Epoxidation in ionic liquids: A comparison of rhenium(VII) and molybdenum(VI) catalysts

Daniel Betz; Wolfgang A. Herrmann; Fritz E. Kühn

doi:10.1016/j.jorganchem.2009.06.004

Epoxidation in ionic liquids: A comparison of rhenium(VII) and molybdenum(VI) catalysts

Daniel Betz, Wolfgang A. Herrmann, Fritz E. Kühn

Technical University of Munich

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

38 Scopus citations

Abstract

Complexes of the type (dimethyl-bpy)MoO₂Cl₂ and Schiff/Lewis-base complexes of methyltrioxorhenium (MTO), being efficient homogeneous catalysts for the epoxidation of olefins, have been examined with respect to their catalytic performance at 55 and 25 °C in systems employing room temperature ionic liquids (RTILs) of composition [BMIM]NTf₂, [BMIM]PF₆, [BMIM]BF₄ and [C₈MIM]PF₆ as solvents. The performance in the cyclooctene epoxidation was observed to be strongly dependent on the water content of the system and the catalyst solubility in the RTIL. MTO based systems prove to be superior with respect to lower energy consumption, higher stability and higher product yields compared to the investigated Mo(VI) system under the conditions applied.

Original language	English
Pages (from-to)	3320-3324
Number of pages	5
Journal	Journal of Organometallic Chemistry
Volume	694
Issue number	20
DOIs	https://doi.org/10.1016/j.jorganchem.2009.06.004
State	Published - 15 Sep 2009

Keywords

Catalysis
Ionic liquids
Methyltrioxorhenium
Molybdenum
Olefin epoxidation

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.jorganchem.2009.06.004

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title = "Epoxidation in ionic liquids: A comparison of rhenium(VII) and molybdenum(VI) catalysts",

abstract = "Complexes of the type (dimethyl-bpy)MoO2Cl2 and Schiff/Lewis-base complexes of methyltrioxorhenium (MTO), being efficient homogeneous catalysts for the epoxidation of olefins, have been examined with respect to their catalytic performance at 55 and 25 °C in systems employing room temperature ionic liquids (RTILs) of composition [BMIM]NTf2, [BMIM]PF6, [BMIM]BF4 and [C8MIM]PF6 as solvents. The performance in the cyclooctene epoxidation was observed to be strongly dependent on the water content of the system and the catalyst solubility in the RTIL. MTO based systems prove to be superior with respect to lower energy consumption, higher stability and higher product yields compared to the investigated Mo(VI) system under the conditions applied.",

keywords = "Catalysis, Ionic liquids, Methyltrioxorhenium, Molybdenum, Olefin epoxidation",

author = "Daniel Betz and Herrmann, {Wolfgang A.} and K{\"u}hn, {Fritz E.}",

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T2 - A comparison of rhenium(VII) and molybdenum(VI) catalysts

AU - Betz, Daniel

AU - Herrmann, Wolfgang A.

AU - Kühn, Fritz E.

PY - 2009/9/15

Y1 - 2009/9/15

N2 - Complexes of the type (dimethyl-bpy)MoO2Cl2 and Schiff/Lewis-base complexes of methyltrioxorhenium (MTO), being efficient homogeneous catalysts for the epoxidation of olefins, have been examined with respect to their catalytic performance at 55 and 25 °C in systems employing room temperature ionic liquids (RTILs) of composition [BMIM]NTf2, [BMIM]PF6, [BMIM]BF4 and [C8MIM]PF6 as solvents. The performance in the cyclooctene epoxidation was observed to be strongly dependent on the water content of the system and the catalyst solubility in the RTIL. MTO based systems prove to be superior with respect to lower energy consumption, higher stability and higher product yields compared to the investigated Mo(VI) system under the conditions applied.

AB - Complexes of the type (dimethyl-bpy)MoO2Cl2 and Schiff/Lewis-base complexes of methyltrioxorhenium (MTO), being efficient homogeneous catalysts for the epoxidation of olefins, have been examined with respect to their catalytic performance at 55 and 25 °C in systems employing room temperature ionic liquids (RTILs) of composition [BMIM]NTf2, [BMIM]PF6, [BMIM]BF4 and [C8MIM]PF6 as solvents. The performance in the cyclooctene epoxidation was observed to be strongly dependent on the water content of the system and the catalyst solubility in the RTIL. MTO based systems prove to be superior with respect to lower energy consumption, higher stability and higher product yields compared to the investigated Mo(VI) system under the conditions applied.

KW - Catalysis

KW - Ionic liquids

KW - Methyltrioxorhenium

KW - Molybdenum

KW - Olefin epoxidation

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U2 - 10.1016/j.jorganchem.2009.06.004

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M3 - Article

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SN - 0022-328X

VL - 694

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JO - Journal of Organometallic Chemistry

JF - Journal of Organometallic Chemistry

IS - 20

ER -

Epoxidation in ionic liquids: A comparison of rhenium(VII) and molybdenum(VI) catalysts

Abstract

Keywords

UN SDGs

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