Metal organic frameworks, their synthesis and use
AssigneeExxonMobil Research and Engineering Company
InventorsJoseph M. Falkowski, Mary S. Abdulkarim, Mobae Afeworki, Randall J. Meyer, Simon C. Weston
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Abstract
A novel metal organic framework, EMM-39, is described having the structure of UiO-66 and comprising bisphosphonate linking ligands. EMM-39 has acid activity and is useful as a catalyst in olefin isomerization. Also disclosed is a process of making metal organic frameworks, such as EMM-39, by heterogeneous ligand exchange, in which linking ligands having a first bonding functionality in a host metal organic framework are exchanged with linking ligands having a second different bonding functionality in the framework.
Claims35
A metal organic framework having the structure of UiO-66 and comprising phenylene bisphosphonic acid linking ligands.
A metal organic framework comprising octahedral nodes of at least 6 zirconium atoms and at least 6 oxygen atoms partially or fully interconnected by phenylene bisphosphonic linking ligands.
A process for exchanging an organic linking ligand in a metal organic framework, the process comprising:
- (a) providing a first metal organic framework comprising a three-dimensional microporous crystal framework structure comprising metal-containing secondary building units connected by first organic linking ligands comprising a benzene dicarboxylate having a first bonding functionality with the secondary building units,
- (b) providing a liquid medium containing an organic compound capable of reacting with the secondary building units to produce second organic linking ligands having a second bonding functionality with the secondary building units different from the first bonding functionality;
- and
- (c) contacting the first metal organic framework with the liquid medium under conditions effective for the organic compound to react with the secondary building units in the first metal organic framework and exchange at least some of the first organic linking ligands with second organic linking ligands and produce a second metal organic framework
An organic compound comprising a perfluorinated aromatic ring bearing two phosphonate groups.
Dependencies are inferred from the claim text.