MgCoAl-LDH derived heterogeneous catalysts for the ethanol transesterification of canola oil to biodiesel

Li, Eugena, Xu, Zhi Ping and Rudolph, Victor (2009) MgCoAl-LDH derived heterogeneous catalysts for the ethanol transesterification of canola oil to biodiesel. Applied Catalysis B: Environmental, 88 1-2: 42-49. doi:10.1016/j.apcatb.2008.09.022


Author Li, Eugena
Xu, Zhi Ping
Rudolph, Victor
Title MgCoAl-LDH derived heterogeneous catalysts for the ethanol transesterification of canola oil to biodiesel
Journal name Applied Catalysis B: Environmental   Check publisher's open access policy
ISSN 0926-3373
1873-3883
Publication date 2009-04-29
Year available 2008
Sub-type Article (original research)
DOI 10.1016/j.apcatb.2008.09.022
Open Access Status Not yet assessed
Volume 88
Issue 1-2
Start page 42
End page 49
Total pages 8
Place of publication Amsterdam, Netherlands
Publisher Elsevier BV
Language eng
Subject 1503 Catalysis
2300 Environmental Science
1508 Process Chemistry and Technology
Abstract Mixed oxide catalysts derived from Mg-Co-Al-La layered double hydroxide (LDH) with various Mg:Co:Al:La ratios were prepared by co-precipitation and calcination. Their catalytic performance as heterogeneous base catalysts for the transesterification of canola oil with ethanol to produce biodiesel was compared over 5 h in a batch reactor at 473 K. Amending the catalyst by the addition of La, a possible stabilizer and catalyst, and an increase in Mg, which provides the main base catalyst sites, did not seem to affect the catalytic activity. Experiments using Mg(2)CoAl catalyst are reported, showing the effects of reaction temperature, ethanol-to-oil molar ratio, particle size, and catalyst stability in the transesterification of canola oil. The catalytic activity of the Mg(2)CoAl was demonstrated and shown to be stable and reusable maintaining its activity after 7 cycles. The kinetics of the transesterification of canola oil catalyzed by Mg(2)CoAl may be modeled as a first-order reaction. (C) 2008 Elsevier B.V. All rights reserved.
Formatted abstract
Mixed oxide catalysts derived from Mg–Co–Al–La layered double hydroxide (LDH) with various Mg:Co:Al:La ratios were prepared by co-precipitation and calcination. Their catalytic performance as heterogeneous base catalysts for the transesterification of canola oil with ethanol to produce biodiesel was compared over 5 h in a batch reactor at 473 K. Amending the catalyst by the addition of La, a possible stabilizer and catalyst, and an increase in Mg, which provides the main base catalyst sites, did not seem to affect the catalytic activity. Experiments using Mg2CoAl catalyst are reported, showing the effects of reaction temperature, ethanol-to-oil molar ratio, particle size, and catalyst stability in the transesterification of canola oil. The catalytic activity of the Mg2CoAl was demonstrated and shown to be stable and reusable maintaining its activity after 7 cycles. The kinetics of the transesterification of canola oil catalyzed by Mg2CoAl may be modeled as a first-order reaction.
Keyword Biodiesel
Heterogeneous catalyst
Layered double hydroxide
Cobalt
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ
Additional Notes Available online 2 October 2008

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Chemical Engineering Publications
Australian Institute for Bioengineering and Nanotechnology Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 96 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 104 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Thu, 03 Sep 2009, 18:11:07 EST by Mr Andrew Martlew on behalf of School of Chemical Engineering