Open AccessHigh-Pressure Methane Adsorption on NaX and NaY Zeolites with Different Si/Al Ratios
Author(s) -
L. Mentasty,
A. M. Woestyn,
Elena Isabel Basaldella,
A. Kikot,
G. Zgrablich
Publication year - 1994
Publication title -
adsorption science and technology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.682
H-Index - 36
eISSN - 2048-4038
pISSN - 0263-6174
DOI - 10.1177/026361749401100403
Subject(s) - microporous material , chemistry , adsorption , methane , zeolite , molecular sieve , pressure swing adsorption , atmospheric temperature range , chemical engineering , inorganic chemistry , thermodynamics , organic chemistry , catalysis , engineering , physics
One method of increasing the storage capacity of compressed natural gas, an alternative for vehicular fuel, is by adsorbing it on to microporous solids such as zeolites or activated carbons. NaX and NaY zeolites with different Si/Al ratios have been synthesized and characterized. Experimental adsorption isotherms for CH 4 on these zeolites have been obtained at different temperatures over a pressure range of 0–5 MPa using a high-pressure volumetric apparatus. Isosteric heats of adsorption have been estimated and the isotherms analyzed applying a statistical thermodynamic model. The efficiency of this solid as a methane storage system has been evaluated and compared with other sorbents. Encouraging results have been obtained.