Effect of Support on Metathesis of n-Decane: Drastic Improvement in Alkane Metathesis with WMe5 Linked to Silica-Alumina

Manoja Samantaray; Raju Dey; Edy Abou-Hamad; Ali Imad Ali Hamieh; Jean-Marie Basset

doi:10.1002/chem.201406033

Effect of Support on Metathesis of n-Decane: Drastic Improvement in Alkane Metathesis with WMe5 Linked to Silica-Alumina

Manoja Samantaray, Raju Dey, Edy Abou-Hamad, Ali Imad Ali Hamieh, Jean-Marie Basset

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

28 Scopus citations

Abstract

[WMe6] (1) supported on the surface of SiO2-Al2O3(500) (2) has been extensively characterized by solid-state NMR spectroscopy, elemental analysis, and gas quantification, which clearly reveal the formation of a mixture of monopodal and bipodal species with the migration of methyl from W to Al. The supported species SiO2-Al2O3(500) (2) transformed at 120°C into two types of carbynic centers, one of which is cationic and the other neutral. These species are very efficient for the metathesis of n-decane. Comparison with already-synthesized neutral bipodal tungsten indicates that the high increase in activity is due to the cationic character of the grafted tungsten.

Original language	English (US)
Pages (from-to)	6100-6106
Number of pages	7
Journal	Chemistry - A European Journal
Volume	21
Issue number	16
DOIs	https://doi.org/10.1002/chem.201406033
State	Published - Mar 11 2015

Bibliographical note

KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors acknowledge the KAUST Nuclear Magnetic Resonance Core Lab and technical assistance from Dr. Kazuo Yamauchi. The authors also thank Professor Lyndon Emsley, Dr. Emmanuel Callens, and Dr. Nassima Riache for fruitful discussions. This work was supported by funds from King Abdullah University of Science and Technology.

ASJC Scopus subject areas

General Chemistry

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title = "Effect of Support on Metathesis of n-Decane: Drastic Improvement in Alkane Metathesis with WMe5 Linked to Silica-Alumina",

abstract = "[WMe6] (1) supported on the surface of SiO2-Al2O3(500) (2) has been extensively characterized by solid-state NMR spectroscopy, elemental analysis, and gas quantification, which clearly reveal the formation of a mixture of monopodal and bipodal species with the migration of methyl from W to Al. The supported species SiO2-Al2O3(500) (2) transformed at 120°C into two types of carbynic centers, one of which is cationic and the other neutral. These species are very efficient for the metathesis of n-decane. Comparison with already-synthesized neutral bipodal tungsten indicates that the high increase in activity is due to the cationic character of the grafted tungsten.",

author = "Manoja Samantaray and Raju Dey and Edy Abou-Hamad and Hamieh, {Ali Imad Ali} and Jean-Marie Basset",

note = "KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors acknowledge the KAUST Nuclear Magnetic Resonance Core Lab and technical assistance from Dr. Kazuo Yamauchi. The authors also thank Professor Lyndon Emsley, Dr. Emmanuel Callens, and Dr. Nassima Riache for fruitful discussions. This work was supported by funds from King Abdullah University of Science and Technology.",

year = "2015",

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doi = "10.1002/chem.201406033",

language = "English (US)",

volume = "21",

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journal = "Chemistry - A European Journal",

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T1 - Effect of Support on Metathesis of n-Decane: Drastic Improvement in Alkane Metathesis with WMe5 Linked to Silica-Alumina

AU - Samantaray, Manoja

AU - Dey, Raju

AU - Abou-Hamad, Edy

AU - Hamieh, Ali Imad Ali

AU - Basset, Jean-Marie

N1 - KAUST Repository Item: Exported on 2020-10-01 Acknowledgements: The authors acknowledge the KAUST Nuclear Magnetic Resonance Core Lab and technical assistance from Dr. Kazuo Yamauchi. The authors also thank Professor Lyndon Emsley, Dr. Emmanuel Callens, and Dr. Nassima Riache for fruitful discussions. This work was supported by funds from King Abdullah University of Science and Technology.

PY - 2015/3/11

Y1 - 2015/3/11

N2 - [WMe6] (1) supported on the surface of SiO2-Al2O3(500) (2) has been extensively characterized by solid-state NMR spectroscopy, elemental analysis, and gas quantification, which clearly reveal the formation of a mixture of monopodal and bipodal species with the migration of methyl from W to Al. The supported species SiO2-Al2O3(500) (2) transformed at 120°C into two types of carbynic centers, one of which is cationic and the other neutral. These species are very efficient for the metathesis of n-decane. Comparison with already-synthesized neutral bipodal tungsten indicates that the high increase in activity is due to the cationic character of the grafted tungsten.

AB - [WMe6] (1) supported on the surface of SiO2-Al2O3(500) (2) has been extensively characterized by solid-state NMR spectroscopy, elemental analysis, and gas quantification, which clearly reveal the formation of a mixture of monopodal and bipodal species with the migration of methyl from W to Al. The supported species SiO2-Al2O3(500) (2) transformed at 120°C into two types of carbynic centers, one of which is cationic and the other neutral. These species are very efficient for the metathesis of n-decane. Comparison with already-synthesized neutral bipodal tungsten indicates that the high increase in activity is due to the cationic character of the grafted tungsten.

UR - http://hdl.handle.net/10754/564103

UR - http://doi.wiley.com/10.1002/chem.201406033

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DO - 10.1002/chem.201406033

M3 - Article

C2 - 25760771

SN - 0947-6539

VL - 21

SP - 6100

EP - 6106

JO - Chemistry - A European Journal

JF - Chemistry - A European Journal

IS - 16

ER -

Effect of Support on Metathesis of n-Decane: Drastic Improvement in Alkane Metathesis with WMe5 Linked to Silica-Alumina

Abstract

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