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Mass-transfer and supersaturation in crystal growth in gels: Application to CaSO4·2H2O

Prieto Rubio, Manuel and Viedma Molero, Cristóbal and López-Acevedo Cornejo, Victoria and Martín-Vivaldi Caballero, Juan Luis and López Andrés, Sol (1988) Mass-transfer and supersaturation in crystal growth in gels: Application to CaSO4·2H2O. Journal of Crystal Growth , 92 (1-2). pp. 61-68. ISSN 0022-0248

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Abstract

Supersaturation evaluation is an essential requirement to describe, confront and explain crystal growth experiences. However, in the particular case of crystal growth in gels, experiences are often described by attending to the initial concentration of reagent. This fact is connected with deficiencies in the theoretical quantification of mass-transfer, and therefore in both time and location prediction for the first precipitate. In this paper laboratory experiences have been specifically designed to test supersaturation evolution through an actual (finite) diffusion system. The problem is carried out by keeping into account several complexity factors: free ions as well as complexes and silica gel Na+ and Cl− “unloading” are considered to evaluate the supersaturation.

Item Type:Article
Uncontrolled Keywords:Supersaturation; Gel; Chemistry; Crystal Growth
Subjects:Sciences > Geology > Crystallography
ID Code:10585
Deposited On:03 May 2010 11:16
Last Modified:03 May 2010 11:16

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