TY - JOUR
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
UR - http://www.scopus.com/inward/record.url?scp=84926364306&partnerID=8YFLogxK
U2 - 10.1002/chem.201406033
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 -