RT Journal Article T1 Mass-transfer and supersaturation in crystal growth in gels: Application to CaSO4·2H2O A1 Prieto Rubio, Manuel A1 Viedma Molero, Cristóbal A1 López-Acevedo Cornejo, María Victoria A1 Martín-Vivaldi Caballero, Juan Luis A1 López De Andrés, María Sol AB 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. PB Elsevier Science B.V. SN 0022-0248 YR 1988 FD 1988-10-01 LK https://hdl.handle.net/20.500.14352/56790 UL https://hdl.handle.net/20.500.14352/56790 LA eng DS Docta Complutense RD 29 abr 2025