The Influence of Na+, Ca2+, Ba2+, and La3+ on the ζ Potential and the Yield Stress of Calcite Dispersions
作者： Roger Nyström , Mika Lindén , Jarl B. Rosenholm
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摘要: Abstract The effect of Na + , Ca 2+ Ba and La 3+ on the ζ potential calcite was investigated. Variations in lead to a changed aggregation behavior under shear concentrated dispersions though changes were moderate. This change characterized by measuring yield stress. Adding salt influences electrostatic interactions between particles leads shear-induced aggregation. structure formed at low rates assumed be partially or completely destroyed when increased. disintegrated partly reconstructed upon lowering rate. reduced relaxation not clearly observed for TiO 2 investigated J. Gustafsson (unpublished data). salts added chosen investigate influence cationic charge colloidal stability flow. For pure screening as expected. two divalent cations, showed similar adsorption behavior. Up certain concentration they caused an increased potential, result specific adsorption, after which it decreased. Particularly there is striking correlation Overall these four ions fit well into general behavior, with monovalent sodium showing weakest trivalent lanthanum strongest effect.
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Daniel S Cicerone, Alberto E Regazzoni, Miguel A Blesa, Electrokinetic properties of the calcite/water interface in the presence of magnesium and organic matter joint international conference on information sciences. ,vol. 154, pp. 423- 433 ,(1992) , 10.1016/0021-9797(92)90158-I
M. Kosmulski, J. Gustafsson, J. B. Rosenholm, Ion specificity and viscosity of rutile dispersions Colloid and Polymer Science. ,vol. 277, pp. 550- 556 ,(1999) , 10.1007/S003960050423
D. Siffert, P. Fimbel, Parameters affecting the sign and magnitude of the eletrokinetic potential of calcite Colloids and Surfaces. ,vol. 11, pp. 377- 389 ,(1984) , 10.1016/0166-6622(84)80291-7
Marek Kosmulski, Jan Gustafsson, Jarl B. Rosenholm, Correlation between the Zeta Potential and Rheological Properties of Anatase Dispersions. Journal of Colloid and Interface Science. ,vol. 209, pp. 200- 206 ,(1999) , 10.1006/JCIS.1998.5884
P Somasundaran, G.E Agar, The zero point of charge of calcite Journal of Colloid and Interface Science. ,vol. 24, pp. 433- 440 ,(1967) , 10.1016/0021-9797(67)90241-X
Dudley William Thompson, Pamela Gillian Pownall, Surface electrical properties of calcite Journal of Colloid and Interface Science. ,vol. 131, pp. 74- 82 ,(1989) , 10.1016/0021-9797(89)90147-1
Robert O James, Thomas W Healy, Adsorption of hydrolyzable metal ions at the oxide—water interface. I. Co(II) adsorption on SiO2 and TiO2 as model systems Journal of Colloid and Interface Science. ,vol. 40, pp. 42- 52 ,(1972) , 10.1016/0021-9797(72)90172-5
Thomas Foxall, Gordon C. Peterson, Henry M. Rendall, Alec L. Smith, Charge determination at calcium salt/aqueous solution interface Journal of the Chemical Society, Faraday Transactions 1: Physical Chemistry in Condensed Phases. ,vol. 75, pp. 1034- 1039 ,(1979) , 10.1039/F19797501034
Robert O James, Thomas W Healy, Adsorption of hydrolyzable metal ions at the oxide—water interface. II. Charge reversal of SiO2 and TiO2 colloids by adsorbed Co(II), La(III), and Th(IV) as model systems Journal of Colloid and Interface Science. ,vol. 40, pp. 53- 64 ,(1972) , 10.1016/0021-9797(72)90173-7
E. J. W. Verwey, Theory of the stability of lyophobic colloids ,(1948)