alexa The Effect Of Catalyst Preparation For The Competitive Hydrogenation Of An Octanal/octene Mixture Using Cu–SCILL Catalysts | 68820
ISSN: 2169-0022

Journal of Material Sciences & Engineering
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2nd International Conference and Exhibition on Materials Science and Chemistry

Letisha Deeplal and Holger B Friedrich
University of KwaZulu-Natal, South Africa
Posters & Accepted Abstracts: J Material Sci Eng
DOI: 10.4172/2169-0022-C1-074
Abstract
The competitive hydrogenation of octanal in the presence of octene has applications downstream of the hydroformylation process. The octanal should be hydrogenated to the desired product, octanol, while avoiding or inhibiting the hydrogenation of octene. Solid catalysts with an ionic liquid coating (SCILL) are a relatively new field of catalysis, which aims to combine the favorable properties of both homogeneous and heterogeneous catalysis. The heterogeneous catalyst must be fully understood before the ionic liquid is introduced, as does the role of the catalyst preparation for the coated and uncoated catalysts. First, a series of monometallic copper catalysts (15 wt%), were investigated, then this was extended to the effect of the ionic liquids. The catalysts were synthesized via wet impregnation, and characterized to determine surface morphology, metal-ionic liquid and metal-support interaction on the catalyst surface. The feed used consisted of 2 (m/m)%, octene, 10 (m/m)% octanal and 88 (m/m)% octanol. The uncoated N-15Cu catalyst shows the highest activity, which could be a result of a greater metal dispersion and metal-support interaction. Irrespective of octene conversion on the uncoated catalysts, once coated with the ionic liquid, all catalysts give similar conversions due to the site blocking capability of the ionic liquid on the C=C adsorption sites. This could also be a ligand effect whereby the imidazole functionality donates electron density to the metal resulting in greater selectivity toward the C=O bond adsorption in a competitive mixed feed system.
Biography

Letisha Deeplal is currently pursuing her PhD degree from the University of KwaZulu-Natal under the supervision of Professor Holger B Friedrich. Her field of study is within the heterogeneous catalytic hydrogenation using copper based materials and is currently investigating the effect of ionic liquids as organic modifiers to this system. Her interest and experience is based on materials chemistry involving surface science techniques such as temperature programmed experiments, chemisorption and physisorption studies.

Email: [email protected]

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