Metal-organic frameworks (MOFs) have garnered a great deal of interests as the idea storage media for gas storage and separation. Extensive efforts have been taken into design and development of new MOFs to leverage their storage capacity of gases, such as methane and hydrogen for clean energy technology. However, traditional MOFs constructed from copper and zinc with carboxylate are suffering from the poor stability.1Herein, we synthesized a series of isostructural MOF with good stability for methane storage. All the carboxylate acids are synthesized from Suzuki Coupling reactions. The reactions between these carboxylates and ZrCl4 gave rise to a series of isostructural Zr-MOFs.These MOFs have demonstrated to be isostructual to PCN-562 and UiO-683 by Single Crystal and Powder XRD (Figure 1 ).Figure 1.  (a) Colorless crystals for PCN- 56X; (b) Isoreticular structure of PCN-56; (c) Tetrahedral Cage; (d) Octahedral Cage.The introduction of pendant groups on the linkers of the PCN-56X series has demonstrated an enhancement of methane uptake by decreasing the dead volume and increasing the methane adsorption sites. PXRD studies have showned those MOFs maintained its crystallinity after six weeks. In conclusion, we have successfully synthesized a series of Zr-MOFs with enhanced methane working capacity and excellent stability.

Direct synthesis of isostructural zirconium-based metal-organic frameworks as methane sorbents

248th National Meeting (2014)

The official archive and repository for all ACS Meetings & Expositions abstracts and select posters or presentations.