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

A technology of deep eutectic solvent and biodiesel, which is applied in the fields of biofuel, fat oil/fat production, fuel, etc., can solve the problems of difficult separation, complicated process and high cost, and achieve the effect of reducing cost, simple process and low cost

Pending Publication Date: 2021-07-09
JIUJIANG UNIVERSITY
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  • Abstract
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Problems solved by technology

[0007] The present invention aims at the technical defects of the prior art, and provides a method for in-situ preparation of biodiesel with the aid of ultrasound in a deep eutectic solvent / n-hexane system using Gardenia jasminoides Jiangxi as a raw material, so as to solve the complex process of conventional preparation methods , separation difficulties, low yield, high cost and other technical problems

Method used

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

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Effect test

Embodiment 1

[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...

Embodiment 2

[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...

Embodiment 3

[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...

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Abstract

The invention provides a method for in-situ preparation of biodiesel in a deep eutectic solvent / n-hexane system by using Jiangxi gardenia as a raw material through ultrasonic assistance. In the technical scheme, the deep eutectic solvent is prepared by blending and heating tetrabutyl ammonium chloride and oxalic acid, the tetrabutyl ammonium chloride serving as quaternary ammonium salt has phase transfer capacity, and the structure and polarity of the tetrabutyl ammonium chloride are similar to those of raw material grease, so that the grease can be easily extracted from the raw material; and oxalic acid plays a role of an acid catalyst to promote the transesterification. In the whole reaction process, the deep eutectic solvent has the effects of an extracting agent and a catalyst, and the step of firstly extracting and then catalyzing in the traditional process is omitted. The biodiesel production process provided by the invention has the advantages of easiness in product separation, simple process, high yield, lower cost, environmental friendliness, easiness in industrial popularization and the like. In addition, the rich and cheap Jiangxi gardenia raw material is fully utilized.

Description

technical field [0001] The invention relates to the technical field of biodiesel preparation, in particular to a method for preparing biodiesel in situ with the aid of ultrasound in a deep eutectic solvent / n-hexane system using Gardenia jasminoides Jiangxi as a raw material. Background technique [0002] At present, due to the excessive utilization of non-renewable fossil energy such as petroleum, a series of major social problems related to human survival have been caused, such as energy crisis, global warming, and environmental pollution. Now, energy and environmental issues have become important issues that must be solved for the sustainable development of human society. For this reason, many researchers at home and abroad have proposed the principle of "carbon neutrality". carbon dioxide. The use of renewable clean energy has become an important means to achieve the principle of carbon neutrality. When countries around the world develop new energy, the first considerat...

Claims

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Application Information

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IPC IPC(8): C10L1/02C11C3/10C11B1/10
CPCC10L1/02C11C3/10C11B1/106Y02E50/10
Inventor 向程曾格赵双张思雨
Owner JIUJIANG UNIVERSITY
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