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Synthesis, Transformation, Catalysis, and Gas Sorption Investigations on the Bismuth Metal-Organic Framework CAU-17
Stockholm University, Faculty of Science, Department of Materials and Environmental Chemistry (MMK). Christian‐Albrechts‐Universität zu Kiel, Germany.ORCID iD: 0000-0001-9118-1342
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Number of Authors: 72018 (English)In: European Journal of Inorganic Chemistry, ISSN 1434-1948, E-ISSN 1099-1948, no 30, p. 3496-3503Article in journal (Refereed) Published
Abstract [en]

Very few microporous bismuth metal-organic frameworks have been discovered to date. Of these, no detailed experimental characterization of the synthesis and properties have been reported until now for the only one which can be prepared from inexpensive starting materials: CAU-17 [Bi(BTC)(H2O)], with H3BTC = trimesic acid. In-situ powder X-ray diffraction during solvothermal synthesis of CAU-17 revealed that it crystallizes rapidly within 2 minutes, and if the reaction is not stopped, the MOF transforms into a nonporous dense purely inorganic material within one hour, revealing that CAU-17 is a crystalline intermediate phase. Synthesis scale-up employing more concentrated reaction mixtures resulted in another Bi trimesate of composition [Bi(HBTC)(NO3)(MeOH)]MeOH, which structurally decomposes upon storage under ambient conditions. Sorption experiments showed that CAU-17 is microporous with a BET surface area of 530 m(2)/g. As a potential greenhouse gas sorbent, CAU-17 showed high SF6/N-2 and CO2/N-2 selectivity > 31 and 29, respectively. Furthermore, the catalytic activity of CAU-17 was studied in the regioselective ring-opening of styrene oxide by methanol to obtain 2-methoxy-2-phenylethanol, thus demonstrating the existence of coordinatively unsaturated sites in the crystal structure of CAU-17.

Place, publisher, year, edition, pages
2018. no 30, p. 3496-3503
Keywords [en]
Bismuth, Metal-organic framework, Porous material, In-situ, PXRD, SF6 sorption, Styrene oxide, Heterogeneous catalysis
National Category
Chemical Sciences
Identifiers
URN: urn:nbn:se:su:diva-160105DOI: 10.1002/ejic.201800321ISI: 000441549200006OAI: oai:DiVA.org:su-160105DiVA, id: diva2:1249491
Available from: 2018-09-19 Created: 2018-09-19 Last updated: 2018-09-19Bibliographically approved

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