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Performance of Ba-containing catalysts in the transesterification reaction of rapeseed oil with methanol under flow conditions

Paper ID Volume ID Publish Year Pages File Format Full-Text
50101 46779 2012 5 PDF Available
Title
Performance of Ba-containing catalysts in the transesterification reaction of rapeseed oil with methanol under flow conditions
Abstract

Long-term performance of two barium-containing catalysts in the transesterification was studied in the flow fixed bed reactor during 50–60 h at the temperature of 200 (228) °C, the pressure of 20 (30) atm and the liquid hourly space velocity of 0.8–2 h− 1. The performance of the Ba0.04La1.96O3 catalyst is sustained at very high level during 50 h and then declines sharply. The BaAl12O19 catalyst exhibits lower performance but higher stability. The change of the phase or surface composition of the catalysts monitored by X-ray diffraction or X-ray photoelectron spectroscopy are the cause of the diminution of the performance.

Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slideHighlights► Ba–Al–O, Ba–La–O catalysts synthesized by precipitation and subsequent calcination. ► Catalysts for rapeseed oil transesterification with methanol in flow fixed bed reactor. ► Ba–La–O is highly active but not stable; Ba–Al–O is less active but more stable. ► Deactivation of Ba–La–O is due to change of phase composition. ► Deactivation of Ba–Al–O is due to coke formation and depletion of catalyst with Ba.

Keywords
Biodiesel; Solid base catalysts; XRD; XPS; Rapeseed oil; Transesterification
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Performance of Ba-containing catalysts in the transesterification reaction of rapeseed oil with methanol under flow conditions
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Publisher
Database: Elsevier - ScienceDirect
Journal: Catalysis Communications - Volume 18, 10 February 2012, Pages 156–160
Authors
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Subjects
Physical Sciences and Engineering Chemical Engineering Catalysis
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Price was $35.95
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