Abstract
Abstract An optimized procedure was designed for the preparation of the microporous metal–organic framework (MOF) [Cu 3 (btc) 2 ] (BTC=benzene‐1,3,5‐tricarboxylate). The crystalline material was characterized by X‐ray diffraction, optical microscopy, SEM, X‐ray photoelectron spectroscopy, N 2 sorption, thermogravimetry, and IR spectroscopy of adsorbed CO. CO adsorbs on a small number of Cu 2 O impurities, and particularly on the free Cu II coordination sites in the framework. [Cu 3 (btc) 2 ] is a highly selective Lewis acid catalyst for the isomerization of terpene derivatives, such as the rearrangement of α‐pinene oxide to campholenic aldehyde and the cyclization of citronellal to isopulegol. By using the ethylene ketal of 2‐bromopropiophenone as a test substrate, it was demonstrated that the active sites in [Cu 3 (btc) 2 ] are hard Lewis acids. Catalyst stability, re‐usability, and heterogeneity are critically assessed.
Keywords
Metal-organic frameworkCatalysisLewis acids and basesChemistryBenzeneMicroporous materialHeterogeneous catalysisInorganic chemistryAdsorptionOrganic chemistry
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Publication Info
- Year
- 2006
- Type
- article
- Volume
- 12
- Issue
- 28
- Pages
- 7353-7363
- Citations
- 678
- Access
- Closed
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Cite This
Luc Alaerts,
Etienne Séguin,
Hilde Poelman
et al.
(2006).
Probing the Lewis Acidity and Catalytic Activity of the Metal–Organic Framework [Cu<sub>3</sub>(btc)<sub>2</sub>] (BTC=Benzene‐1,3,5‐tricarboxylate).
Chemistry - A European Journal
, 12
(28)
, 7353-7363.
https://doi.org/10.1002/chem.200600220
Identifiers
- DOI
- 10.1002/chem.200600220