Adsorption of Cu2+ on spherical Fe-MCM-41 and its application for oxidation of adamantane

被引：33

作者：

Parida, K. M. ^{[1
]}

Dash, Suresh K. ^{[2
]}

机构：

[1] Technol CSIR, Inst Minerals & Mat, Colloids & Mat Chem Dept, Bhubaneswar 751013, Orissa, India

[2] SOA Univ, Inst Tech Educ & Res, Dept Chem, Bhubaneswar 751030, Orissa, India

来源：

JOURNAL OF HAZARDOUS MATERIALS | 2010年 / 179卷 / 1-3期

关键词：

Fe-MCM-41; Cu2+ adsorption; Oxidation; Adamantane; SELECTIVE MESOPOROUS ADSORBENTS; CONTAINING MCM-41; MOLECULAR-SIEVES; IRON; REMOVAL; SILICAS; EPOXIDATION; SEPARATION; MECHANISM; CATALYSTS;

D O I：

10.1016/j.jhazmat.2010.03.051

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Fe-MCM-41 with varying Si/Fe ratios (20, 50, 70 and 90) were prepared by using cetyltrimethylammoniumbromide (CTAB) as the structure-directing agent (SDA), tetraethylorthosilicate (TEOS) as the silica source and ethanol as co-surfactant in alkaline medium. The characterization was done by SEM: UV-vis diffused reflectance and FT-IR. Adsorption of copper solutions with varying parameters such as concentration, temperature and pH were performed over Fe-MCM-41 samples. The experimental data fitted well to the Langmuir and Freundlich adsorption isotherm. Fe-MCM-41 having Si/Fe ratio (90) showed highest copper adsorption capacity at pH 5.5. Cu2+ concentration of 59.6 ppm and temperature 323 K. Fe-MCM-41(90)-Cu(59.6) was tested as a catalyst for oxidation of adamantane using hydrogen peroxide as the oxidant. The GC analyses revealed significant conversion of 32.5% and selectivity of 54% towards formation of 1-adamantanol. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：642 / 649

页数：8

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