Adsorption Mechanism of Longchain Alkylamines on Quartz and Albite

Vidyadhar, A and Das, Avimanyu and Rao, K Hanumantha (2008) Adsorption Mechanism of Longchain Alkylamines on Quartz and Albite. In: International Seminar on Mineral Processing Technology (MPT-2008) , April 22-24, 2008, Trivandrum,INDIA.



The mechanism of adsorption of long-chain alkylamines at pH 6-7 onto quartz and albite using the direct methods of FTIR and XPS spectroscopy. The spectroscopic data were correlated with the data of indirect methods of zeta-potential measurements and Hallimond flotation results. It was shown from infrared spectra that the amine cation forms strong hydrogen bonds with surface silanol groups. The XPS spectra revealed the presence of molecular amine together with the protonated amine on silicate surface. Based on these observations, a model of successive two-dimensional and three-dimensional precipiation was suggested to explain amine adsorption on silicate surface.

Item Type:Conference or Workshop Item (Paper)
Official URL/DOI:
Uncontrolled Keywords:Quartz, Albite, Adsorption, Flotation, Zeta-potential, FTIR, XPS
Divisions:Mineral Processing
ID Code:3740
Deposited By:Dr. Vidyadhar Ari
Deposited On:10 Aug 2011 16:57
Last Modified:27 Feb 2014 14:53
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