Preparation of Biodiesel Catalyzed by Solid Super Base of Calcium Oxide and Its Refining Process

doi:10.1016/S1872-2067(06)60024-7

Chinese Journal of Catalysis

Volume 27, Issue 5, May 2006, Pages 391-396

https://doi.org/10.1016/S1872-2067(06)60024-7 Get rights and content

Abstract

Biodiesel produced by the transesterification of vegetable oils is promising alternative fuel to diesel because of the limited resources of fossil fuel and environmental concerns. An environmentally benign process was developed for the production of biodiesel from jatropha curcas oil using a heterogeneous solid super base catalyst, calcium oxide. The results showed that the base strength of calcium oxide was more than 26.5 after dipping in an ammonium carbonate solution followed by calcination. A study for optimizing the reaction conditions for the transesterification of jatropha curcas oil was performed. Under the optimum conditions of catalyst calcination temperature of 900°C, reaction temperature of 70°C, reaction time of 2.5 h, catalyst dosage of 1.5%, and methanol/oil molar ratio of 9:1, the oil conversion was 93%. The purification of the as-synthesized biodiesel with decalcifying agents to eliminate the remaining calcium was investigated. Citric acid showed good performance for the decalcification. The properties of the refined biodiesel accorded with the domestic and foreign standards.

References (16)

Y Ono
J Catal
(2003)
H Hattori
Appl Catal A
(2001)
U Schuchardt et al.
J Mol Catal A
(1995)
U Schuchardt et al.
J Mol Catal A
(1996)
H-J Kim et al.
Catal Today
(2004)
L Bournay et al.
Catal Today
(2005)
S Bancquart et al.
Appl Catal A
(2001)
J Yan
Machinery Cereals Oil Food Process
(2005)

There are more references available in the full text version of this article.

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: Foundation item: Suppoted by the Opening Fund of State Key Laboratory of Automotive Safety and Energy, Tsinghua University (KF2005-012).

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RESEARCH PAPERPreparation of Biodiesel Catalyzed by Solid Super Base of Calcium Oxide and Its Refining Process

Abstract

J Catal

Appl Catal A

J Mol Catal A

J Mol Catal A

Catal Today

Catal Today

Appl Catal A

Machinery Cereals Oil Food Process

RESEARCH PAPER
Preparation of Biodiesel Catalyzed by Solid Super Base of Calcium Oxide and Its Refining Process