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Titolo:
REDUCTION OF ANODIC LEAD SULFATE FILM ON LEAD IN SULFURIC-ACID-SOLUTION
Autore:
CAI WB; ZHUANG JH; ZHOU WF;
Indirizzi:
FUDAN UNIV,DEPT CHEM SHANGHAI 200433 PEOPLES R CHINA
Titolo Testata:
Huaxue xuebao
fascicolo: 11, volume: 53, anno: 1995,
pagine: 1047 - 1053
SICI:
0567-7351(1995)53:11<1047:ROALSF>2.0.ZU;2-A
Fonte:
ISI
Lingua:
CHI
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
8
Recensione:
Indirizzi per estratti:
Citazione:
W.B. Cai et al., "REDUCTION OF ANODIC LEAD SULFATE FILM ON LEAD IN SULFURIC-ACID-SOLUTION", Huaxue xuebao, 53(11), 1995, pp. 1047-1053

Abstract

The electroreduction of PbSO4 film formed on Pb in 4.5mol . dm(-3)H(2)SO(4) at -0.6V (vs. Hg/Hg2SO4/4.5mol . dm(-3)H(2)SO(4)) for 20 min has been studied using linear sweep voltammetry, chronoamperometry, in conjunction with AC impedance method. The experimental results show that most of the film can be electroreduced. At early stage, the electroreduction takes place at the surface of the lead sulfate grains in the film, conforming to an instaneous nucleation and three-dimensional growth mechanism under diffusion control, Then Pb2+ is electrodeposited on the lead layer formed previously, which is limited by the radial diffusion of Pb2+ out of the grains, The liquid films among the particlesin the grains may be the major passages for ion transportation.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 01/12/20 alle ore 10:34:06