Potassium impregnated nanocrystalline mixed oxides of La and Mg as heterogeneous catalysts for transesterification

Vishal Mutreja, Satnam Singh and Amjad Ali

Renewable Energy, 2014, vol. 62, issue C, 226-233

Abstract: Potassium impregnated mixed oxides of lanthanum and magnesium in 1:1 to 1:5 atomic ratios were prepared by co-precipitation at a constant pH. These were characterized by FEG–SEM–EDX, TEM, Powder XRD, Hammett indicators and acid/base titration and, were evaluated as heterogeneous catalysts for transesterification of used cotton seed oil with methanol. The optimized reaction conditions for the catalyst, prepared at pH 10 using 1:3 atomic ratio of lanthanum and magnesium, were the use of 1:54 molar ratio of oil to methanol and 5 wt.% of the catalyst at 65 °C that resulted into 96% conversion to biodiesel within 20 min. The catalyst showed tolerance of 1 wt.% of moisture. Concentration of potassium ions leached out from catalyst into biodiesel was within permissible limit of ASTM.

Keywords: Transesterification; Biodiesel; Heterogeneous catalysis; Solid base catalyst (search for similar items in EconPapers)
Date: 2014
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Citations: View citations in EconPapers (9)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:62:y:2014:i:c:p:226-233

DOI: 10.1016/j.renene.2013.07.015

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