Adsorption essays of palladium in modified silica gel with thiouronium groups: Experimental and theorical studies

• ALEXANDER CARREÑO G ^[1] ; EDUARDO SCHOTT V ^[1] ; XIMENA ZÁRATE B ^[1] ; RAMIRO ARRATIA-PEREZ ^[1] ; JUAN CARLOS VEGA DE K ^[2] ; MIGUEL MARDONES L ^[3] ; JUAN M MANRÍQUEZ ^[2] ; IVONNE CHÁVEZ M ^[2]
  1. [1] Universidad Andrés Bello

     Universidad Andrés Bello

     Santiago, Chile

     
  2. [2] Pontificia Universidad Católica de Chile

     Pontificia Universidad Católica de Chile

     Santiago, Chile

     
  3. [3] Fundación Chile Gerencia de Medio Ambiente y Metrología Química Laboratorio de Tecnologías Ambientales

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• Localización: Journal of the Chilean Chemical Society (Boletín de la Sociedad Chilena de Química), ISSN-e 0717-6309, ISSN 0366-1644, Vol. 56, Nº. 2, 2011, págs. 692-696
• Idioma: inglés
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• Resumen

  • 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.