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

Sakizci M.

ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY, cilt.19, sa.6, ss.1083-1091, 2013 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 19 Sayı: 6
  • Basım Tarihi: 2013
  • Doi Numarası: 10.1007/s10450-013-9531-6
  • Dergi Adı: ADSORPTION-JOURNAL OF THE INTERNATIONAL ADSORPTION SOCIETY
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.1083-1091
  • Anahtar Kelimeler: Adsorption, Ethylene, Sepiolite, XRD, TG-DTA, CATALYTIC-ACTIVITY, BOUND WATER, SURFACE, ETHANE, PALYGORSKITE, DEHYDRATION, AGNO3/CLAY, BEHAVIOR, METHANE, GASES
  • Anadolu Üniversitesi Adresli: Evet

Özet

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.