Data concerning adsorption equilibria of carbon dioxide, nitrogen and oxygen over a zeolite molecular sieve 13X for the modelling of carbon dioxide capture from gaseous mixtures by adsorptive processes

Abstract

Experimental adsorption isotherms of carbon dioxide, nitrogen and oxygen at 293, 313 and 333 K over a zeolite molecular sieve 13X Grace are presented. The data were used in the simulations of the hybrid VSA-membrane process for carbon dioxide capture from flue gas as presented in a related article entitled “The performance of a hybrid VSA-membrane process for the capture of CO2 from flue gas” [1]. A representative sample of ZSM 13X Grace (149.7 mg) was prepared using the Microscal Spinning Riffler. Adsorption equilibria were determined by a gravimetric method, which uses a microbalance IGA003, Hiden Isochema Ltd., UK at temperatures of 293, 313 and 333 K. Every adsorption isotherm was started at 0 bar. For CO2 the equilibrium concentration reaches 3.755-4.857 mol kg−1 at the maximum pressure of 1 bar. In the case of N2 and O2 the equilibrium concentration reaches, respectively, 0.721-1.255 mol kg−1 and 0.299-0.531 mol kg−1 at the maximum pressure of 5 bar. Data may be reused in any adsorptive CO2/N2/O2 separation process which uses ZMS 13X as an adsorbent.

Keywords

• adsorption equilibria
• zeolite 13X
• gravimetric method
• vacuum swing adsorption
• CO2 capture