TY - JOUR
T1 - A comparison of the H2 sorption capacities of isostructural metal-organic frameworks with and without accessible metal sites
T2 - [{Zn 2(abtc)(dmf)2}3] and [{Cu2(abtc) (dmf)2}3] versus [{Cu2(abtc)}3]
AU - Lee, Yong Gon
AU - Moon, Hoi Ri
AU - Cheon, Young Eun
AU - Suh, Myunghyun Paik
PY - 2008/9/22
Y1 - 2008/9/22
N2 - The isostructural metal-organic frameworks [{Zn2(abtc)(dmf) 2}3] (1a), [{Cu2(abtc)(dmf)2} 3] (2a), and [{Cu2(abtc)}3] (2b; H 4abtc = 1,1′-azobenzene-3,3′,5,5′-tetracarboxylic acid) have high sorption capacities for H2, N2, CO 2, and CH4. Solid 2b, which has accessible metal sites (AMSs), has a higher H2 adsorption capacity than 1a or 2a (see picture; T = 77 K), neither of which have AMSs, because of its lower molecular weight and greater isosteric heat of H2 adsorption.
AB - The isostructural metal-organic frameworks [{Zn2(abtc)(dmf) 2}3] (1a), [{Cu2(abtc)(dmf)2} 3] (2a), and [{Cu2(abtc)}3] (2b; H 4abtc = 1,1′-azobenzene-3,3′,5,5′-tetracarboxylic acid) have high sorption capacities for H2, N2, CO 2, and CH4. Solid 2b, which has accessible metal sites (AMSs), has a higher H2 adsorption capacity than 1a or 2a (see picture; T = 77 K), neither of which have AMSs, because of its lower molecular weight and greater isosteric heat of H2 adsorption.
KW - Adsorption
KW - Carboxylate ligands
KW - Hydrogen
KW - Metal-organic frameworks
KW - Microporous materials
UR - http://www.scopus.com/inward/record.url?scp=54749126111&partnerID=8YFLogxK
U2 - 10.1002/anie.200801488
DO - 10.1002/anie.200801488
M3 - Article
AN - SCOPUS:54749126111
SN - 1433-7851
VL - 47
SP - 7741
EP - 7745
JO - Angewandte Chemie - International Edition
JF - Angewandte Chemie - International Edition
IS - 40
ER -