Preparation of montmorillonite clays containing DTMPPA for Zinc extraction

被引：7

作者：

Bouazza, D.

Miloudi, H.

Sassi, M.

Boos, A.

Goetz, G.

Tayeb, A.

Bengueddach, A.

机构：

[1] Univ Oran Es Senia, Fac Sci, Dept Chim, Lab Chim Mat, Oran 31000, Algeria

[2] ULP, CNRS, UMR 7512, ECPM,Lab Chim Analyt & Minerale, F-67087 Strasbourg 2, France

来源：

JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS | 2006年 / 67卷 / 5-6期

关键词：

inorganic compounds; multilayers; infrared spectroscopy; X-ray diffraction; thermogravimetric analysis (TGA);

D O I：

10.1016/j.jpcs.2006.01.022

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Di(2,4,4-trimethylpentyl)phosphinic acid, 'DTMPPA' (Cyanex 272), was introduced into homoionic clays containing sodium by using two methods: a dry impregnation method (process 1) and an intercalation method (process 2). The total amount of loaded extractant was determined by NaOH titration of washings and/or mother- solutions in both cases. The solids obtained were characterized by infrared spectroscopy (IR), X-Ray diffraction and TGA-DTA analysis. The montmorillonite clays containing DTMPPA were used to successfully remove zinc from sulphuric dilute acidic solutions (pH 2-5), at constant ionic strength, I = 1. The metal extraction depends on pH. The clay containing DTMPPA loaded by process 1, that contains more DTMPPA than the clay loaded by process 2, shows a better performance in the extraction of zinc. (c) 2006 Elsevier Ltd. All rights reserved.

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收藏

页码：1032 / 1036

页数：5

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