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Simulation of heterogeneously Cs-doped heteropolyacid catalyzed transesterification for biodiesel production

Xu, M, Wilson, K and Sadhukhan, J (2008) Simulation of heterogeneously Cs-doped heteropolyacid catalyzed transesterification for biodiesel production In: Reaction Engineering: Analysis, Design and Modeling, 2008-04-06 - 2008-04-10, New Orleans, USA.

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Biodiesel, an alternative diesel fuel, has become more attractive recently because of its environmental benefits and the increase in the petroleum price. Nowadays, most industrial applications of biodiesel production are performed by the transesterification of renewable biological sources based on homogeneous acid catalysts, which requires downstream neutralization and separation leading to a series of technical and environmental problems. However, heterogeneous catalyst could solve these issues, and be used as a better alternative for biodiesel production. Thus, a heuristic diffusion-reaction kinetic model has been established to simulate the transesterification of alkyl ester with methanol over a series of heterogeneous Cs-doped heteropolyacid catalysts. The novelty of this framework lies in detailed modeling of surface reacting kinetic phenomena and integrating that with particle-level transport phenomena all the way through to process design and optimisation. A kinetic model based on a three-step ‘Eley-Rideal' type of mechanism in the liquid phase is used in the simulation of reaction. The effect of diffusion inside a catalyst pellet is taken into account because of the mass transport inside the catalyst particles. This multi-disciplinary research offers better insights into catalyst design and process intensification for the industrial application of Cs-doped heteropolyacid catalysts for biodiesel production. A case study of the transesterification of tributyrin with methanol has been demonstrated to establish the effectiveness of this methodology.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Divisions : Surrey research (other units)
Authors :
Xu, M
Wilson, K
Date : 2008
Depositing User : Symplectic Elements
Date Deposited : 17 May 2017 12:07
Last Modified : 23 Jan 2020 17:37

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