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KINETICS OF a-FeO(OH) FORMATION IN WEAK ACIDIC MEDIUM
Alternative TitleActa Phys.-Chim. Sin.
Zhang Yi1; Wang Yingxia2; Hua Tongwen2
1990
Source PublicationACTA PHYSICO-CHIMICA SINICA
ISSN1000-6818
Volume6Issue:6Pages:673-680
AbstractThe kinetics of a-FeO(OH) formation in weak acidic medium was studied, The effects of initial concentration, temperature, pH value, partial presure of oxygen, air flow raw and agitating intensity On the oxidation rate of Fe(OH:) suspensions have been. investigated. It is confirmed that reaction order for Fe(II) is zero at the stage of a-FeO(OH) seeds formation, and around 0.5 at the stage of the seeds growth, and in both. processes of the partial pressure of oxygen appears to be first order, The activation energy is determined respectively, Dissolution-oxidation equi librium existing in the process of seeds formation has been assumed, by which the zero order reaction for Fe(II) and plateau in the pH-t curve may be explained. Physical process is the rate determining step of the heterogeneous reaction, The studies of the kinetics of a-FeO(OH) formation may provide some fundamental in formation for the reactor design, the engineering scale up and the optimizing control for the industrial process.; The kinetics of a-FeO(OH) formation in weak acidic medium was studied, The effects of initial concentration, temperature, pH value, partial presure of oxygen, air flow raw and agitating intensity On the oxidation rate of Fe(OH:) suspensions have been. investigated. It is confirmed that reaction order for Fe(II) is zero at the stage of a-FeO(OH) seeds formation, and around 0.5 at the stage of the seeds growth, and in both. processes of the partial pressure of oxygen appears to be first order, The activation energy is determined respectively, Dissolution-oxidation equi librium existing in the process of seeds formation has been assumed, by which the zero order reaction for Fe(II) and plateau in the pH-t curve may be explained. Physical process is the rate determining step of the heterogeneous reaction, The studies of the kinetics of a-FeO(OH) formation may provide some fundamental in formation for the reactor design, the engineering scale up and the optimizing control for the industrial process.
SubtypeArticle
WOS HeadingsScience & Technology ; Physical Sciences
DOI10.3866/PKU.WHXB19900608
URL查看原文
Indexed BySCI
Language英语
WOS Research AreaChemistry
WOS SubjectChemistry, Physical
WOS IDWOS:000207573200007
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Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ipe.ac.cn/handle/122111/7948
Collection研究所(批量导入)
Affiliation1.Acad Sinica, Inst Chem Met, Beijing, Peoples R China
2.Peking Univ, Dept Chem, Beijing 100871, Peoples R China
Recommended Citation
GB/T 7714
Zhang Yi,Wang Yingxia,Hua Tongwen. KINETICS OF a-FeO(OH) FORMATION IN WEAK ACIDIC MEDIUM[J]. ACTA PHYSICO-CHIMICA SINICA,1990,6(6):673-680.
APA Zhang Yi,Wang Yingxia,&Hua Tongwen.(1990).KINETICS OF a-FeO(OH) FORMATION IN WEAK ACIDIC MEDIUM.ACTA PHYSICO-CHIMICA SINICA,6(6),673-680.
MLA Zhang Yi,et al."KINETICS OF a-FeO(OH) FORMATION IN WEAK ACIDIC MEDIUM".ACTA PHYSICO-CHIMICA SINICA 6.6(1990):673-680.
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