Production of soybean ethanol-based biodiesel using CaO heterogeneous catalysts promoted by Zn, K and Mg

Fernandes, Fabiano A. N.; Lopes, Ronier M.; Mercado, Marina P.; Siqueira, Evne S.

doi:10.1080/15435075.2014.977441

Cited by 19 publications

(1 citation statement)

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“…These phases were also transformed to the K 3 AlO 3 structure (JCPDS No. 27‐1336) owing to the reaction between K 2 O and Al 2 O 3 which can explain the much higher activity of the sample calcined at 700 °C as compared to the one calcined at a lower temperature .…”

Section: Resultsmentioning

confidence: 99%

Application of Microwave Irradiation for Preparation of a KOH/Calcium Aluminate Nanocatalyst and Biodiesel

2017

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Microwave combustion was applied for the fabrication of KOH/calcium aluminate for microwave‐enhanced biodiesel production. The effect of calcium nitrate and potassium hydroxide dosages on the properties and activities of samples was assessed. When the Ca/Al ratio was increased, the activity was enhanced probably due to the transformation of the sample to an active mayenite structure. The activity of the sample was reduced by a higher KOH loading as a result of covering the surface and porosity of the support by potassium components. The optimum sample was utilized in the transesterification reaction by two heating systems where the microwave irradiation reduced the reaction time drastically as compared to the conventional heating system. The sample converted canola oil to methyl ester nearly completely and showed high stability via calcination after each usage.

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Section: Resultsmentioning

confidence: 99%