Adsorption studies of hydrogen and ethylene on cation-exchanged bentonite

ERDOĞAN ALVER B.

CLAY MINERALS, vol.52, no.1, pp.67-73, 2017 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 52 Issue: 1
  • Publication Date: 2017
  • Doi Number: 10.1180/claymin.2017.052.1.04
  • Journal Name: CLAY MINERALS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.67-73
  • Keywords: adsorption, bentonite, BET, ethylene, hydrogen, XRD, CLAY-MINERALS, MONTMORILLONITE, GASES, ACID, DIFFUSION, PORE, NA
  • Anadolu University Affiliated: No

Abstract

The adsorption of C2H4 and H-2 gases by bentonite from the Unye region, Turkey both as raw (B) and as K+-, Li+-, Ag+- and Mg2+- exchanged forms, was investigated using automated volumetric equipment and pressures up to 100 kPa at 273 K and 77 K, respectively. X-ray powder diffraction (XRD) and specific surface area measurement (BET) methods were employed to characterize the bentonite samples. The C2H4 and H-2 gas adsorption capacities of the original and modified forms were in the ranges 1.817-0.201 mmol g(-1) and 0.522-0.388 mmol g(-1), respectively. The influence of salt modifications on the gas adsorption properties of bentonite is discussed.