NDLI: Efficiency of isotope exchange between sodium 4-phenylbenzoate and activated tritium

Content Provider	Springer Nature Link
Author	Shevchenko, V. P. Razzhivina, I. A. Chernysheva, M. G. Badun, G. A. Nagaev, I. Yu. Shevchenko, K. V. Myasoedov, N. F.
Copyright Year	2015
Abstract	The efficiency of the protium–tritium isotope exchange in the sodium 4-phenylbenzoate (PBNa) molecule on activating the reaction on a tungsten filament at 1940 K (target temperature 77 and 295 K) and on heating the substrate supported on 5% Pd/C in the presence of gaseous tritium is compared. It is shown that the reaction mechanism is laregly determined by the properties of the material on which this reaction occurs and not only by the method of generation of activated tritium species. In the reaction of tritium atom with PBNa deposited on glass walls of the reaction vessel, the isotope substitution of tritium for protium occurred by the radical mechanism, leading to the formation of [$^{3}$H]PBNa and hydrogenation products. It is assumed that the spillover of tritium atom over the support (carbon) surface is accompanied by polarization of the electronic shell and formation of the cluster ($^{3}$ $^{+}$)( $$\bar e$$ ), which leads to changes in the composition of the reaction products. The combined treatment of PBNa on 5% Pd/C allows estimation of the concentration of clusters on the carbon surface, which reaches 10.9 particles per 100 nm$^{2}$ (9.2 nm$^{2}$ per cluster).
Starting Page	312
Ending Page	320
Page Count	9
File Format	PDF
ISSN	10663622
Journal	Radiochemistry
Volume Number	57
Issue Number	3
e-ISSN	16083288
Language	English
Publisher	Pleiades Publishing
Publisher Date	2015-06-06
Publisher Place	Moscow
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	hydrogen isotope exchange sodium 4-phenylbenzoate tritium activation Nuclear Chemistry Chemistry/Food Science
Content Type	Text
Resource Type	Article
Subject	Physical and Theoretical Chemistry

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