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Method for synthesizing biologic diesel oil based on ion liquid

An ionic liquid and biodiesel technology, applied in renewable energy and green fields, can solve problems such as large gaps, and achieve the effect of environmental friendliness and simple process

Active Publication Date: 2005-11-16
INST OF PROCESS ENG CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] my country is rich in oil crop resources, but the research on biodiesel is in its infancy, and some biodiesel research has been carried out over the years, but there is a big gap compared with western developed countries

Method used

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  • Method for synthesizing biologic diesel oil based on ion liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Synthesis of Biodiesel Catalyzed by Basic Ionic Liquids

[0015] The ionic liquid used is [emim][OH]

[0016] Reaction implementation method: 20g (about 0.023mol) of soybean oil was added to a 50mL clean and dry three-neck round bottom flask, preheated in an oil bath at 60°C, and at the same time, 4.4g of anhydrous analytically pure methanol (about 0.138mol) Mix well with 0.2g [emim][OH] ionic liquid and reflux in an oil bath to preheat to 60°C, then quickly add it into a three-neck round bottom flask, control the temperature at 60±0.1°C, react for 1h, the results are listed in Table 1 .

[0017] Reaction temperature / ℃

Embodiment 2

[0019] Catalytic synthesis of biodiesel by alkaline ionic liquid and other bases

[0020] The catalytic system used is [emim][OH]+NaOH

[0021] Reaction implementation method: 20g (about 0.023mol) of soybean oil was added to a 50mL clean and dry three-neck round bottom flask, preheated in an oil bath at 60°C, and at the same time, 4.4g of anhydrous analytically pure methanol (about 0.138mol) Mix well with 0.1g [emim][OH] and 0.1g NaOH and preheat it to 60°C in an oil bath, then quickly add it into a two-neck round bottom flask, control the temperature at 60±0.1°C, and react for 50min, the results are listed in Table 2.

[0022] Reaction temperature / ℃

Embodiment 3

[0024] Synthesis of Biodiesel Catalyzed by Acidic Ionic Liquid

[0025] The ionic liquid is [bmim][HSO 4 ]

[0026] Reaction implementation method: Add 20g (about 0.023mol) soybean oil and 10.72g anhydrous analytical pure methanol (about 0.46mol) into a 125mL clean and dry three-neck round bottom flask, preheat it in an oil bath at 80°C, and at the same time Mix 4.0g of anhydrous analytically pure methanol (to reduce the viscosity of the ionic liquid) with 2g of [bmim][HSO 4 ] The ionic liquid was fully mixed and preheated to 60°C, then quickly added to a three-necked round-bottomed flask, controlled at 80±0.1°C, and reacted for 20 hours. The results are listed in Table 3.

[0027] Reaction temperature / ℃

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Abstract

A process based on ionic liquid for synthesizing biologic diesel oil features that the ionic liquid can be used as both catalyst and solvent, so speeding up the reaction. Said ionic liquid is prepared from the N or P contained compound (alkylimidazole, alkylpyredine, quaternary ammonium salt, etc) and the halide (or acidic salt) of metal or non-metal.

Description

[0001] Technical field: The present invention relates to the technical field of green and renewable energy, and specifically refers to a method for preparing biodiesel by catalysis based on ionic liquid. Background technique: [0002] With the gradual depletion of fossil resources and increasing attention to global environmental protection issues, countries are looking for renewable energy and resources. As the trend of vehicle dieselization in the world is accelerating, the demand for diesel is increasing rapidly. As a biomass energy, biodiesel (fatty acid methyl ester) has a wide range of raw materials and is renewable. On the one hand, it has advantages over petrochemical diesel oil, so it is quickly developed, promoted and utilized by developed countries such as Europe and the United States. [0003] Biodiesel was successfully developed in Germany in 1988, using rapeseed oil as a raw material, and was officially put on the market in 1989. After three years of use, it has b...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02P30/20
Inventor 张锁江孙剑张建敏张香平李增喜
Owner INST OF PROCESS ENG CHINESE ACAD OF SCI
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