Chem Soc Rev
Cite this: Chem. Soc. Rev., 2012, 41, 2308–2322 www.rsc.org/csr
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Progress in adsorption-based CO2 capture by metal–organic frameworks Jian Liu, Praveen K. Thallapally,* B. Peter McGrail, Daryl R. Brown and Jun Liu Downloaded by National University of Singapore on 29 February 2012 Published on 05 December 2011 on http://pubs.rsc.org | doi:10.1039/C1CS15221A
Received 17th August 2011 DOI: 10.1039/c1cs15221a Metal–organic frameworks (MOFs) have recently attracted intense research interest because of their permanent porous structures, large surface areas, and potential applications as novel adsorbents. The recent progress in adsorption-based CO2 capture by MOFs is reviewed and summarized in this critical review. CO2 adsorption in MOFs has been divided into two sections, adsorption at high pressures and selective adsorption at approximate atmospheric pressures. Keys to CO2 adsorption in MOFs at high pressures and low pressures are summarized to be pore volumes of MOFs, and heats of adsorption, respectively. Many MOFs have high CO2 selectivities over N2 and CH4. Water eﬀects on CO2 adsorption in MOFs are presented and compared with benchmark zeolites. In addition, strategies appeared in the literature to enhance CO2 adsorption capacities and/or selectivities in MOFs have been summarized into three main categories, catenation and interpenetration, chemical bonding enhancement, and electrostatic force involvement. Besides the advantages, two main challenges of using MOFs in CO2 capture, the cost of synthesis and the stability toward water vapor, have been analyzed and possible solutions and path forward have been proposed to address the two challenges as well (150 references).
Energy and Environment Directorate, Paciﬁc Northwest National Laboratory, Richland, WA 99352, USA. E-mail: Praveen.Thallapally@pnnl.gov; Fax: +1-509-371-7249; Tel: +1-509-371-7183
The global climate change phenomenon, which is caused mainly by the discharge of CO2 into the atmosphere, has
Jian Liu is currently a Postdoctoral Research Associate at the Paciﬁc Northwest National Laboratory (PNNL), USA. His research interests include carbon dioxide capture, metal–organic frameworks (MOFs) synthesis and applications, gas adsorption fundamental and applications, and materials chemistry. Jian received his Bachelor of Engineering degree from Beijing Institute of Technology in 2003 and then in 2006 he Jian Liu obtained a Master of Engineering degree from Chinese Academy of Sciences. He earned his PhD in Chemical Engineering from the Vanderbilt University in May 2011. Before joining PNNL, Jian was working with Professor M. Douglas LeVan at the Vanderbilt University on adsorption equilibrium and mass transfer in MOF adsorbents. Jian has won the 2011 AlChE Separation Division Graduate Student Research Award in Adsorption and Ion Exchange. Dr Liu has published over 15 peer reviewed papers and presented several talks in four consecutive AlChE Annual Conference. He is also a member of the AIChE and the Sigma Xi Society. 2308 Chem. Soc. Rev., 2012, 41, 2308–2322
Praveen K. Thallapally obtained his PhD in 2003 from the University of Hyderabad working with Prof. Gautam R. Desiraju on crystal engineering and polymorphism. After graduation he moved to the Prof. Jerry L. Atwood research group at the University of Missouri-Columbia (UMC) as a postdoctoral research associate where he investigated gas storage and separation using porous organic and metal coordinaPraveen K. Thallapally tion solids. In 2006 he moved to Paciﬁc Northwest National Laboratory (PNNL) as a Sr. Research Scientist. His research interests include the fundamental understanding of nucleation and crystal growth of nanostructured materials, gas separation, adsorption cooling, separation and immobilisation of radio nuclides (Kr, I2), and development of...