A kind of method for preparing biological lubricating oil catalyzed by acidic polymeric ionic liquid
A technique for the preparation of polymerized ionic liquids and catalysis, which is applied in chemical instruments and methods, organic compound/hydride/coordination complex catalysts, lubricating compositions, etc., which can solve separation difficulties, ionic liquids are not easy to recycle, and hinder wide application, etc. problem, to achieve the effects of good atom economy, recyclable catalyst activity, and controllable and adjustable structure
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[0037] Preparation of biological lubricating oil: In a three-necked bottle equipped with a magnetic stirrer or mechanical stirring, a reflux condenser and a thermometer, add a certain proportion of epoxy methyl ester, organic alcohol, and the above-mentioned acidic polymerized ionic liquid catalyst, among which epoxy methyl ester The molar ratio of ester to organic alcohol is 1:1 to 1:6, and the mass ratio of acidic polymeric ionic liquid to epoxy methyl ester is 1:4 to 1:60. The temperature is raised to the reaction temperature to start the reaction timing. After the predetermined reaction time, the reaction is stopped. After the reaction solution is cooled and allowed to stand, the product is layered with the acidic polymer ionic liquid. The polymer ionic liquid separated from the lower layer can be reused after simple treatment. The upper layer is reacted The organic alcohol is removed by distillation of the product liquid to obtain a biological lubricating oil product.
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Embodiment 1
[0042] Weigh 68g of ethanol and 4g of acid vinyl ionic liquid monomer catalyst and place it in a four-necked flask with a condenser tube and a thermometer, heat to 80°C under stirring, then add 200g of epoxidized soybean oil fatty acid methyl ester, and measure The initial epoxy value of the reaction system was 5.46, and the ring-opening reaction was carried out at this temperature. During the reaction, samples were taken every 30 minutes to measure the epoxy value. The reaction time was t=12h, and the reaction was stopped. The above solution was cooled to room temperature, allowed to settle, and centrifuged to separate the acid vinyl ionic liquid monomer. It was found that the ionic liquid monomer catalyst was difficult to separate, and it was difficult to recover and recycle. The reaction solution was decompressed and distilled to finally obtain clear and transparent ethanol. Modified biological lubricants. The epoxy value of bio-lubricating oil is 1.076, the conversion rat...
Embodiment 2
[0044]Weigh 68g of ethanol and 4g of acidic polymerization vinyl ionic liquid catalyst and place it in a four-necked flask with a condenser tube and a thermometer, heat to 80°C under stirring, then add 200g of epoxidized soybean oil fatty acid methyl ester, and measure the reaction The initial epoxy value of the system was 5.46, and the ring-opening reaction was carried out at this temperature. During the reaction, samples were taken every 30 minutes to measure the epoxy value. When the epoxy value was less than 0.08 (t=10h), the reaction was stopped. The above solution is cooled to room temperature, allowed to settle, the product is layered with the acidic polymeric ionic liquid, the lower layer is centrifuged to obtain an acidic polymeric ionic liquid catalyst, and the upper layer reaction solution is decompressed and distilled to finally obtain a clear and transparent ethanol-modified biological lubricating oil. The epoxy value of bio-lubricating oil is 0.172, the conversio...
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