Encapsulation of Crabtree's Catalyst in Sulfonated MIL-101(Cr): Enhancement of Stability and Selectivity between Competing Reaction Pathways by the MOF Chemical Microenvironment

Alexios Grigoropoulos, Alasdair I. McKay, Alexandros P. Katsoulidis, Robert P. Davies, Anthony Haynes, Lee Brammer, Andrew S. Weller*, Jianliang Xiao, Matthew J. Rosseinsky

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

Abstract

Crabtree's catalyst was encapsulated inside the pores of the sulfonated MIL-101(Cr) metal–organic framework (MOF) by cation exchange. This hybrid catalyst is active for the heterogeneous hydrogenation of non-functionalized alkenes either in solution or in the gas phase. Moreover, encapsulation inside a well-defined hydrophilic microenvironment enhances catalyst stability and selectivity to hydrogenation over isomerization for substrates bearing ligating functionalities. Accordingly, the encapsulated catalyst significantly outperforms its homogeneous counterpart in the hydrogenation of olefinic alcohols in terms of overall conversion and selectivity, with the chemical microenvironment of the MOF host favouring one out of two competing reaction pathways.

Original languageEnglish
Pages (from-to)4532-4537
Number of pages6
JournalAngewandte Chemie - International Edition
Volume57
Issue number17
Early online date22 Mar 2018
DOIs
Publication statusPublished - 16 Apr 2018

Bibliographical note

© 2018 The Authors

Keywords

  • allylic alcohols
  • Crabtree's catalyst
  • encapsulation
  • hydrogenation
  • metal–organic frameworks

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