Naslov
Manometric real-time studies of the mechanochemical synthesis of zeolitic imidazolate frameworks

Autori
Brekalo, Ivana ; Yuan, Wenbing ; Mottillo, Cristina ; Lu, Yuneng ; Zhang, Yuancheng ; Casaban, Jose ; Holman, K. Travis ; James, Stuart L. ; Duarte, Frédéric ; Williams, P. Andrew ; Harris, Kenneth D. M. ; Friščić, Tomislav

Izvornik
Chemical Science (2041-6520) 11 (2020), 8; 2141-2147

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
mechanochemistry ; in situ monitoring ; zeolitic imidazolate frameworks

Sažetak
We demonstrate a simple method for real-time monitoring of mechanochemical synthesis of metal– organic frameworks, by measuring changes in pressure of gas produced in the reaction. Using this manometric method to monitor the mechanosynthesis of the zeolitic imidazolate framework ZIF-8 from basic zinc carbonate reveals an intriguing feedback mechanism in which the initially formed ZIF-8 reacts with the CO2 byproduct to produce a complex metal carbonate phase, the structure of which is determined directly from powder X-ray diffraction data. We also show that the formation of the carbonate phase may be prevented by addition of excess ligand. The excess ligand can subsequently be removed by sublimation, and reused. This enables not only the synthesis but also the purification, as well as the activation of the MOF to be performed entirely without solvent.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA