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Cis/trans-but-2-ene adsorption on natural and modified clinoptilolite

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Abstract:

Adsorption of cis-2-butene and trans-2-butene on clinoptilolite-rich tuff and ion-exchanged forms was investigated. Clinoptilolite samples were characterized by X-ray diffraction (XRD), Fourier-transform infrared (FTIR) spectroscopy, chemical analysis and nitrogen adsorption techniques. Adsorption isotherms for cis and trans 2-butene on purified clinoptilolite (Cp) and modified forms (Na-Cp, K-Cp, Ca-Cp and Mg-Cp) were obtained at pressures up to 2.7 atm. and at 25°C. The results show that natural clinoptilolite has a considerable potential for separation of the two hydrocarbons. Mg-Cp samples showed maximal uptake of both cis-2-butene and trans-2-butene.

Keywords: ADSORPTION; CIS-2-BUTENE; CLINOPTILOLITE; TRANS-2-BUTENE

Document Type: Research Article

DOI: http://dx.doi.org/10.1180/claymin.2009.044.3.405

Publication date: September 1, 2009

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minsoc/cm/2009/00000044/00000003/art00010
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