Tolerance of Flexible MOFs toward Repeated Adsorption Stress

作者：Bon Volodymyr; Kavoosi Negar; Senkovska Irena; Kaskel Stefan^*

来源：ACS Applied Materials & Interfaces, 2015, 7(40): 22292-22300.

DOI：10.1021/acsami.5b05456

• flexible metal-organic frameworks
• InfraSORP
• adsorption stress
• DUT-8(Ni)
• MIL-53(Al)
• ELM-11
• SNU-9

The adsorption/desorption cyclability of four flexible MOFs, namely, MIL-53(Al), ELM-11, DUT-8(Ni), and SNU-9, was studied at 298 K using n-butane as adsorptive. The detailed analysis of thermal response curves, physisorption isotherm data, powder X-ray diffraction patterns, as well as SEM images revealed the highly stable switching performance of MIL-53(Al) and ELM-11 materials during 100 adsorption/desorption cycles. In contrast, for DUT-8(Ni) and SNU-9, the multiple adsorption/desorption stress leads to the reduction of crystallite size, causing changes in the switching behavior in the initial 10 physisorption runs, and a characteristic shift of the "gate-opening" pressure to higher values is observed.

• 出版日期2015-10-14