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Solid base catalyst and applications of biological diesel oil synthesizing

A solid base catalyst, biodiesel technology, applied in physical/chemical process catalysts, biofuels, biological raw materials, etc., can solve the problems of waste of raw materials, time-consuming and energy consumption, and achieve high utilization rate of raw materials, no environmental pollution, and production. high rate effect

Inactive Publication Date: 2008-08-27
EAST CHINA NORMAL UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Generally, the synthesis of supported solid base involves dissolving the active component with water first, then impregnating, and then filtering or decompressing to evaporate the water, which is a cumbersome process, which is time-consuming, energy-consuming, and wastes a lot of raw materials.

Method used

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  • Solid base catalyst and applications of biological diesel oil synthesizing
  • Solid base catalyst and applications of biological diesel oil synthesizing
  • Solid base catalyst and applications of biological diesel oil synthesizing

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] Preparation of the 1st step solid base catalyst

[0017] Put 6g of magnesium acetate and 10g of potassium hydroxide in a mortar, grind at room temperature for about 1 hour, and then roast in a muffle furnace at 800°C for 5 hours to obtain the product.

[0018] Step 2 transesterification reaction

[0019] Add 5g of rapeseed oil, 1.5g of methanol, and 0.1g of the above-mentioned solid base catalyst into a 100mL three-necked flask equipped with electromagnetic stirring, a thermometer, and a reflux condenser, heat under reflux and stir for 2 hours, and heat to 90°C.

[0020] Step 3 Separation of catalyst and purification of product

[0021] Filter the material in the three-necked bottle, the filtered catalyst can be directly used for the next reaction, the filtrate is separated to separate the lower glycerin, and the upper layer mixture is added with a mass fraction of 6% NaHCO 3 Solution 70ml washes to neutrality, to remove unreacted free fatty acid, separates the upper ...

Embodiment 2-6

[0023] Except following difference, all the other are identical with embodiment 1, in the process of preparing catalyst, magnesium acetate is by the consumption of table 1.

[0024] Table 1

[0025]

Embodiment 7-11

[0027] Except the following differences, all the other are the same as Example 1, adopting the acetates shown in Table 2 respectively.

[0028] Table 2

[0029]

[0030]

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PUM

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Abstract

The invention discloses a solid base catalyst and application thereof in biodiesel synthesis. The catalyst is prepared by allowing organic metal salt and alkali or alkali carbonate to a solid phase reaction and calcining at a high temperature. The biodiesel is synthesized by ester exchange, by adding grease, low carbon alcohol and the solid base catalyst into a three-necked container to heat for refluxing under stirring, filtering to obtain catalyst, demixing the filtrate to obtain lower layer glycerol and upper layer mixture, adding NaHCO3 solution to the upper layer mixture, washing until a neutral condition, drying with anhydrous MgSO4, and vacuum distilling. The catalyst for biodiesel synthesis has the advantages of high yield, cheap price, small consumption amount, mild reaction condition, short reaction time, repeated use of the catalyst, no environmental pollution and low requirement for raw material.

Description

technical field [0001] The invention relates to the technical field of organic chemical synthesis, in particular to a solid base catalyst and its application in biodiesel synthesis. Background technique [0002] With the decreasing mineral resources such as petroleum and their impact on the earth's environment, the development of new green and renewable fuel resources has become an issue of widespread concern. Biodiesel is a mono-alkyl ester of long-chain fatty acid, free of sulfur and aromatics, high cetane number, and good lubricating performance, it is a high-quality clean fuel. At the same time, biodiesel has incomparable advantages over traditional fossil fuels. The raw material is renewable biomass oil. The product itself is environmentally friendly, biodegradable, high flash point, non-toxic, low in volatile organic compounds (VOC), and has a high calorific value. High, complete combustion, no need to replace and clean the engine frequently, and it is also a raw mate...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/232B01J23/04C10G3/00
CPCY02E50/10Y02P30/20
Inventor 杨建国梁学正高珊权南南张敬鲍少华王箭何鸣元
Owner EAST CHINA NORMAL UNIV
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