Effect of calcination temperature and MgO crystallite size on MgO/TiO 2 catalyst system for soybean oil transesterification

Liberty L. Mguni; Mbala Mukenga; Kalala Jalama; Reinout Meijboom

doi:10.1016/j.catcom.2013.01.009

Effect of calcination temperature and MgO crystallite size on MgO/TiO ₂ catalyst system for soybean oil transesterification

Liberty L. Mguni, Mbala Mukenga, Kalala Jalama, Reinout Meijboom

Chemical Sciences

University of Johannesburg

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

22 Citations (Scopus)

Abstract

The effect of calcination temperature and MgO crystallite sizes on the structure and catalytic performance of TiO₂ supported nano-MgO catalyst for the transesterification of soybean oil has been studied. The catalyst has been prepared by deposition-precipitation method, characterised by XRD, TEM, XRF, BET and FTIR and tested in a batch autoclave at 225 C. The soybean oil conversion after 15 min of the transesterification reaction increased when the calcination temperature was increased from 500 to 600 C and decreased with further increase in calcination temperature. Some glycerolysis activity was also detected on catalysts calcined at 600 and 700 C after 45 min of reaction. The soybean oil conversion during the transesterification reaction increased with the decrease in MgO crystallite size for the first 30 min.

Original language	English
Pages (from-to)	52-57
Number of pages	6
Journal	Catalysis Communications
Volume	34
DOIs	https://doi.org/10.1016/j.catcom.2013.01.009
Publication status	Published - 5 Apr 2013

Keywords

Calcination temperature
Crystallite size
Keywords
MgO/TiO
Transesterification

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

Access to Document

10.1016/j.catcom.2013.01.009

Cite this

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title = "Effect of calcination temperature and MgO crystallite size on MgO/TiO 2 catalyst system for soybean oil transesterification",

abstract = "The effect of calcination temperature and MgO crystallite sizes on the structure and catalytic performance of TiO2 supported nano-MgO catalyst for the transesterification of soybean oil has been studied. The catalyst has been prepared by deposition-precipitation method, characterised by XRD, TEM, XRF, BET and FTIR and tested in a batch autoclave at 225 C. The soybean oil conversion after 15 min of the transesterification reaction increased when the calcination temperature was increased from 500 to 600 C and decreased with further increase in calcination temperature. Some glycerolysis activity was also detected on catalysts calcined at 600 and 700 C after 45 min of reaction. The soybean oil conversion during the transesterification reaction increased with the decrease in MgO crystallite size for the first 30 min.",

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AU - Mguni, Liberty L.

AU - Mukenga, Mbala

AU - Jalama, Kalala

AU - Meijboom, Reinout

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AB - The effect of calcination temperature and MgO crystallite sizes on the structure and catalytic performance of TiO2 supported nano-MgO catalyst for the transesterification of soybean oil has been studied. The catalyst has been prepared by deposition-precipitation method, characterised by XRD, TEM, XRF, BET and FTIR and tested in a batch autoclave at 225 C. The soybean oil conversion after 15 min of the transesterification reaction increased when the calcination temperature was increased from 500 to 600 C and decreased with further increase in calcination temperature. Some glycerolysis activity was also detected on catalysts calcined at 600 and 700 C after 45 min of reaction. The soybean oil conversion during the transesterification reaction increased with the decrease in MgO crystallite size for the first 30 min.

KW - Calcination temperature

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