Abstract
The adsorption of ethylene (C2H4) on sepiolite from Eskişehir, 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 N2 adsorption methods. The C2H4 adsorption isotherms of all clay samples were obtained at 20 °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.
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This work was supported by Anadolu University Commission of Scientific Research Project under Grant No. 081029. Special thanks to Matthias Thommes for his helpful suggestions.
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Sakizci, M. Effect of salt modification and acid activation on ethylene adsorption properties of sepiolite. Adsorption 19, 1083–1091 (2013). https://doi.org/10.1007/s10450-013-9531-6
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DOI: https://doi.org/10.1007/s10450-013-9531-6