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Kwak, Ja Hun
Molecular Catalysis lab
Research Interests
  • Heterogeneous catalysis, molecular catalysis, ASlumima, zeolites


Interaction of NO2 with BaO: From cooperative adsorption to Ba(NO3)(2) formation

DC Field Value Language Yi, Cheol-Woo ko Kwak, Jahun ko Szanyi, Janos ko 2015-07-23T02:13:11Z - 2015-07-20 ko 2007-10 -
dc.identifier.citation JOURNAL OF PHYSICAL CHEMISTRY C, v.111, no.42, pp.15299 - 15305 ko
dc.identifier.issn 1932-7447 ko
dc.identifier.uri -
dc.identifier.uri ko
dc.description.abstract The adsorption and reaction of NO2 on a thick (> 30 ML), pure BaO film deposited onto an A]Al2O3/NiAl(110) substrate were investigated using temperature-programmed desorption, infrared reflection absorption spectroscopy, and X-ray photoelectron spectroscopy techniques. For the first time, it was clearly demonstrated that BaO reacts with NO2 to initially form nitrite-nitrate ion pairs by the cooperative adsorption mechanism predicted by theoretical calculation. These NO2-/NO3- ion pairs readily form even at 90 K. In the decomposition process of these ion pairs, first the nitrite species release an NO molecule and then form BaO2. At higher temperatures, nitrate species decompose in two steps: at lower temperature as NO2 only, then, at higher temperature, as NO + O-2. The results of NO2 adsorption/reaction on this model system are identical to those we have found on a high surface area 20 wt % BaO/gamma-Al2O3 sample with the exception of surface nitrates that were only observed on the high surface area material ko
dc.description.statementofresponsibility close -
dc.language ENG ko
dc.publisher AMER CHEMICAL SOC ko
dc.subject BARIUM OXIDE ko
dc.subject NSR CATALYSTS ko
dc.subject FT-IR ko
dc.subject STORAGE ko
dc.subject REDUCTION ko
dc.subject MODEL ko
dc.subject MGO ko
dc.subject BAO/AL2O3 ko
dc.subject CHEMISTRY ko
dc.subject NITRATE ko
dc.title Interaction of NO2 with BaO: From cooperative adsorption to Ba(NO3)(2) formation ko
dc.title.alternative Interaction of NO2 with BaO: From cooperative adsorption to Ba(NO3)(2) formation ko
dc.type ARTICLE ko
dc.identifier.scopusid 2-s2.0-35748953797 ko
dc.identifier.wosid 000250438900023 ko
dc.type.rims ART ko
dc.description.wostc 47 *
dc.description.scopustc 45 * 2015-12-28 * 2015-11-04 *
dc.identifier.doi 10.1021/jp074179c ko
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