Influence of acid treatment on structure of clinoptilolite tuff and its adsorption of methane

Alver B. E., SAKIZCI M.

Adsorption, cilt.21, sa.5, ss.391-399, 2015 (SCI-Expanded) identifier identifier

  • Yayın Türü: Makale / Tam Makale
  • Cilt numarası: 21 Sayı: 5
  • Basım Tarihi: 2015
  • Doi Numarası: 10.1007/s10450-015-9679-3
  • Dergi Adı: Adsorption
  • Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Sayfa Sayıları: ss.391-399
  • Anahtar Kelimeler: Adsorption, Clinoptilolite, Methane, TG-DTA, XRD, XRF, CARBON-DIOXIDE, PHYSICOCHEMICAL PROPERTIES, NATURAL CLINOPTILOLITE, AMMONIUM-EXCHANGE, ETHANE, CO2, N-2, CH4, NITROGEN/METHANE, DEALUMINATION
  • Anadolu Üniversitesi Adresli: Evet

Özet

© 2015, Springer Science+Business Media New York.This study presents the results of the methane adsorption properties of clinoptilolite tuff from Bigadic, Turkey and that of acid treated forms at 273 and 293 K up to 100 kPa using volumetric apparatus. In order to assess changes in structural and gas adsorption properties of clinoptilolite, zeolite sample was treated with acid solutions of varying concentrations (0.1, 0.5, 1.0 and 2.0 M) at 70 °C during 3 h. Structural and thermal characterization of natural and acid treated clinoptilolite samples were carried out using a combination of techniques such as X-ray diffraction, X-ray fluorescence, thermogravimetric, differential thermal analysis and nitrogen adsorption methods. At both temperatures, uptake of methane (CH4) increased in the following order: CLN < CLN-H2 < CLN-H1 < CLN-H05 < CLN-H01. CH4 adsorption capacities of the original and acid treated clinoptilolites were found in the range of 0.476–0.910 mmol/g and 0.398–0.691 mmol/g at 273 and 293 K, respectively.