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Method for preparing biodiesel by sulfonic acid type ion liquid

An ionic liquid and catalytic preparation technology, applied in the preparation of liquid hydrocarbon mixtures, biological raw materials, biofuels, etc., can solve the problem of catalyst stability to be improved, and achieve a simplified post-treatment process, a simple separation process, and low corrosiveness. Effect

Inactive Publication Date: 2009-06-10
GUANGDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the stability of the catalyst used in this method needs to be improved

Method used

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  • Method for preparing biodiesel by sulfonic acid type ion liquid
  • Method for preparing biodiesel by sulfonic acid type ion liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Example 1. Weigh 20g (0.023mol) of soybean oil, 8.83g (0.28mol) of methanol, and 1.6g (0.0053mol) of 1-(3-sulfopropyl)-2-pyrrolidone bisulfate into the autoclave , the reaction temperature is 120° C., the reaction time is 8 hours, after the reaction, the mixture is allowed to stand for stratification, and the biodiesel phase is separated, and distilled at atmospheric pressure to remove a small amount of methanol, and the yield of methyl ester is 96.4%.

Embodiment 2

[0021] Embodiment 2, take by weighing respectively peanut oil 20g (0.023mol), methanol 8.83g (0.28mol), 4-(3-sulfopropyl)morpholine bisulfate 0.8g (0.0026mol) and add in the autoclave, the reaction temperature The temperature was 120°C, and the reaction time was 8 hours. After the reaction, the mixture was allowed to stand for stratification, and the biodiesel phase was separated, and distilled at atmospheric pressure to remove a small amount of methanol. The yield of methyl ester was 80.5%.

Embodiment 3

[0022] Example 3, respectively weighed tung oil 20g (0.026mol), methanol 10.11g (0.32mol), 1-(3-sulfopropyl)-2-pyrrolidone bisulfate 0.8g (0.0026mol) into the autoclave , the reaction temperature is 140° C., the reaction time is 8 hours, after the reaction, the mixture is allowed to stand for stratification, and the biodiesel phase is separated, and distilled at atmospheric pressure to remove a small amount of methanol, and the yield of methyl ester is 87.6%.

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Abstract

The invention discloses a method for preparing biodiesel through catalysis of sulfonic acid-type ionic liquid. The method comprises the following steps: according to certain proportion, a lipin material, methanol and ionic liquid are added into a high-pressure reaction kettle, are heated for reaction; after reaction is finished, the mixture is kept stand and is delaminated; a product is separated out; a small amount of methanol is distilled and removed at normal atmosphere; the method adopts sulfonic acid-type ketopyrrolidine or protoporphyrin ionic liquid with strong acidity as a catalyst for interesterification reaction; and the catalyst catalyzes the lipin and methanol to prepare the biodiesel. The method has the advantages that the used sulfonic acid-type ionic liquid has strong acidity, high catalytic activity, good stability and low corrosion to equipment; after the reaction is finished, the sulfonic acid-type ionic liquid and the product can automatically carry out phase splitting, has a simple separation process, and is environment-friendly in production process.

Description

Technical field [0001] The invention relates to a method for preparing biodiesel through catalysis of sulfonic acid ionic liquid, and belongs to the technical field of green renewable energy. Background technique [0002] Biodiesel is a kind of biomass energy and an excellent alternative fuel to petrochemical diesel. As a renewable energy source, biodiesel has unique environmental advantages: the emissions of soot particles, sulfur content, carbon monoxide, etc. in the combustion exhaust gas are significantly reduced, and biodiesel itself is easy to biodegrade, has a high cetane number, and has good lubrication properties. , safe storage and transportation, good explosion resistance, high energy density and other advantages, therefore, it has been highly valued by countries around the world. [0003] Biodiesel (Biodiesel) is made from plant fruits, seeds, animal and vegetable oils, waste cooking oil, etc., and is transesterified with alcohols (methanol, ethanol) to obtain a...

Claims

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Application Information

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IPC IPC(8): C10G3/00
CPCY02E50/13Y02E50/10Y02P20/52Y02P30/20
Inventor 黄宝华史娜黎子进徐效陵霍延平方岩雄张焜杜志云赵肃清
Owner GUANGDONG UNIV OF TECH
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