PRODUCT ANALYSIS FROM D2O ELECTROLYSIS WITH PD AND TI CATHODES

被引:7
作者
BRILLAS, E
ESTEVE, J
SARDIN, G
CASADO, J
DOMENECH, X
SANCHEZCABEZA, JA
机构
[1] UNIV BARCELONA,FAC FIS,DEPT FIS APLICADA & ELECTR,E-08028 BARCELONA,SPAIN
[2] UNIV AUTONOMA BARCELONA,DEPT QUIM,E-08193 BARCELONA,SPAIN
[3] UNIV AUTONOMA BARCELONA,DEPT FIS,SERV FIS RADIAC,E-08193 BARCELONA,SPAIN
关键词
TRITIUM ANALYSIS; D2O ELECTROLYSIS; PD CATHODE; TI CATHODE; SIMS;
D O I
10.1016/0013-4686(92)85006-7
中图分类号
O646 [电化学、电解、磁化学];
学科分类号
081704 ;
摘要
The enrichment of tritium in the electrolyte and incorporation of T, Li and Pt in cathodes during the electrolysis of 0.1 M LiOD solutions with Pd and Ti cathodes in open cells have been studied. All electrolytes show an increase in their tritium activity which is explained by considering values for the T-D separation factor of all cathodes lower than 1. Accumulation of small amounts of T in the Pd bulk, proceeding from the absorption of the species pre-existing in the electrolyte, has been detected by electrolytic transfer of accumulated tritium to a 0.1 M LiOH solution, as well as by extraction of gases absorbed in the cathode, which were identified by mass spectrometry. Small quantities of Li and Pt are also incorporated in Pd and Ti cathodes, which increase by raising the current density. SIMS analysis of both cathodes show a preferential accumulation of Li and H in their surface layers and confirms the absence of T in Ti.
引用
收藏
页码:215 / 219
页数:5
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