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The Dissolution of Amorphous Silica in the Presence of Tropolone Under Acidic Conditions

Published online by Cambridge University Press:  01 January 2024

Mayumi Etou ,
Yutaka Tsuji ,
Kenji Somiya ,
Yoshihiro Okaue  and
Takushi Yokoyama
Mayumi Etou
Affiliation:
Department of Chemistry, Faculty of Science, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, 8128581, Fukuoka, Japan
Yutaka Tsuji
Affiliation:
Kurume National College of Technology, Komorino, Kurume, 8308555, Fukuoka, Japan
Kenji Somiya
Affiliation:
JFE Engineering, Suehiro-cho, Tsurumi-ku, Yokohama, 2308611, Kanagawa, Japan
Yoshihiro Okaue
Affiliation:
Department of Chemistry, Faculty of Science, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, 8128581, Fukuoka, Japan
Takushi Yokoyama*
Affiliation:
Department of Chemistry, Faculty of Science, Kyushu University, 6-10-1, Hakozaki, Higashi-ku, 8128581, Fukuoka, Japan
*
*E-mail address of corresponding author: yokoyamatakushi@chem.kyushu-univ.jp
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Abstract

Dissolution of amorphous silica or silicate is an important reaction to release silicic acid in natural water and this reaction is affected by several factors. The existence of a natural organic compound, tropolone, because of its abundance, is of particular importance. In the present study, the dissolution of amorphous silica in the presence of tropolone (HL) was investigated in an aqueous solution under acidic conditions. The dissolution is controlled by the reaction between silicic acid and tropolone (Si(OH)4 + 3HL + H+ ⇌ SiL3+ + 4H2O), where the conditional formation constant K = [SiL3+]/[Si(OH)4][HL]3[H+]). The solubility of amorphous silica in the presence of tropolone was significantly greater than that in pure water due to the formation of the Si-tropolonate complex in the solution. The acceleration of silica dissolution by tropolone depends on the reaction pH and tropolone concentration. The solubility of the amorphous silica in the tropolone solution at pH 1 was approximately ten times greater than in the 0.1 mol/dm3 HCl used as a reference. This increase in the solubility correlates to a K value of the Si-tropolone complex at each pH. From the solubility experiments, the conditional formation constants (log K) of the Si-tropolonate complex at each reaction pH 1, 2, and 3 were 6.39, 5.88, and 5.77, respectively. The significant acceleration of the dissolution of amorphous silica by tropolone at pH 1 can be attributed to the large formation constant of the Si-tropolonate complex.

Keywords

Amorphous Silica DissolutionDissolution Rate ConstantSolubilityTropolone
Type
Article
Information
Clays and Clay Minerals , Volume 62 , Issue 3 , June 2014 , pp. 235 - 242
Copyright
Copyright © Clay Minerals Society 2014

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References

Bai, S. Tsuji, Y. Okaue, Y. and Yokoyama, T., 2008 First detection of a silicic acid complex with a catechol derivative under natural conditions Chemistry Letters 37 1168–1169.CrossRefGoogle Scholar
Bai, S. Tsuji, Y. Okaue, Y. and Yokoyama, T., 2011 Complexation of silicic acid with tiron on aqueous solution under near natural conditions Journal of Solution Chemistry 40 348–356.CrossRefGoogle Scholar
Bennett, P.C. and Siegel, D.I., 1987 Increased solubility of quartz in water due to complexation by dissolved organic compounds Nature 326 684–687.CrossRefGoogle Scholar
Bennett, P.C. Melcer, M.E. Siegel, D.I. and Hassett, J.P., 1988 The dissolution of quartz in dilute aqueous solutions of organic acids at 25°C Geochimica et Cosmochimica Acta 52 1521–1530.CrossRefGoogle Scholar
Bird, G. Boon, J. and Stone, T., 1986 Silica transport during stream injection into oil sands 1. Dissolution and precipitation kinetics of quartz: new results and review of existing data Chemical Geology 54 69–80.CrossRefGoogle Scholar
Dandurand, J. and Schott, J., 1987 New data on the solubility of amorphous silica in organic compound-water solutions and a new model for the thermodynamic behavior of aqueous silica in aqueous complex solutions Journal of Solution Chemistry 16 237–256.CrossRefGoogle Scholar
Iler, R.K., 1979 The Chemistry of Silica: Solubility, Polymerization, Colloid and Surface Properties and Biochemistry New York Wiley.Google Scholar
Kawano, M. and Hwang, J., 2010 Enhancement of dissolution rates of amorphous silica by interaction with bovine serum albumin at different pH conditions Clays and Clay Minerals 58 272–279.CrossRefGoogle Scholar
Kawano, M. and Hwang, J., 2010 Influence of guanidine, imidazole, and some heterocyclic compounds on dissolution rates of amorphous silica Clays and Clay Minerals 58 757–765.CrossRefGoogle Scholar
Kawano, M. and Obokata, S., 2007 The effect of amino acids on the dissolution rates of amorphous silica in near-neutral solution Clays and Clay Minerals 55 361–368.CrossRefGoogle Scholar
Öhman, L. Nordin, A. Sedeh, I.F. and Sjöberg, S., 1991 Equilibrium and structural studies of silicon(IV) and aluminium(III) in aqueous solution. 28. Formation of soluble silicic acid-ligand complexes as studied by potentiometric and solubility measurements Acta Chemica Scandinavica 45 335–341.CrossRefGoogle Scholar
Plettinck, S. Chou, L. and Wollast, R., 1994 Kinetics and mechanisms of dissolution of silica at room temperature and pressure Mineralogical Magazine 58A 728–729.CrossRefGoogle Scholar
Pokrovsky, O.S. Golubev, S.V. and Mielczarski, J.A., 2006 Kinetics evidence of the existence of positively charged species at the quartz-aqueous solution interface Journal of Colloid and Interface Science 296 189–194.CrossRefGoogle ScholarPubMed
Poulson, S.R. Drever, J.I. and Stillings, L.L., 1997 Aqueous Si-oxalate complexing, oxalate adsorption onto quartz, and the effect of oxalate upon quartz dissolution rates Chemical Geology 140 1–7.CrossRefGoogle Scholar
Sjöberg, S. Ingri, N. Nenner, A. and Öhman, L., 1985 Equilibrium and structural studies of silicon(IV) and aluminium(III) in aqueous solution. 12. A potentiometric and 29Si-NMR study of silicon tropolonates Journal of Inorganic Biochemistry 24 267–277.CrossRefGoogle Scholar
Weiss, A. Herzog, A., Bendz, G. and Lindqvist, I., 1978 Isolation and characterization of a silicon-organic complex from plants Biochemistry of Silicon and Related Problems New York Plenum 109–125.CrossRefGoogle Scholar