Reactions Initiated by the β Decay of Tritium. III. The Tritium-Cyclopropane System

Abstract

The β decay of tritium in the gaseous tritium-cyclopropane system initiates reactions forming various tritiated compounds. Identified products are cyclopropane, propane, propylene, isobutane, ethane, ethylene, and acetylene. Dependence of the labeling yields on T2 concentration clearly showed that energetic electrons as well as the decay species (He3T)+ initiated the labeling processes. Ionic and/or hot-atom reactions are assumed to occur to explain the effects of nitric oxide and temperature on the labeling yields.

The Radiolysis of Aqueous Perchloric Acid Solutions1

“…The results are given in Fig. 5. The reaction of Celv with II202 in perchloric acid is relatively slow and not well understood.…”

Tritium β-Decay Induced Reactions in the Polystyrene Fluff

“…A mechanism for tritium incorporation by radiationinduced intermediates from the tritium molecule has been proposed by Yang and Gant.6,7 The importance of such processes is apparently magnified in the heterogeneous tritium-polystyrene fluff system. Radiolytic intermediates from polystyrene lead primarily to cross linking of the polymer.…”

Theoretical investigation of the mechanism of tritiated methane dehydrogenation reaction using nickel-based catalysts

“…For every transition state, the intrinsic reaction coordinate (IRC) calculations were performed to further verify that the optimized transition state correctly connects the relevant reactant and product [31,32]. Rate constants were also calculated according to conventional transition state theory (TST) [33], including a tunneling correction based on Winger's formulation [34]. The hydrogen isotope effects were calculated on the basis of transition state theory at p = 1 atm and T = 973.15 K (700 • C).…”

“…If decay occurs in gaseous tritium, the reaction may be written as T 2 → (He 3 T) + + e − . From 1950s, the researchers found that the beta decay of tritium could initiate many high energy processes, such as the tritium-ethylene [33] and tritium-cyclopropane systems [34]. Thus, it is considered that beta decay of tritium could provide energies to assist the dehydrogenation of the tritiated methane.…”