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Selective Adsorption of CH4/N2 on Ni-based MOF/SBA-15 Composite Materials

Authors
  • Liu, Hong
  • Ding, Wei
  • Lei, Shaohua
  • Tian, Xupei
  • Zhou, Fubao
Publication Date
Jan 25, 2019
Source
MDPI
Keywords
Language
English
License
Green
External links

Abstract

desorption. The methane (CH4) or N2 high-pressure adsorption isotherms of the samples were measured and compared. The specific surface area and adsorption capacity of the composite materials were generally higher than the pristine MOFs, but were much lower than the synthesized SBA-15. The selectivity of the samples toward a binary gas mixture was determined from the Langmuir adsorption equation. The results revealed that, of all the samples, the MOF-2/SBA-15 sample had the best CH4/N2 adsorption selectivity, with an adsorption selection parameter (S) of 11.1. However, the adsorption of MOF-2/SBA-15 was less than that of spherical SBA-15, due to partial plugging of the pores during the synthesis process. Further research is essential for improving the performance of spherical SBA-15-based MOF materials and (in turn) the enrichment of CH4 from the CH4/N2 mixture.

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