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The activation of NO molecule by Co^{2+} in CoZSM-5 in the presence of ammonia and pyridine molecules : IR studies

The activation of NO molecule by Co^{2+} in CoZSM-5 ...

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dc.contributor.author Góra-Marek, Kinga [SAP11018751] pl
dc.contributor.author Datka, Jerzy [SAP11003748] pl
dc.date.accessioned 2015-09-23T11:39:33Z
dc.date.available 2015-09-23T11:39:33Z
dc.date.issued 2011 pl
dc.identifier.issn 0920-5861 pl
dc.identifier.uri http://ruj.uj.edu.pl/xmlui/handle/item/15770
dc.language eng pl
dc.title The activation of NO molecule by Co^{2+} in CoZSM-5 in the presence of ammonia and pyridine molecules : IR studies pl
dc.type JournalArticle pl
dc.description.physical 181-185 pl
dc.abstract.en The effect of interaction of electron donor ammonia and pyridine molecules with Co2+ sites on the properties of these Co2+ ions, as well as the effect of adsorbed NO on the properties of NH3 interacting with Co2+ has been followed in the present study. It has been shown that the molecules NO interacting with Co2+ which bonds pyridine or ammonia molecules were strongly activated (NO stretching band was shifted to lower frequency by 60–110 cm−1). This activation could be realized by the transfer of electrons from basic molecules via Co2+ to antibonding π* orbitals of NO. The significant NO activation took place when NO interacted with Co2+ cations, which coordinated maximum possible number of NH3 molecules (NH3/Co = 6). For this case the formation of [Co(NH3)6NO]2+ complexes in which the transfer of full electrons from Co2+ to antibonding π* orbitals of NO occurred. Such strong activation of NO molecules by ammonia and pyridine molecules makes available the formation of N2O. The fact that NO accepts electron forming NO− and finally N2O indicates that NO acts as oxidant in the presence of [Co(py)]2+ or [Co(NH3)6]2+. On the other hand, earlier IR study showed that without preadsorbed basic molecules NO acted as reducer: Co3+ was reduced to Co2+ whereas NO oxidized to NO+. pl
dc.subject.en CoZSM-5 pl
dc.subject.en Co-nitrosyls pl
dc.subject.en NO adsorption pl
dc.description.volume 169 pl
dc.description.number 1 pl
dc.identifier.doi 10.1016/j.cattod.2010.11.053 pl
dc.identifier.eissn 1873-4308 pl
dc.title.journal Catalysis Today pl
dc.title.volume Jerzy Haber - a man who wanted to know and to understand : sixty years of activity in the field of chemistry and catalysis pl
dc.language.container eng pl
dc.affiliation Wydział Chemii : Zakład Chemii Nieorganicznej pl
dc.subtype Article pl
.pointsMNiSW [2011 A]: 40


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