High-Pressure Methane Adsorption on NaX and NaY Zeolites with Different Si/Al Ratios
- 1 December 1994
- journal article
- research article
- Published by SAGE Publications in Adsorption Science & Technology
- Vol. 11 (4) , 209-216
- https://doi.org/10.1177/026361749401100403
Abstract
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 CH4 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.Keywords
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