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A catalytically active porous coordination polymer based on a dinuclear rhodium paddle-wheel unit

Two new coordination polymers, DUT-82 and DUT-83 (DUT – Dresden University of Technology), were synthesized by a solvothermal reaction in methanol of rhodium(II) acetate and the tricarboxylic acid H₃btc (btc – benzene-1,3,5-tricarboxylate) or H₃btb (btb – benzene-1,3,5-tribenzoate), respectively. After drying using supercritical carbon dioxide, aerogels with specific surface areas of up to 1150 m² gˉ¹ and pore volumes of up to 2.26 cm³ gˉ¹ were obtained. Although there is no long range order in the materials, the presence of rhodium paddle-wheel units and thus a local order was proven by X-ray absorption spectroscopy measurements. DUT-82 shows good performance in the adsorption of hydrogen and a high affinity for carbon monoxide, which is rarely observed for metal–organic frameworks. Catalytic investigations demonstrate the activity of DUT-82 in the heterogeneous hydrogenation of styrene as a model system. DUT-82 can be recycled for at least ten cycles underlining the stability during the course of reaction.

Identiferoai:union.ndltd.org:DRESDEN/oai:qucosa:de:qucosa:36155
Date02 December 2019
CreatorsNickerl, Georg, Stoeck, Ulrich, Burkhardt, Ulrich, Senkovska, Irena, Kaskel, Stefan
PublisherRoyal Society of Chemistry
Source SetsHochschulschriftenserver (HSSS) der SLUB Dresden
LanguageEnglish
Detected LanguageEnglish
Typeinfo:eu-repo/semantics/publishedVersion, doc-type:article, info:eu-repo/semantics/article, doc-type:Text
Rightsinfo:eu-repo/semantics/openAccess
Relation2050-7496, 10.1039/c3ta12795h, info:eu-repo/grantAgreement/Deutsche Forschungsgemeinschaft/Porous Metal– Organic Frameworks/43332165//Poröse metallorganische Gerüstverbindungen/SPP 1362

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