Molybdenum containing surface complex for olefin epoxidation

Qihua Yang; Christophe Copéret; Can Li; Jean Marie Basset

doi:10.1039/b206013b

Molybdenum containing surface complex for olefin epoxidation

Qihua Yang, Christophe Copéret, Can Li^*, Jean Marie Basset

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

28 Scopus citations

Abstract

Silica-supported molybdenum surface complexes were prepared by the reaction between (N≡)Mo(OtBu)₃ and silica via displacement of the tert-butoxy ligands for siloxyls from the silica surface. The structure of the surface molybdenum complexes was well defined by in-situ FT-IR, elemental analysis, ¹H NMR and ¹³C CP/MAS NMR techniques. The surface complexes could undergo alcoholysis reaction with CD₃OD and CH₃OH in the same way as free (N≡)Mo(OtBu)₃ and they show high catalytic activity and selectivity in olefin epoxidation. Initial rates up to 24.9 mmol epoxide (mmol Mo)^-1 min^-1 were achieved in the epoxidation of cyclohexene using TBHP as oxidant.

Original language	English (US)
Pages (from-to)	319-323
Number of pages	5
Journal	New Journal of Chemistry
Volume	27
Issue number	2
DOIs	https://doi.org/10.1039/b206013b
State	Published - Feb 1 2003
Externally published	Yes

ASJC Scopus subject areas

Catalysis
General Chemistry
Materials Chemistry

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title = "Molybdenum containing surface complex for olefin epoxidation",

abstract = "Silica-supported molybdenum surface complexes were prepared by the reaction between (N≡)Mo(OtBu)3 and silica via displacement of the tert-butoxy ligands for siloxyls from the silica surface. The structure of the surface molybdenum complexes was well defined by in-situ FT-IR, elemental analysis, 1H NMR and 13C CP/MAS NMR techniques. The surface complexes could undergo alcoholysis reaction with CD3OD and CH3OH in the same way as free (N≡)Mo(OtBu)3 and they show high catalytic activity and selectivity in olefin epoxidation. Initial rates up to 24.9 mmol epoxide (mmol Mo)-1 min-1 were achieved in the epoxidation of cyclohexene using TBHP as oxidant.",

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T1 - Molybdenum containing surface complex for olefin epoxidation

AU - Yang, Qihua

AU - Copéret, Christophe

AU - Li, Can

AU - Basset, Jean Marie

PY - 2003/2/1

Y1 - 2003/2/1

N2 - Silica-supported molybdenum surface complexes were prepared by the reaction between (N≡)Mo(OtBu)3 and silica via displacement of the tert-butoxy ligands for siloxyls from the silica surface. The structure of the surface molybdenum complexes was well defined by in-situ FT-IR, elemental analysis, 1H NMR and 13C CP/MAS NMR techniques. The surface complexes could undergo alcoholysis reaction with CD3OD and CH3OH in the same way as free (N≡)Mo(OtBu)3 and they show high catalytic activity and selectivity in olefin epoxidation. Initial rates up to 24.9 mmol epoxide (mmol Mo)-1 min-1 were achieved in the epoxidation of cyclohexene using TBHP as oxidant.

AB - Silica-supported molybdenum surface complexes were prepared by the reaction between (N≡)Mo(OtBu)3 and silica via displacement of the tert-butoxy ligands for siloxyls from the silica surface. The structure of the surface molybdenum complexes was well defined by in-situ FT-IR, elemental analysis, 1H NMR and 13C CP/MAS NMR techniques. The surface complexes could undergo alcoholysis reaction with CD3OD and CH3OH in the same way as free (N≡)Mo(OtBu)3 and they show high catalytic activity and selectivity in olefin epoxidation. Initial rates up to 24.9 mmol epoxide (mmol Mo)-1 min-1 were achieved in the epoxidation of cyclohexene using TBHP as oxidant.

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DO - 10.1039/b206013b

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JO - New Journal of Chemistry

JF - New Journal of Chemistry

IS - 2

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Molybdenum containing surface complex for olefin epoxidation

Abstract

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