Fluorosilicate equilibria in acid solution

Ciavatta, Liberato; Iuliano, Mauro; Porto, R.

doi:10.1016/s0277-5387(00)80410-6

Cited by 30 publications

(34 citation statements)

References 9 publications

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“…However, there are few studies for the equilibrium reaction of SiF6 2-complex anion species in the oxide deposition in liquid phase, whereas the equilibrium condition and reaction constant have been studied in detail. 13), 14) In this study, we focus on the dissolving species, SiF4 which can be detected as the intermediate species in the gaseous phase with the vaporization of the reaction solution in the LPD process. We discuss the equilibrium reaction in the measurement of UV and IR absorption spectra, vapor pressure and electric conductivity.…”

Section: Introductionmentioning

confidence: 99%

Equilibrium of dissolving species in aqueous H2SiF6 solution during the liquid phase deposition reaction

Mizuhata

Saito

Takee

et al. 2009

J. Ceram. Soc. Japan

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The equilibrium reaction of H2SiF6 solution in the LPD method was investigated by the measurement of UV and IR spectroscopies, vapor pressure and electric conductivity. These measurements were carried out by adding the F -scavenger such as H3BO3 and Al metal which shifts the equilibrium reaction. The experimental results strongly suggested the presence of SiF4 and [SiF6·SiF4] 2-in H2SiF6 solution. These species were estimated to be involved in the LPD process as intermediates and important for controlling the deposition process of metal oxide.

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Section: Introductionmentioning

confidence: 99%

Equilibrium of dissolving species in aqueous H2SiF6 solution during the liquid phase deposition reaction

Mizuhata

Saito

Takee

et al. 2009

J. Ceram. Soc. Japan

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“…Phosphate is commonly encountered in cellular systems and is on the order of 1 mM in blood serum as inorganic phosphates. 33,34 Even in the presence of excellent chelating ligands such as DHBA, beryllium precipitates in the presence of a phosphate buffer. The first stable beryllium complex isolated within a phosphate medium was (NH 4 ) 18 [Al 6 Be 6 (CA) 6 (PO 4 ) 8 ] based on the Be 2 Al 2 CA 4 complex.…”

Section: Introductionmentioning

confidence: 99%

The bioinorganic chemistry and associated immunology of chronic beryllium disease

et al. 2008

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Chronic beryllium disease (CBD) is a debilitating, incurable, and often fatal disease that is caused by the inhalation of beryllium particulates. The growing use of beryllium in the modern world, in products ranging from computers to dental prosthetics (390 tons of beryllium in the US in the year 2000) necessitates a molecular based understanding of the disease in order to prevent and cure CBD. We have investigated the molecular basis of CBD at Los Alamos National Laboratory during the past six years, employing a multidisciplinary approach of bioinorganic chemistry and immunology. The results of this work, including speciation, inhalation and dissolution, and immunology will be discussed.

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“…1b and c) this requires a total fluoride concentration that exceeds 0.01 m. When T F exceeds 1 m, SiF 6 2À dominates fluoride speciation at pH < 5. There is consensus in the literature that H 2 SiF 6 is a very strong acid similar to H 2 SO 4 (Urbansky, 2002) and is present in its fully dissociated form, SiF 6 2À , at pH > 0.65 Ciavatta et al (1988) and Sudakova et al (1978) pointed out that H 2 SiF 6 exhibits two deprotonation reactions.…”

Section: Hf-sio 2 -H 2 Omentioning

confidence: 99%