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Effect of salt modification and acid activation on ethylene adsorption properties of sepiolite

Author:
Sakizci, Meryem  


Journal:
ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY


Issue Date:
2013


Abstract(summary):

The adsorption of ethylene (C2H4) on sepiolite from EskiAYehir, Turkey and on its salt modified forms (NaS, KS, CaS and MgS) and treated with 1, 3 and 5 M HCl solutions (SH, S3H and S5H) was investigated. The sepiolite samples were characterized using X-ray diffraction, X-ray fluorescence, thermogravimety, differential thermal analysis and N-2 adsorption methods. The C2H4 adsorption isotherms of all clay samples were obtained at 20 A degrees C up to 37 kPa. The uptake of C2H4 decreased as HS > CaS > NaS > S > MgS > KS > H3S > H5S for sepiolite samples. Capacity of sepiolites for C2H4 ranged from 0.478 to 0.622 mmol/g. It was found that the adsorbed amount of C2H4 on sepiolite samples decreased with increasing acid concentrations.


Page:
1083---1091


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