Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6768791 | Renewable Energy | 2014 | 8 Pages |
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.
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Authors
Vishal Mutreja, Satnam Singh, Amjad Ali,