Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/99409
Type: Artigo de periódico
Title: Chemisorption Of Some Divalent Cations On Silica Modified Through The Reaction Of Pentane-2,4-dione With 3-propylethylenediamine Silica Gel
Author: Espinola J.G.P.
de Freitas J.M.P.
de Oliveira S.F.
Airoldi C.
Abstract: The reaction of 3-propylethylenediamine groups covalently bonded to silica gel with pentane-2,4-dione in benzene resulted in a modified surface having 11.4·10-4 mol g-1 of ligand sites which adsorb the divalent cations Co2+, Ni2+, Cu2+ and Zn2+ from ethanol solution with maximum adsorptions of 5.0·10-4 mol g-1, 2.0·10-4 mol g-1, 5.0·10-4 mol g-1 and 5.9·10-4 mol g-1, respectively. The adsorption isotherms are very similar in shape for all the cations and conform to the Langmuir model. The complexes formed on the surface have a molar composition or one cation to two anchored groups of Schiff bases and the geometries of the complexes are similar to those obtained in solution. © 1992.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/0166-6622(92)80211-J
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0002536224&partnerID=40&md5=5879c4292bf411394dbb2be3e8493696
Date Issue: 1992
Appears in Collections:Unicamp - Artigos e Outros Documentos

Files in This Item:
File SizeFormat 
2-s2.0-0002536224.pdf522.35 kBAdobe PDFView/Open


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.