc.subject.keywordAuthor | Intermediates | - |
dc.subject.keywordAuthor | Reaction mechanism | - |
dc.subject.keywordAuthor | FTIR spectroscopy | - |
dc.subject.keywordPlus | PHOTOCATALYTIC OXIDATION | - |
dc.subject.keywordPlus | ACETIC-ACID | - |
dc.subject.keywordPlus | PHOTOOXIDATION | - |
dc.subject.keywordPlus | WATER | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | TIO2(110) | - |
dc.subject.keywordPlus | PHOTODECOMPOSITION | - |
dc.subject.keywordPlus | PHOTOCHEMISTRY | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
dc.subject.keywordPlus | METHANOL | - |
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