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Evaluation of the activity and stability of alkali-doped metal oxide catalysts for application to an intensified method of biodiesel production

Lookup NU author(s): Claire Macleod, Professor Adam Harvey


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A series of alkali-doped metal oxide catalysts were prepared and evaluated for activity in the transesterification of rapeseed oil to biodiesel. Of those evaluated, LiNO3/CaO, NaNO3/CaO, KNO3/CaO and LiNO3/MgO exhibited > 90% conversion in a standard 3 h test. There was a clear correlation between base strength and activity. These catalysts appeared to be promising candidates to replace conventional homogeneous catalysts for biodiesel production as the reaction times are low enough to be practical in continuous processes and the preparations are neither prohibitively difficult nor costly. However, metal leaching from the catalyst was detected, and this resulted in some homogeneous activity. This would have to be resolved before these catalysts would be viable for large-scale biodiesel production facilities. (c) 2007 Elsevier B.V. All rights reserved.

Publication metadata

Author(s): MacLeod CS, Harvey AP, Lee AF, Wilson K

Publication type: Conference Proceedings (inc. Abstract)

Publication status: Published

Conference Name: Process Intensification and Innovation Process (PI)2 Conference II—Cleaner, Sustainable, Efficient Technologies for the Future

Year of Conference: 2008

Pages: 63-70

ISSN: 1385-8947

Publisher: Elsevier BV


DOI: 10.1016/j.cej.2007.04.014

Library holdings: Search Newcastle University Library for this item

Series Title: Chemical Engineering Journal

ISBN: 18733212