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

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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 themain 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.

Keywords: Biodiesel, Heterogeneous catalyst, Layered double hydroxide, Cobalt, Transesterification of canola oil, Ethanol

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Informasi Detail

Judul Seri

Applied Catalysis B: Environmental

No. Panggil

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Penerbit

London : Elsevier B.V.., 2009

Deskripsi Fisik

Applied Catalysis B: Environmental 88 (2009) 42–49

Bahasa

English

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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