A 31P CP/MAS NMR study of PbS surface O,O′O,O′-dialkyldithiophosphate lead(II) complexes
Larsson, Anna-Carin, Ivanov, Alexander V., Antzutkin, Oleg N. and Forsling, Willis. (2008) A 31P CP/MAS NMR study of PbS surface O,O′O,O′-dialkyldithiophosphate lead(II) complexes. Journal of Colloid and Interface Science, Vol.327 (No.2). pp. 370-376. ISSN 0021-9797Full text not available from this repository.
Official URL: http://dx.doi.org/10.1016/j.jcis.2008.08.031
31P CP/MAS NMR spectroscopy was used to study the adsorption of six different O,O′-dialkyldithiophosphate ions on the surface of synthetic galena (PbS). The 31P CP/MAS NMR spectra of the surface lead(II) dithiophosphates were compared with the 31P CP/MAS NMR spectra of polycrystalline lead(II) dithiophosphate complexes of the same ligands. Surface complexation of the dialkyldithiophosphate ions was established on the surface of PbS. A terminal S,S′-chelating coordination is suggested for the surface complexes. The bulkier alkyl groups lead to surface precipitation in addition to the surface adsorption. Derivatives of monothiophosphoric and phosphoric acids were displayed as hydrolysis products of dialkyldithiophosphates on the synthetic PbS, the amount of which depends on the type of alkyl group.
|Item Type:||Journal Article|
|Subjects:||Q Science > QC Physics|
|Divisions:||Faculty of Science > Physics|
|Journal or Publication Title:||Journal of Colloid and Interface Science|
|Publisher:||Academic Press Inc. Elsivier Science|
|Date:||15 November 2008|
|Page Range:||pp. 370-376|
|Access rights to Published version:||Restricted or Subscription Access|
|Funder:||Agricola Research Center at Luleå University of Technology, Strategic Mining Research Program at the Swedish Governmental Agency for Innovation Systems (Vinnova), Swedish Council for Planning and Coordination of Research (FRN), J.C. and Seth M. Kempe Foundation|
|Version or Related Resource:||Part of the results has been presented at the Centenary of Flotation Symposium held in Brisbane, Australia, June 6–9, 2005.|
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