DIFFERENTIAL CAPACITANCE OF LIQUID/LIQUID INTERFACES - EFFECT OF ELECTROLYTES PRESENT IN EACH PHASE

被引：44

作者：

PEREIRA, CM ^{[1
]}

MARTINS, A ^{[1
]}

ROCHA, M ^{[1
]}

SILVA, CJ ^{[1
]}

SILVA, F ^{[1
]}

机构：

[1] UNIV PORTO, FAC CIENCIAS, DEPT QUIM, P-4000 OPORTO, PORTUGAL

来源：

JOURNAL OF THE CHEMICAL SOCIETY-FARADAY TRANSACTIONS | 1994年 / 90卷 / 01期

关键词：

D O I：

10.1039/ft9949000143

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The effect of electrolyte type and concentration on the differential capacitance of the 1,2-dichloroethane/water interface has been measured. The results show that the differential capacitance is controlled by the pair ion (1)-counter-ion (2), where 1 and 2 denote the different phases. At constant organic electrolyte composition the capacity increases in the order, F-<SO42-<HO-<ClO4-,Li+<H+<K+<Mg2+<Ba2+<Sr(2+)approximate to Ca2+. By contrast, at positive potentials and constant aqueous electrolyte composition, the capacitance decreases in the order, TPA(+)>MTMA(+)>TBA(+)>TOA(+),TPB->TCPB-. In very dilute solutions, the effects are not noticeable.

引用

页码：143 / 148

页数：6

共 32 条

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