Studies on iodine as a scavenger in irradiated hydrocarbons and hydrocarbon-alcohol solutions

Abstract

The yield of those species produced in X-irradiated hydrocarbon-iodine solutions which give rise to I3upon the subsequent addition of ethanol has been measured. While it has been generally assumed that I2 reacts with thermal hydrogen atoms, it is suggested here that in fact I2 reacts preferentially with electrons and that G(I3~) = G(e"). This view is in part suggested by the behavior of solutions to which alcohols are added prior to irradiation. The extrapolated yields of Cr(l3~) in n-hexane, cyclohexane, and 3-methylpentane are 2.42,1.94, and 1.56, respectively.

Universal temperature dependence of the ion-neutral-neutral three-body recombination rate

“…The experimental data points of panel (a) have been obtained from Ref. [23], for panel (b) the data points are taken from Ref. [23] for He, Ne and Ar, whereas Kr and Xe data are taken from Ref.…”

“…[10]. In panel (b) there are two data points for Ar, the first one (from left to right) corresponds to 300 K [10]and the second to 320 K [23].…”

Controllability of cupric particle synthesis by linear alcohol chain number as additive and pH control in cupric acetate solution using X-ray radiolysis

“…1(d). effective reaction rate, which is dependent on the formation of radicals, scavenge rate and redox rate (Weiss, 1944(Weiss, , 1946Miller, 1950;Samuel & Magee, 1953;Henglein, 2000;Johnsen et al, 1969;Buxton et al, 1988;Ervens et al, 2003). Now, we compare the size of the respective particles.…”

“…11(d), the EDX spectrum is not split for pH = 3, while the other spectra are split or composed of several peaks. The difference is attributed to the selection rule, splitting degeneracy and electron state modulation by oxidization (Johnsen et al, 1969). Besides, the Raman spectra of both particles obtained at pH = 6 and 7 in Fig.…”

“…As is well known, metallic particles are produced by a redox reaction within the solution. The X-ray or -ray irradiation technique enables us to easily induce chemical reactions to obtain novel metallic particles, as the X-ray or -ray irradiation from synchrotron radiation provides hydrogen and hydroxyl radicals in the following manner (Weiss, 1944(Weiss, , 1946Miller, 1950;Samuel & Magee, 1953;Henglein, 2000;Johnsen et al, 1969;Buxton et al, 1988):…”