Development of Ca/KIT-6 adsorbents for high temperature CO2 capture

Sun, Hongman, Parlett, Christopher M.A., Isaacs, Mark A., Liu, Xiaotong, Adwek, George, Wang, Jianqiao, Shen, Boxiong, Huang, Jun and Wu, Chunfei (2019). Development of Ca/KIT-6 adsorbents for high temperature CO2 capture. Fuel, 235 , pp. 1070-1076.

Abstract

The incorporation of CaO into an inert porous solid support has been identified as an effective approach to improve the stability of adsorbents for CO2 capture. In this work, we focus on enhancing the capacity of carbon capture and cyclic stability of CaO by impregnating CaO particles into a three-dimensional mesoporous silica (KIT-6) support. At a low CaO loading, the three-dimensional mesoporous support was filled with CaO nano-particles. The further increase of CaO loading resulted in the aggregation of CaO particles on the external surface of the support material, as identified by electron microscopy analysis. These CaO/KIT-6 adsorbents show excellent high-temperature CO2 carbonation/calcination stability over multiple cycles of CaO carbonation and calcination. The enhancement of the performance of carbon capture is attributed to the interaction between CaO and the silica skeleton of KIT-6 through the formation of interfacial CaSiO3 and Ca2SiO4 which enhanced the resistance of CaO sintering.

Publication DOI: https://doi.org/10.1016/j.fuel.2018.07.044
Divisions: Engineering & Applied Sciences
Additional Information: © 2018, Elsevier. Licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International http://creativecommons.org/licenses/by-nc-nd/4.0/
Uncontrolled Keywords: Adsorbent,CaO,CO capture,KIT-6,Mesoporous silica,Chemical Engineering(all),Fuel Technology,Energy Engineering and Power Technology,Organic Chemistry
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Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
https://www.sci ... 2432?via%3Dihub (Publisher URL)
Published Online Date: 2019-01-01
Published Date: 2019-01-01
Authors: Sun, Hongman
Parlett, Christopher M.A. ( 0000-0002-3651-7314)
Isaacs, Mark A.
Liu, Xiaotong
Adwek, George
Wang, Jianqiao
Shen, Boxiong
Huang, Jun
Wu, Chunfei

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Version: Accepted Version

Access Restriction: Restricted to Repository staff only until 30 August 2019.

License: Creative Commons Attribution Non-commercial No Derivatives


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