Study by XPS of different conditioning processes to improve the cation exchange in clinoptilolite

被引：49

作者：

Ruiz-Serrano, D. ^{[1
]}

Flores-Acosta, M. ^{[2
]}

Conde-Barajas, E. ^{[3
]}

Ramirez-Rosales, D. ^{[4
]}

Yanez-Limon, J. M. ^{[1
]}

Ramirez-Bon, R. ^{[1
]}

机构：

[1] IPN, Ctr Invest & Estudios Avanzados, Unidad Queretaro, Queretaro 76001, Qro, Mexico

[2] Univ Sonora, Ctr Invest Fis, Hermosillo 83190, Sonora, Mexico

[3] Inst Tecnol Celaya, Celaya 38010, Gto, Mexico

[4] Inst Politecn Nacl, UPA Lopez Mateos, Escuela Super Fis & Matemat, Mexico City 07738, DF, Mexico

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2010年 / 980卷 / 1-3期

关键词：

Zeolites; Clinoptilolite; Cation exchange; Photoelectron spectroscopy; Binding energy; Chemical composition; RAY PHOTOELECTRON-SPECTROSCOPY; NATURAL ZEOLITE; REMOVAL; COPPER; SORPTION; IRON; ADSORBENTS; ADSORPTION; FLOTATION; CATALYSTS;

D O I：

10.1016/j.molstruc.2010.07.007

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report the X-ray photoelectron spectroscopy (XPS) analysis of natural clinoptilolite from a mine in Sonora, Mexico. From these measurements we determined the chemical state and binding energy of the elements in the zeolite framework and of those in the extra framework sites. The analysis was done on natural clinoptilolite and on cation-exchanged clinoptilolites with Na+ and NH4+ ions. Complementary analysis by several experimental techniques was performed to determine the structural, chemical composition and chemical state modifications experimented by clinoptilolite samples processed by the two types of cation exchange. The clinoptilolite samples were studied by X-ray powder diffraction (XRD) and Fourier transform infrared spectroscopy (FTIR) to determine their structural composition, Energy Dispersive Spectroscopy (EDS) to measure the chemical composition and electronic paramagnetic resonance (EPR) spectroscopy to determine the chemical state of iron inside the natural zeolites. (C) 2010 Elsevier B.V. All rights reserved.

引用

页码：149 / 155

页数：7

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