期刊
THERMOCHIMICA ACTA
卷 453, 期 1, 页码 72-74出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.tca.2006.10.016
关键词
chelating centers; silica gel; adsorption; calorimetry; thermochemical data
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.
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