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Single-site biomimetic amino acid complexes for the benign oxidation of hydrocarbons and alcohols

Single-site biomimetic amino acid complexes for the benign oxidation of hydrocarbons and alcohols
Single-site biomimetic amino acid complexes for the benign oxidation of hydrocarbons and alcohols
Zeolite encapsulated amino acid complexes such as Fe-proline, Fe-histidine and Cu-valine have shown significant promise in the selective oxidation of hydrocarbons such as cyclohexane and benzylic alcohols. This novel encapsulation procedure, which involves building a zeolite (host) around a pre-formed and structurally defined amino acid complex (guest), results in the generation of isolated single-sites for catalytic oxidations. IR and UV–Vis techniques were used for structure determination as well as establishing the integrity of the synthesised complexes. Preliminary results indicate that complexes were formed by coordination to the nitrogen atom of the amino group and the oxygen atom of the carboxylate group to the metal. The hydrophobic/hydrophilic nature of the zeolite, coupled with the high activity of the neat complex, generates highly active and selective single-site heterogeneous catalysts for the production of cyclohexanone, an important precursor to the production of commodity chemicals such as adipic acid and ?-caprolactam.
green chemistry, amino acids, single-site catalysts, biomimetic catalysis, enzyme mimics, selective oxidation
1022-5528
1669-1676
Dzierzak, Joanna
3b71e434-edcf-4a8d-afdb-f0cbd4ab89e0
Lefenfeld, Michael
01494715-6cee-47e2-bf55-18acd8be8f62
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b
Dzierzak, Joanna
3b71e434-edcf-4a8d-afdb-f0cbd4ab89e0
Lefenfeld, Michael
01494715-6cee-47e2-bf55-18acd8be8f62
Raja, Robert
74faf442-38a6-4ac1-84f9-b3c039cb392b

Dzierzak, Joanna, Lefenfeld, Michael and Raja, Robert (2009) Single-site biomimetic amino acid complexes for the benign oxidation of hydrocarbons and alcohols. Topics in Catalysis, 52 (12), 1669-1676. (doi:10.1007/s11244-009-9305-2).

Record type: Article

Abstract

Zeolite encapsulated amino acid complexes such as Fe-proline, Fe-histidine and Cu-valine have shown significant promise in the selective oxidation of hydrocarbons such as cyclohexane and benzylic alcohols. This novel encapsulation procedure, which involves building a zeolite (host) around a pre-formed and structurally defined amino acid complex (guest), results in the generation of isolated single-sites for catalytic oxidations. IR and UV–Vis techniques were used for structure determination as well as establishing the integrity of the synthesised complexes. Preliminary results indicate that complexes were formed by coordination to the nitrogen atom of the amino group and the oxygen atom of the carboxylate group to the metal. The hydrophobic/hydrophilic nature of the zeolite, coupled with the high activity of the neat complex, generates highly active and selective single-site heterogeneous catalysts for the production of cyclohexanone, an important precursor to the production of commodity chemicals such as adipic acid and ?-caprolactam.

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More information

Published date: November 2009
Keywords: green chemistry, amino acids, single-site catalysts, biomimetic catalysis, enzyme mimics, selective oxidation

Identifiers

Local EPrints ID: 148285
URI: http://eprints.soton.ac.uk/id/eprint/148285
ISSN: 1022-5528
PURE UUID: c5055105-bda4-4924-a91c-95c39e558695
ORCID for Robert Raja: ORCID iD orcid.org/0000-0002-4161-7053

Catalogue record

Date deposited: 28 Apr 2010 08:20
Last modified: 20 Jul 2019 00:54

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Contributors

Author: Joanna Dzierzak
Author: Michael Lefenfeld
Author: Robert Raja ORCID iD

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