Naslov
Mechanochemical synthesis of a microporous MOF-74 metal-organic framework studied by in situ synchrotron X-ray diffraction

Autori
Užarević, Krunoslav ; Julien, Patrick A. ; Ayoub, Ghada ; Friščić, Tomislav

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, ostalo

Izvornik
24th Annual Meeting of the German Crystallographic Society (DGK) | Universität Stuttgart / - , 2016

Skup
24th Annual Meeting of the German Crystallographic Society (DGK) | Universität Stuttgart

Mjesto i datum
Stuttgart, Njemačka, 14.03.2016. - 17.03.2016

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Nije recenziran

Ključne riječi
mechanochemical synthesis; microporous metal-organic materials; MOF-74; in situ methods

Sažetak
Here we report the mechanistic study of mechanochemical synthesis of microporous MOF-74 from ZnO. The MOF-74 frameworks (also known as a CPO-27) are a particularly important family of MOFs made from bivalent metal nodes and 2, 5- dihydroxyterephthalic acid anions. Structures of these MOFs are characterized by honeycomb architecture and free metal sites, with reports showing high catalytic acitivty and potential for gas separation. In situ XRPD studies, performed at the European Synchrotron Radiation Facility (ESRF) and Deutsches Elektronen Synchrotron (DESY) revealed that the mechanosynthesis of Zn- MOF-74 proceeds over two steps, initially yielding a non-porous coordination polymer which reacts with remaining ZnO to yield Zn-MOF-74 whose porosity exceeds previously reported materials. Such unprecedented close-packed open reaction pathway can be ascribed to difference in acidity of hydroxyl and carboxylate functionalities on the ligand, and we believe can lead to completely new MOF materials with unprecedented properties.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA