Journal of Chemical and Pharmaceutical Research (ISSN : 0975-7384)

Reach Us reach to JOCPR whatsapp-JOCPR +44 1625708989
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission System of respective journal.

Original Articles: 2017 Vol: 9 Issue: 4

Selective Adsorptive Separation of Carbon Dioxide and Methane on a Tetraethylenepentamine-Impregnated Solid Sorbent


To achieve selective CO2 adsorption, the ordered mesoporous material Na-MCM-41 was synthesized by a hydrothermal method and subsequently modified with different amounts of tetra ethylene pentamine (TEPA) through wet impregnation. The as-synthesized adsorbents were characterized by Fourier transform infrared spectroscopy, X-ray diffraction, BET analysis, energy-dispersive X-ray spectroscopy, and transmission electron microscopy. The effects of amine loading and adsorption temperature on the performance of the adsorbents for selective CO2 adsorption were evaluated using a breakthrough method with a fixed-bed reactor equipped with an online multicomponent gas analyzer. The CO2 adsorption capacity of Na-MCM-41 with 55 wt.% TEPA loading (Na-MCM-41(0.55)) was as high as 3.178 mmol/g under the conditions of 10% (v/v) CO2 in CH4 at 70°C, with a maximum separation coefficient of 3.9198. Moreover, cyclic CO2 adsorption–desorption tests demonstrated the excellent regenerability and stability of Na-MCM-41(0.55), which exhibited a decrease in adsorption capacity of only 5.76% over 10 cycles.

rtp slot demo