Hydrogenation of edible oil over zeolite prepared from local kaolin

Zeolite type A was prepared from Egyptian kaolin by hydrothermal treatment with alkali solution. Several samples of nickel ion exchanged zeolite were prepared ranging from 0.7 to 2.3 wt%. Hydrogenation of sunflower oil has been carried out over Ni-exchanged LTA type zeolite. The Ni-exchanged zeolite...

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Bibliographic Details
Published in:Microporous and mesoporous materials 2004-09, Vol.74 (1), p.79-85
Main Authors: Selim, M.M., Abd El-Maksoud, Islam Hamdy
Format: Article
Language:English
Subjects:
Chemistry
Edible oil
Egyptian kaolin
Exact sciences and technology
General and physical chemistry
Hydrogenation
Ion exchange process
Ion-exchange
Ni zeolite
Raman
Surface physical chemistry
TEM
XRD
Zeolites: preparations and properties
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Summary:Zeolite type A was prepared from Egyptian kaolin by hydrothermal treatment with alkali solution. Several samples of nickel ion exchanged zeolite were prepared ranging from 0.7 to 2.3 wt%. Hydrogenation of sunflower oil has been carried out over Ni-exchanged LTA type zeolite. The Ni-exchanged zeolite showed high promising catalytic activity, 1.36 times that of the commercial Ni/SiO 2 catalyst. Characterization of zeolites was carried by XRD analysis which showed that the crystallinity of zeolite remained without change during the ion exchange process. TEM images taken of samples after hydrogenation showed that Ni is subjected to reduction during the reaction. Raman spectroscopy was used to monitor the hydrogenation process as an alternative method for determining the unsaturation of the hydrogenated oil over the high cost and time consuming nature of the traditional chemical method.
ISSN:1387-1811
1873-3093
DOI:10.1016/j.micromeso.2004.06.011