Production of biological diesel oil with solid alkali
A technology of biodiesel and solid alkali catalysts, which is applied in biofuels, biological raw materials, petroleum industry, etc., can solve the problems of high catalytic activity, slow reaction rate, and long reaction time, and achieve simple and easy control of the process and mild reaction conditions , good economic benefits
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Embodiment 1
[0026] Under stirring, 7.86 g of calcium nitrate tetrahydrate was dissolved in 400 ml of ethanol, and stirring was continued for 30 minutes. 200 ml of deionized solution dissolved with 3.51 g of sodium carbonate was slowly added dropwise to the above solution, the precipitate was centrifuged, washed 4 times with deionized water, and then dried in an oven at 110° C. for 24 hours. The obtained sample was calcined at 1200° C. for 0.5 hour to obtain solid particle type solid base SX1.
[0027] 19.2 grams of methanol and 85 grams of jatropha oil were added to a 500-ml round-bottomed flask with 1.7 grams of SX1 placed in advance, a condenser tube and a drying tube were installed, the temperature was raised to 90° C. for 2.5 hours under stirring, and the reaction was stopped. When the temperature drops to 60°C, methanol is recovered by distillation under reduced pressure at a vacuum of -0.1 MPa under slow stirring until the vacuum no longer changes. Centrifuge to remove solid partic...
Embodiment 2
[0030] Under stirring, 7.86 g of calcium nitrate tetrahydrate was dissolved in 15.72 ml of deionized water and stirring was continued for 60 minutes. 200 ml of deionized solution dissolved with 10.55 g of sodium carbonate was slowly added dropwise to the above solution, centrifuged to separate the precipitate, washed 4 times with deionized water, and then placed in an oven at 110° C. for 24 hours to dry. The obtained sample was calcined at 700° C. for 10 hours to obtain solid particle type solid base SX2.
[0031] Add 3.2 grams of methanol, 0.72 grams of ethanol and 8.5 grams of castor oil into a 500 ml round-bottomed flask with 0.034 grams of SX2 placed in advance, install a condenser tube and a drying tube, heat up to 40 ° C for 0.8 hours under stirring, and stop the reaction . While keeping the temperature at 40°C, under slow stirring, the methanol was distilled under reduced pressure at a vacuum of -0.08MPa to recover methanol until there was no change in the vacuum. Cen...
Embodiment 3
[0033] Add 4 g of barium nitrate and 4.3 g of magnesium chloride hexahydrate into 600 ml of ethanol, and ultrasonically disperse for 30 minutes. Under stirring, heat the above solution to 60°C, add 200ml of isopropanol, 0.8g of succinic acid, add 2.75g of XC-72 activated carbon, stir and ultrasonic for 4 hours, slowly add 0.5g of polyethylene glycol dropwise 400 aqueous solution 200 ml, continue to stir for 4 hours. Slowly evaporate the solvent at 90°C, raise the temperature from 30°C to 850°C at a rate of 1°C / min, and calcinate at 850°C for 4 hours, porous solid base DK1.
[0034]Add 1.12 grams of methanol and 8.5 grams of cottonseed oil into a 500-ml round-bottomed flask with 0.77 grams of DK1 in advance, install a condenser tube and a drying tube, heat up to 75°C for 20 hours under stirring, and stop the reaction. When the temperature dropped to 30°C, methanol was distilled under reduced pressure at a vacuum of -0.1 MPa under slow stirring until the vacuum no longer change...
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