Recognition of 1, 3‐Butadiene by a Porous Coordination Polymer. Issue 44 (4th October 2016)

• Record Type: Journal Article
• Authors: Kishida, Keisuke; Okumura, Yoshikuni; Watanabe, Yoshihiro; Mukoyoshi, Megumi; Bracco, Silvia; Comotti, Angiolina; Sozzani, Piero; Horike, Satoshi; Kitagawa, Susumu
• Is Part Of: Angewandte Chemie international edition. Volume 55:Issue 44(2016)
• Page Start: 13784
• Page End: 13788
• Publication Date: 2016-10-04
• Subjects: gas separation -- host–guest systems -- microporous materials -- molecular recognition -- coordination polymers; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201607676
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The separation of 1, 3‐butadiene from C4 hydrocarbon mixtures is imperative for the production of synthetic rubbers, and there is a need for a more economical separation method, such as a pressure swing adsorption process. With regard to adsorbents that enable C4 gas separation, [Zn(NO2 ip)(dpe)] n (SD‐65; NO2 ip=5‐nitroisophthalate, dpe=1, 2‐di(4‐pyridyl)ethylene) is a promising porous material because of its structural flexibility and restricted voids, which provide unique guest‐responsive accommodation. The 1, 3‐butadiene‐selective sorption profile of SD‐65 was elucidated by adsorption isotherms, in situ PXRD, and SSNMR studies and was further investigated by multigas separation and adsorption–desorption‐cycle experiments for its application to separation technology. Abstract : A selective gas guzzler : A hydrophobic and flexible triply interpenetrated porous coordination polymer (PCP) recognized 1, 3‐butadiene gas among six other C4 gases under ambient conditions (see picture). Specific C−H–π interactions in the restricted voids is the key to the accommodation of 1, 3‐butadiene, as determined by solid‐state NMR spectroscopy.