Extraction of Perchlorate Using Porous Organosilicate Materials

Autor: Jenna R. Taft, Martin H. Moore, Anthony P. Malanoski, Ronald L. Siefert, Brian J. Melde, Iwona A. Leska, Brandy J. Johnson, Jeffrey R. Deschamps
Jazyk: angličtina
Rok vydání: 2013
Předmět:
Zdroj: Materials, Vol 6, Iss 4, Pp 1403-1419 (2013)
Druh dokumentu: article
ISSN: 1996-1944
DOI: 10.3390/ma6041403
Popis: Sorbent materials were developed utilizing two morphological structures, comprising either hexagonally packed pores (HX) or a disordered pore arrangement (CF). The sorbents were functionalized with combinations of two types of alkylammonium groups. When capture of perchlorate by the sorbents was compared, widely varying performance was noted as a result of differing morphology and/or functional group loading. A material providing improved selectivity for perchlorate over perrhenate was synthesized with a CF material using N-trimethoxysilylpropyl-N,N,N-trimethylammonium chloride. Materials were applied in batch and column formats. Binding isotherms followed the behavior expected for a system in which univalent ligands of varying affinity compete for immobilized sites. Performance of the sorbents was also compared to that of commercial Purolite materials.
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