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Type: Artigo de periódico
Title: Structure Of Copper Complexes Adsorbed On A Silica Gel Surface Chemically Modified With Benzimidazole
Author: Filho N.L.D.
Gushikem Y.
Rodrigues E.
Moreira J.C.
Polito W.L.
Abstract: Silica gel having a particle size between 0.2 and 0.05 mm and a specific surface area, S BET = 473 m 2 g -1, was chemically modified with benzimidazole. Adsorption isotherms of CuX 2 (X = Cl, Br or ClO 4) from ethanol and acetone solutions were studied at 298 K. The metal is bonded to the surface through the free nitrogen atom of the attached benzimidazole. The average number of ligands co-ordinated to the central metal ion was shown to depend on the solid surface loading by the solute. At low loading the electronic and ESR spectral parameters indicated that the copper ion is in a distorted-tetragonal symmetry field.
Rights: fechado
Identifier DOI: 10.1039/DT9940001493
Date Issue: 1994
Appears in Collections:Unicamp - Artigos e Outros Documentos

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