Description, Kinetic and Equilibrium Studies of the Adsorption of Carbon Dioxide in Mesoporous Iron Oxide Nanospheres
Mohamed G. El‐Desouky, Adel El Shahat, A.A. El-Bindary, Mohamed A. El‐Bindary, D Lee, Y Jin, N Jung, J Lee, J Lee, Y Jeong, S Jeon, S.-Y Lee, S.-J Park, H.-Y Zhao, Y Cao, Q Lineberry, W.-P Pan, E El-Katori, M Ahmed, A El-Bindary, A Oraby, X Du, Y Cheng, Z Liu, Z Hou, T Wu, R Lei, C Shu, S Zhan, D Chen, X Jiao, S Liu, M Nalbandian, M Zhang, J Sanchez, Y.-H Choa, J Nam, D Cwiertny, N Myung, B Russell, A Migone, M Abunowara, M Bustam, S Sufian, U Eldemerdash, E Ozdemir, J He, Y Shi, S Ahn, J Kang, C.-H Lee, M Mazzotti, R Pini, G Storti, X Du, W Guang, Y Cheng, Z Hou, Z Liu, H Yin, L Huo, R Lei, C Shu, C.-L Huang, P.-Y Wang, Y.-Y Li, N Hassan, A Shahat, A El-Didamony, M El-Desouky, A El-Bindary, F Ke, Y.-P Yuan, L.-G Qiu, Y.-H Shen, A.-J Xie, J.-F Zhu, X.-Y Tian, L.-D Zhang, A Lassoued, M Lassoued, B Dkhil, S Ammar, A Gadri, Synthesis, T Bhagavathi Pushpa, J Vijayaraghavan, S Sardhar Basha, V Sekaran, K Vijayaraghavan, J Jegan, X Du, Y Cheng, Z Liu, H Yin, T Wu, L Huo, C Shu, B Petrovic, M Gorbounov
Abstract
Mesoporous iron oxide nanospheres (MINs) have been successfully synthesized and have proven to be high-efficiency adsorbents. The morphology of the MINs is very uniform in spherical form, with an average particle size of 23-27 nm in the diameter range. MINs content has a fairly high BET surface area of 188.25 m2g−1 and a total volume of 0.14 cm3g−1 pores. Thus, seams were seen as potential CO2 sequestration reservoirs to reduce greenhouse gas emissions. The CO2 adsorption was favorable at low temperature and dry MINs conditions. However, MINs have a high adsorption capacity of 0.15 mmol/g. The CO2 adsorption isotherm of all coal samples according to the IUPAC classification of adsorption isotherms fits category I, which most likely explains adsorption confined to a few layers of molecules (micropores and mesopores). The balancing assessment using Langmuir, Henry, Dubbin, Temkin, Toth, Harkins-Jura, Elovich, Redlich-Peterson, and Josene model provided the best fit for any experimental adsorption data that predict heterogeneous surface properties of MINs.