A theoretical study on the selective adsorption behavior of dimethyl ether and carbon monoxide on H-FER zeolites

The adsorption behavior of dimethyl ether (DME) and carbon dioxide (CO) on FER zeolite with different Si/AI ratios and Al positions was calculated. For pure CO or DME gas, the CO adsorption quantity rises near linearly with pressure, while the DME adsorption quantity firstly rises rapidly but then rises much moderately at higher pressure. For the CO-DME gas mixture, both CO and DME adsorption quantity rises rapidly but then rises much moderately at higher pressure. Further investigation reveals that CO and DME molecules are preferentially located in the 6-MR zone of the 8-MR channel. (C) 2017 Elsevier B.V. All rights reserved.