Journal
CHEMICAL PHYSICS LETTERS
Volume 815, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.cplett.2023.140368
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The reactions of NO adsorbed on Irn+ and IrnO+ (n = 3-7) at high temperatures were studied using gas-phase thermal desorption spectrometry. Sequential release of NO molecules was observed after heating. Heating above 800 K resulted in the release of N2 molecules from Ir5+ and Ir6+ clusters after the reduction-decomposition of NO. Similar reactions were found on Rhn+ clusters. Ir7O+, which was slightly oxidized, showed high activity for NO reduction, indicating its uniqueness among Ir clusters.
Reactions of NO adsorbed on Irn+ and IrnO+ (n = 3-7) at high temperatures were experimentally investigated using gas-phase thermal desorption spectrometry. IrnNmOm+ and IrnNmOm+x+ were prepared by the reaction with NO at 300 K. After heating, NO molecules were released sequentially. For Ir5+ and Ir6+, heating above 800 K resulted in the release of N2 molecules from Ir5N4O4+, Ir5N5O5+, and Ir6N3O3+after the reduction-decomposition of NO. Similar reactions were also found on Rhn+ clusters. Furthermore, the slightly oxidized Ir7O+ showed high activity for NO reduction, which is considered unique to Ir clusters.
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