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Counteranion effects on the catalytic activity of copper salts immobilized on the 2,2′-bipyridine-functionalized metal–organic framework MOF-253

Paper ID Volume ID Publish Year Pages File Format Full-Text
54214 47001 2015 5 PDF Available
Title
Counteranion effects on the catalytic activity of copper salts immobilized on the 2,2′-bipyridine-functionalized metal–organic framework MOF-253
Abstract

•Cu2+ salts on MOF-253 show increased selectivity compared to the homogeneous salts.•Catalytic performance of Cu2+ salts on MOF-253 depends strongly on the counteranion.•Cu2+ environment in MOF-253 was studied in detail with EPR.

The charge-neutral, aluminium-based metal–organic framework containing accessible 2,2′-bipyridine (bpy) sites, MOF-253, is a suitable host material for the immobilization of various copper catalysts. The catalytic performance of CuCl2, Cu(NO3)2, Cu(BF4)2 and Cu(CF3SO3)2 before and after coordination to the bpy ligands in MOF-253 was studied in the Meinwald rearrangement of α-pinene oxide to campholenic aldehyde (CA). The coordination environment of Cu2+ in MOF-253 was further studied via EPR spectroscopy. Although the catalytic activity of the copper salts decreased upon heterogenization through coordination with the bpy linker, the selectivity to campholenic aldehyde markedly increased. Furthermore, the catalytic performance of the MOF loaded with copper salts was shown to vary greatly with the choice of charge compensating anion, allowing for improvement of the heterogeneous catalyst.

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Keywords
Metal–organic framework; α-Pinene oxide rearrangement; MOF-253; Copper salt immobilization; Counteranion; EPR
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Counteranion effects on the catalytic activity of copper salts immobilized on the 2,2′-bipyridine-functionalized metal–organic framework MOF-253
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Today - Volume 246, 15 May 2015, Pages 55–59
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
Get Full-Text Now
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Price was $35.95
You save - $31
Price after discount Only $4.95
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Full-text PDF Download
Online Support
Any Questions? feel free to contact us