CO 2 N 2 and CO 2 CH 4 binary adsorption isotherms with H‐ZSM5: The importance of experimental data regression with the concentration pulse method

A novel functional form for describing the binary K p data obtained with concentration pulse chromatography has been developed. The application of the novel function set was evaluated by studying the binary CO 2 ‐CH 4 and CO 2 ‐N 2 systems using H‐ZSM‐5 as the adsorbent with SiO 2 /Al 2 O 3 ratios of 30 and 280. Pure isotherms at 40°C, up to 100 kPa pressure and binary isotherms at 40°C and 100 kPa total pressure have been determined using the concentration pulse method. The results from the use of the novel function set show that a small deviation of the regression curve from the experimental data will result with differences in the binary isotherms.