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dc.contributor.authorJi, X.
dc.contributor.authorSilvester, Debbie
dc.contributor.authorAldous, L.
dc.contributor.authorHardacre, C.
dc.contributor.authorCompton, R.
dc.date.accessioned2017-01-30T13:32:57Z
dc.date.available2017-01-30T13:32:57Z
dc.date.created2015-09-29T01:51:51Z
dc.date.issued2007
dc.identifier.citationJi, X. and Silvester, D. and Aldous, L. and Hardacre, C. and Compton, R. 2007. Mechanistic Studies of the Electro-oxidation Pathway of Ammonia in Several Room-Temperature Ionic Liquids. Journal of Physical Chemistry. 111: pp. 9562-9572.
dc.identifier.urihttp://hdl.handle.net/20.500.11937/32761
dc.identifier.doi10.1021/jp0715732
dc.description.abstract

A mechanistic study of the direct oxidation of ammonia has been reported in several room-temperature ionic liquids (RTILs), namely, [C4mim][BF4], [C4mim][OTf], [C2mim][NTf2], [C4mim][NTf2], and [C4mim][PF6], on a 10 ím diameter Pt microdisk electrode. In four of the RTILs studied, the cyclic voltammetric analysis suggests that ammonia is initially oxidized to nitrogen, N2, and protons, which are transferred to an ammonia molecule, forming NH4+ via the protonation of the anion(s) (A-). In contrast, NH4+ is formed first in [C4-mim][PF6], followed by the protonated anion(s), HA. In all five RTILs, both HA and NH4+ are reduced at the electrode surface, forming hydrogen gas, which is then oxidized. The effect of changing the RTIL anion is discussed, and this may have implications in the defining of pKa in RTIL media. This work also has implications in the possible amperometric sensing of ammonia gas.

dc.publisherAmerican Chemical Society
dc.titleMechanistic Studies of the Electro-oxidation Pathway of Ammonia in Several Room-Temperature Ionic Liquids
dc.typeJournal Article
dcterms.source.volume111
dcterms.source.startPage9562
dcterms.source.endPage9572
dcterms.source.issn0022-3654
dcterms.source.titleJournal of Physical Chemistry
curtin.accessStatusFulltext not available


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