WFRF:(Monya Y.)
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- Ueda, K.Keio University (author)
Adsorption and Reaction of CO and NO on Ir(111) under Near Ambient Pressure Conditions
- Article/chapterEnglish2016
Publisher, publication year, extent ...
- 2015-12-29
- Springer Science and Business Media LLC,2016
- 10 s.
Numbers
- LIBRIS-ID:oai:lup.lub.lu.se:72718de4-30b5-497b-b9f9-bbbe062cb138
- https://lup.lub.lu.se/record/72718de4-30b5-497b-b9f9-bbbe062cb138URI
- https://doi.org/10.1007/s11244-015-0523-5DOI
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- Language:English
- Summary in:English
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- The adsorption and reaction of CO and NO on Ir(111) have been studied by near-ambient pressure X-ray photoelectron spectroscopy (NAP-XPS) together with low-energy electron diffraction, scanning tunneling microscopy, and mass spectroscopy (MS). Under both ultrahigh vacuum (UHV) and NAP conditions CO molecules occupy on-top sites of the Ir(111) surface at room temperature (RT) by forming two-dimensional clusters. Exposure to NO under UHV conditions at RT induces partially dissociative adsorption, while NAP NO exposure leads to a Ir(111) surface that is covered by molecular NO. We conducted in-operando NAP-XPS/MS observation of the NO + 13CO reaction under a NAP condition as a function of temperature. Below 210 °C adsorption of NO is inhibited by CO, while above 210 °C the CO inhibition is released due to partial desorption of CO and dissociative adsorption of NO starts to occur leading to associative formation of N2. Under the most active condition studied here the Ir surface is covered by a dense co-adsorption layer consisting of on-top CO, atomic N and O, which suggests that this reaction is not a NO-dissociation-limited process but a N2/CO2 formation-limited process.
Subject headings and genre
- NATURVETENSKAP Fysik Den kondenserade materiens fysik hsv//swe
- NATURAL SCIENCES Physical Sciences Condensed Matter Physics hsv//eng
- NATURVETENSKAP Kemi Oorganisk kemi hsv//swe
- NATURAL SCIENCES Chemical Sciences Inorganic Chemistry hsv//eng
- CO adsorption
- In-situ observation
- Ir(111)
- NAP-XPS
- NO + CO reaction
- NO adsorption
Added entries (persons, corporate bodies, meetings, titles ...)
- Suzuki, K.Keio University (author)
- Toyoshima, R.Keio University (author)
- Monya, Y.Keio University (author)
- Yoshida, M.Keio University (author)
- Isegawa, K.Keio University (author)
- Amemiya, K.Graduate University for Advanced Studies (author)
- Mase, K.Graduate University for Advanced Studies (author)
- Mun, B. S.Gwangju Institute of Science and Technology (author)
- Arman, M. A.Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-afa (author)
- Grånäs, E.Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-eng (author)
- Knudsen, J.Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-jks (author)
- Schnadt, J.Lund University,Lunds universitet,Synkrotronljusfysik,Fysiska institutionen,Institutioner vid LTH,Lunds Tekniska Högskola,Synchrotron Radiation Research,Department of Physics,Departments at LTH,Faculty of Engineering, LTH(Swepub:lu)slju-jst (author)
- Kondoh, H.Keio University (author)
- Keio UniversityGraduate University for Advanced Studies (creator_code:org_t)
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- In:Topics in Catalysis: Springer Science and Business Media LLC59:5-7, s. 487-4961022-55281572-9028
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