Method for in-situ preparation of biodiesel from Jiangxi gardenia as raw material in deep eutectic solvent/n-hexane system through ultrasonic assistance

[0047] The extraction-transesterification coupling in-situ preparation of biodiesel in a deep eutectic solvent / n-hexane system using Gardenia jasminoides Jiangxi as raw materials includes the following steps:

[0048] (1) The Jiangxi Gardenia raw material is sterilized by autoclaving, washed with deionized water, dried in vacuum, pulverized by a pulverizer to obtain Jiangxi Gardenia powder raw material;

[0049] (2) In a 250ML round-bottomed flask, add 30g of Jiangxi Gardenia powder with an alcohol-to-oil ratio of 10:1, 180ml of deep eutectic solvent / n-hexane mixed solution, including 2.7g of DES. After installing the condensing device, put it into the ultrasonic reactor;

[0050] (3) Start the ultrasonic reactor heating device and set the reaction temperature to 30°C. After reaching the set value, start the ultrasonic switch and start to react;

[0051] (4) The reaction is terminated, wait for the flask to be cooled to normal temperature, unload the condensing reflux device...

[0055] The extraction-transesterification coupling in-situ preparation of biodiesel in a deep eutectic solvent / n-hexane system using Gardenia jasminoides Jiangxi as raw materials includes the following steps:

[0056] (1) The Jiangxi Gardenia raw material is sterilized by autoclaving, washed with deionized water, dried in vacuum, pulverized by a pulverizer to obtain Jiangxi Gardenia powder raw material

[0057] (2) In a 250ML round bottom flask, add 30g of Jiangxi Gardenia powder, alcohol-to-oil ratio 10:1, 180ml deep eutectic solvent / n-hexane mixed solution, including 2.7g of DES. After installing the condensing device, put it into the ultrasonic reactor;

[0058] (3) Start the ultrasonic reactor heating device and set the reaction temperature to 40°C. After reaching the set value, start the ultrasonic switch and start to react;

[0059] (4) The reaction is terminated, wait for the flask to be cooled to normal temperature, unload the condensing reflux device, take out the s...

[0063] The extraction-transesterification coupling in-situ preparation of biodiesel in a deep eutectic solvent / n-hexane system using Gardenia jasminoides Jiangxi as raw materials includes the following steps:

[0064] (1) The Jiangxi Gardenia raw material is sterilized by autoclaving, washed with deionized water, dried in vacuum, pulverized by a pulverizer to obtain Jiangxi Gardenia powder raw material;

[0065] (2) In a 250ML round bottom flask, add 30g of Jiangxi gardenia powder, the alcohol-to-oil ratio is 10:1, 180ml deep eutectic solvent / n-hexane mixed solution, of which DES 2.7g. After installing the condensing device, put it into the ultrasonic reactor;

[0066] (3) Start the ultrasonic reactor heating device and set the reaction temperature to 50°C. After reaching the set value, start the ultrasonic switch and start to react;

[0067] (4) The reaction is terminated, wait for the flask to be cooled to normal temperature, unload the condensing reflux device, take out t...