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Synthesis of [Mg2(DOBDC)(DMF)2]@polystyrene composite and its carbon dioxide adsorption

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Title
Synthesis of [Mg2(DOBDC)(DMF)2]@polystyrene composite and its carbon dioxide adsorption
Author(s)
Moon H.-S.; Moon J.-H.; Chun D.H.; Park Y.C.; Yun Y.N.; Sohail M.; Kangkyun Baek; Kim H.
Publication Date
2016-09
Journal
MICROPOROUS AND MESOPOROUS MATERIALS, v.232, no., pp.161 - 166
Publisher
ELSEVIER SCIENCE BV
Abstract
[Mg2(DOBDC)] (Mg-MOF-74 or CPO-27-Mg) with open metal sites showed an exceptionally high CO2 uptake at low partial pressure and room temperature. The single-crystal structure of [Mg2(DOBDC)], however, has not been reported so far. In this work, we synthesized the crystalline product of [Mg2(DOBDC)(DMF)2] (1) and determined its single-crystal structure by synchrotron X-ray diffraction analysis. To improve the chemical stability and fabrication of the adsorbent, the composite of 1 and polystyrene (PS) was prepared by a simply solution-mixing method. Powder X-ray diffraction pattern of 1@PS revealed that the crystallinity of 1 is intact after incorporating PS. TGA of the composite revealed that 2.2 wt% of PS are incorporated to 1. CO2 sorption isotherms of activated 1@PS were measured in the temperature range between 283 and 303 K. The enthalpy of CO2 adsorption for activated 1@PS estimated by the virial equation at zero coverage is 43.9 kJmol-1, which is comparable to the reported value (47 kJmol-1) of activated 1. Interestingly, this composite showed high moisture stability after 90% humidity exposure for 1 day. © 2016 Elsevier Inc
URI
https://pr.ibs.re.kr/handle/8788114/2714
ISSN
1387-1811
Appears in Collections:
Center for Self-assembly and Complexity(복잡계 자기조립 연구단) > Journal Papers (저널논문)
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