Synthesis of metal modified Mesoporous Zeolites catalysts: application in conversion of Olefins to Valuable liquid products
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Date
2016
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Publisher
University of the Western Cape
Abstract
The effects of temperature, synthesis duration and silica source were studied to obtain
suitable conditions for our laboratory experiment concerned with the synthesis of MCM-41
catalyst. The transformation of 1-hexene was studied using modified mesoporous MCM-41as
a catalyst. Catalysts were synthesised by co-precipitation and wet impregnation methods
doped with aluminium, chromium and iron. Tetraethylorthosilane (TEOS) was used as silica
source due to its ability to show improved results than sodium silicate sources. Catalysts were
synthesised with single metal doping for the production of Al-MCM-41, Cr-MCM-41 and Fe-
MCM-41. Double doped metal catalysts were also synthesised for the production of Cr/Al-
MCM-41 and Fe/Al-MCM-41. Catalysts were hydrothermally synthesised at 150 ?C for 72 h
then calcined at 560 ?C after drying. XRD, SEM, FTIR spectroscopy, BET surface area
measurents, ammonia-TPD and NMR spectroscopy were used for characterisation of
synthesised materials to understand the structural frame and interior as well as exterior
surface.
Description
Magister Scientiae - MSc (Chemistry)