Sequestration of Cu(II), Ni(II), and Co(II) by ethyleneimine immobilized on silica

被引：20

作者：

Arakaki, Luiza N. H. ^{[1
]}

Alves, Ana Paula M.

da Silva Filho, Edson C.

Fonseca, Maria G.

Oliveira, Severino F.

Espinola, Jose Geraldo P.

Airoldi, Claudio

机构：

[1] Univ Fed Paraiba, CCEN, Dept Quim, BR-58051900 Joao Pessoa, Paraiba, Brazil

[2] Univ Estadual Campinas, Inst Quim, BR-13083970 Campinas, SP, Brazil

[3] Univ Fed Piaui, BR-64900000 Bom Jesus, Piaui, Brazil

来源：

THERMOCHIMICA ACTA | 2007年 / 453卷 / 01期

关键词：

chelating centers; silica gel; adsorption; calorimetry; thermochemical data;

D O I：

10.1016/j.tca.2006.10.016

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

Thermodynamic data on interaction of Cu(II), Ni(II), and Co(II) with silica modified with ethyleneimine are obtained by calorimetric titration. The amount of ethyleneimine anchored on silica surface was estimated to be 0.70 mmol g(-1). The enthalpies of binding Ni(II), Cu(II) and Co(II), are -3.59 +/- 0.001, -4.88 +/- 0.001, and -7.75 +/- 0.003 kJ mol(-1), respectively. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：72 / 74

页数：3

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