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Type: Journal article
Title: Synthesis and characterization of three amino-functionalized metal-organic frameworks based on the 2-aminoterephthalic ligand
Author: Yang, Y.
Lin, R.
Ge, L.
Hou, L.
Bernhardt, P.
Rufford, T.
Wang, S.
Rudolph, V.
Wang, Y.
Zhu, Z.
Citation: Dalton Transactions, 2015; 44(17):8190-8197
Publisher: Royal Society of Chemistry
Issue Date: 2015
ISSN: 1477-9226
Statement of
Ying Yang, Rijia Lin, Lei Ge, Lei Hou, Paul Bernhardt, Thomas E. Rufford, Shaobin Wang, Victor Rudolph, Yaoyu Wang and Zhonghua Zhu
Abstract: The incorporation of Lewis base sites and open metal cation sites into metal-organic frameworks (MOFs) is a potential route to improve selective CO₂ adsorption from gas mixtures. In this study, three novel amino-functionalized metal–organic frameworks (MOFs): Mg-ABDC [Mg₃(ABDC)₃(DMF)₄], Co-ABDC [Co₃(ABDC)₃(DMF)₄] and Sr-ABDC [Sr(ABDC)(DMF)] (ABDC = 2-aminoterephthalate) were synthesized by solvothermal reactions of 2-aminoterephthalic acid (H2ABDC) with magnesium, cobalt and strontium metal centers, respectively. Single-crystal structure analysis showed that Mg-ABDC and Co-ABDC were isostructural compounds comprising two-dimensional layered structures. The Sr-ABDC contained a three-dimensional motif isostructural to its known Ca analogue. The amino-functionalized MOFs were characterized by powder X-ray diffraction, thermal gravimetric analysis and N₂ sorption. The CO₂ and N₂ equilibrium adsorption capacities were measured at different temperatures (0 and 25 °C). The CO₂/N₂ selectivities of the MOFs were 396 on Mg-ABDC, 326 on Co-ABDC and 18 on Sr-ABDC. Both Mg-ABDC and Co-ABDC exhibit high heat of CO₂ adsorption (>30 kJ mol⁻¹). The Sr-ABDC displays good thermal stability but had a low adsorption capacity resulting from narrow pore apertures.
Description: Published on 26 March 2015
Rights: This journal is © The Royal Society of Chemistry 2015
RMID: 0030096619
DOI: 10.1039/c4dt03927k
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Appears in Collections:Chemical Engineering publications

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