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

• Tipo: Artigo em Revista Científica Internacional
• Data: 1994

Autores

PEREIRA, CM (Autor) FCUP; MARTINS, A (Autor) Outra; ROCHA, M (Autor) Outra; SILVA, CJ (Autor) Outra; SILVA, F (Autor) FCUP

Revista

Título: Journal of the Chemical Society - Faraday Transactions

Vol. 90

Páginas: 143-148

ISSN: 0956-5000

Editora: Royal Society of Chemistry

Indexação

ISI Web of Knowledge - 44 Citações

Scopus - 46 Citações

Classificação Científica

FOS: Ciências exactas e naturais > Química

Outras Informações

ID Authenticus: P-001-KGK

DOI: 10.1039/ft9949000143

Abstract (EN): 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.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 6