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DC Field | Value | Language |
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dc.citation.endPage | 64 | - |
dc.citation.number | 1 | - |
dc.citation.startPage | 51 | - |
dc.citation.title | JOURNAL OF CATALYSIS | - |
dc.citation.volume | 239 | - |
dc.contributor.author | Szailer, Tamás | - |
dc.contributor.author | Kwak, Jahun | - |
dc.contributor.author | Kim, Do Heui | - |
dc.contributor.author | Hanson, Jonathan C. | - |
dc.contributor.author | Peden, Charles H.F. | - |
dc.contributor.author | Szanyi, János | - |
dc.date.accessioned | 2023-12-22T10:07:08Z | - |
dc.date.available | 2023-12-22T10:07:08Z | - |
dc.date.created | 2015-07-15 | - |
dc.date.issued | 2006-04 | - |
dc.description.abstract | in situ Fourier transform infrared spectroscopy, coupled with mass spectrometry a the efficiency of nitrate reduction with CO and H-2 on Pt/Al-2-O-3 and Pt/BaO/Al2O3 NOx storage reduction (NSR) catalysts. Surface nitrates NO2 adsorption. and their reduction efficiencies were examined oil the catalysts together with the analysis of the gas-phase were generated by NO2 composition in the presence of the two different reductants. H-2 was found to be a more effective reducing agent than CO. In particular, the reduction of surface nitrates proceeds very efficiently with H-2 even at low temperatures (similar to 420 K). During reduction with CO2 isocyanates form and adsorb on the oxide components of the catalyst; however, these surface isocyanates readily react with water to form CO2 and ammonia. The NH3 at higher temperatures (> 473 K) to produce N-2. In the absence of H2O the NCO species are stable to high temperatures and are removed from the catalyst only when they react with NOx thermal decomposition products to form N-2 and CO2 The results of this study point to a complex reaction mechanism involving tile removal of Surface oxygen atoms from Pt particles by either H-2 or CO2 the direct reduction of stored NOx with H-2 (low-temperature NOx reduction), the formation and subsequent hydrolysis of NCO species, and the direct reaction of NCO with decomposing NOx (high-temperature NOx reduction). (c) 2006 Elsevier Inc. All rights reserved | - |
dc.identifier.bibliographicCitation | JOURNAL OF CATALYSIS, v.239, no.1, pp.51 - 64 | - |
dc.identifier.doi | 10.1016/j.jcat.2006.01.014 | - |
dc.identifier.issn | 0021-9517 | - |
dc.identifier.scopusid | 2-s2.0-33644850208 | - |
dc.identifier.uri | https://scholarworks.unist.ac.kr/handle/201301/12143 | - |
dc.identifier.url | http://www.sciencedirect.com/science/article/pii/S0021951706000108 | - |
dc.identifier.wosid | 000236419800006 | - |
dc.language | 영어 | - |
dc.publisher | ACADEMIC PRESS INC ELSEVIER SCIENCE | - |
dc.title.alternative | Reduction of stored NOx on Pt/Al2O3 and Pt/BaO/Al2O3 catalysts with H-2 and CO | - |
dc.title | Reduction of stored NOx on Pt/Al2O3 and Pt/BaO/Al2O3 catalysts with H-2 and CO | - |
dc.type | Article | - |
dc.description.journalRegisteredClass | scopus | - |
dc.subject.keywordAuthor | NOx reduction | - |
dc.subject.keywordAuthor | reduction efficiency Pt/Al2O3 | - |
dc.subject.keywordAuthor | Pt/BaO/Al2O3 | - |
dc.subject.keywordAuthor | FTIR | - |
dc.subject.keywordAuthor | TR-XRD | - |
dc.subject.keywordPlus | OXYGEN-RICH CONDITIONS | - |
dc.subject.keywordPlus | FT-IR | - |
dc.subject.keywordPlus | STORAGE | - |
dc.subject.keywordPlus | SPECTROSCOPY | - |
dc.subject.keywordPlus | ADSORPTION | - |
dc.subject.keywordPlus | ISOCYANATE | - |
dc.subject.keywordPlus | MECHANISM | - |
dc.subject.keywordPlus | BAO/AL2O3 | - |
dc.subject.keywordPlus | PLATINUM | - |
dc.subject.keywordPlus | OXIDES | - |
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