γ-Radiolysis of cyclohexane with electron scavengers. IV. CO₂ as an electron scavenger

Abstract

The room temperature liquid phase radiolysis of cyclohexane has been examined in the presence of CO2 and of CO2 with N2O. CO2 decreases the yields of all major products by scavenging electrons. It is concluded that the CO2 anion does not dissociate and that no precursors of cyclohexyl radicals are formed when it is finally neutralized by a hydrocarbon cation. No evidence that CO2 acts as an efficient O− scavenger in liquid phase cyclohexane was found. Its rate of reaction with O− appears comparable to its rate of reaction with electrons.

The effect of electron, positive ion, and hydrogen atom scavengers on the yields of atomic and molecular hydrogen in the radiolysis of liquid cyclohexane

“…laboratories, which are also given in Figure 1, show a form for the concentration dependence which is very similar to that given by the halides. These latter results are, in general, similar to those reported by other workers2, [16][17][18][19][20][21] though in certain cases slight differences exist in the values given for a particular solute concentration. In fact the literature values are not always internally consistent (e.g., hydrogen yields from 2.82 to 3.616 have been reported for 0.1 M N20 solutions in cyclohexane).…”