Počet záznamů: 1

Selected Ion Flow Tube Study of Ion Molecule Reactions of N+(P-3) and Kr+ with C-3 Hydrocarbons Propane, Propene, and Propyne

  1. 1.
    0360933 - UFCH-W 2012 RIV US eng J - Článek v odborném periodiku
    Dryahina, Kseniya - Cunha de Miranda, B. K. - Španěl, Patrik - Žabka, Ján - Alcaraz, C. - Herman, Zdeněk
    Selected Ion Flow Tube Study of Ion Molecule Reactions of N+(P-3) and Kr+ with C-3 Hydrocarbons Propane, Propene, and Propyne.
    Journal of Physical Chemistry A. Roč. 115, č. 25 (2011), s. 7310-7315 ISSN 1089-5639
    Grant CEP: GA AV ČR IAA400400702; GA MŠk(CZ) OC10046
    Výzkumný záměr: CEZ:AV0Z40400503
    Klíčová slova: N+ ions * reactions relevant * titans ionosphere
    Kód oboru RIV: CF - Fyzikální chemie a teoretická chemie
    Impakt faktor: 2.946, rok: 2011

    Reactions of N-14(+)(P-3), N-15(+)(P-3), and Kr+ with propane, propene, and propyne were studied using the selected ion flow tube, SIFT, technique. Thermal rate constants in all N+/C-3 systems were k = (2 +/- 0.4) x 10(-9) cm(3) molecule(-1)s(-1) close to the collisional rate constants. With propane and propene, only hydrocarbon ions were found among the products of reactions with N+; in propyne about 15% of the products were N-containing ions (C3H2N+, C2H4N+, C2H3N+, C2H2N+), and the rest were hydrocarbon ions. A comparison with product ions from electron transfer between Kr+ (of recombination energy similar to that for N+(P-3)) and the C-3 hydrocarbons and further analysis of the results led to an estimation of an approximate ratio of electron transfer vs hydride-ion transfer reactions leading to the hydrocarbon product ions: in propane the ratio was 2:1, in propene 3:1, and in propyne 5:1. A fraction of product ions resulted from reactions leading to the excited neutral product N*.
    Trvalý link: http://hdl.handle.net/11104/0006504