Document Detail

Influence of kinetics on the determination of the surface reactivity of oxide suspensions by acid-base titration.
MedLine Citation:
PMID:  16949092     Owner:  NLM     Status:  MEDLINE    
The effect of acid-base titration protocol and speed on pH measurement and surface charge calculation was studied on suspensions of gamma-alumina, hematite, goethite, and silica, whose size and porosity have been well characterized. The titration protocol has an important effect on surface charge calculation as well as on acid-base constants obtained by fitting of the titration curves. Variations of pH versus time after addition of acid or base to the suspension were interpreted as diffusion processes. Resulting apparent diffusion coefficients depend on the nature of the oxide and on its porosity.
M Duc; F Adekola; G Lefèvre; M Fédoroff
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2006-09-01
Journal Detail:
Title:  Journal of colloid and interface science     Volume:  303     ISSN:  0021-9797     ISO Abbreviation:  J Colloid Interface Sci     Publication Date:  2006 Nov 
Date Detail:
Created Date:  2006-10-02     Completed Date:  2007-09-19     Revised Date:  2009-11-11    
Medline Journal Info:
Nlm Unique ID:  0043125     Medline TA:  J Colloid Interface Sci     Country:  United States    
Other Details:
Languages:  eng     Pagination:  49-55     Citation Subset:  IM    
Université Pierre et Marie Curie-Paris 6, ENSCP, CNRS-UMR 7575, Laboratoire d'Electrochimie et de Chimie Analytique, 11, Rue Pierre et Marie Curie, 75231 Paris Cedex 05, France.
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MeSH Terms
Aluminum Oxide / chemistry*
Ferric Compounds / chemistry*
Iron Compounds / chemistry*
Silicon Dioxide / chemistry*
Reg. No./Substance:
0/Ferric Compounds; 0/Iron Compounds; 0/Suspensions; 1309-37-1/ferric oxide; 1310-14-1/goethite; 1344-28-1/Aluminum Oxide; 7631-86-9/Silicon Dioxide

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