Journal of the Chilean Chemical Society
versión On-line ISSN 0717-9707
CARRENO G, ALEXANDER et al. ADSORPTION ESSAYS OF PALLADIUM IN MODIFIED SILICA GEL WITH THIOURONIUM GROUPS: EXPERIMENTAL AND THEORICAL STUDIES. J. Chil. Chem. Soc. [online]. 2011, vol.56, n.2, pp. 692-696. ISSN 0717-9707. http://dx.doi.org/10.4067/S0717-97072011000200015.
The silylant 3-cloropropyltriethoxysilyl was anchored over silica gel in anhydrous conditions in order to react with thiourea to obtain modified silica gel with thiouronium. The aim to obtain an inorganic support that is able to hijack metals from the VIII group such as palladium. The product was characterized by Sbet and FTIR infrared spectroscopy. For the determination of the structure in the modified silica gel NMR spectra of silicon and carbon were preformed in solid state. The coordination form of the modified silica gel to the metal was studied computationally in the context of the DFT theory, using the ADF code. This was a collaborative work with "Fundación Chile" for the recuperation of precious metals from the mining industry.
Palabras clave : silica gel; functionalization; coordination agents.