Solid base catalyst and applications for preparing biological diesel oil

A technology of solid base catalyst and biodiesel, which is applied in molecular sieve catalysts, physical/chemical process catalysts, biofuels, etc., can solve the problems of time and energy consumption, waste of raw materials, etc., and achieve no environmental pollution, less energy consumption, and high productivity high 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 for preparing biological diesel oil
  • Solid base catalyst and applications for preparing biological diesel oil
  • Solid base catalyst and applications for preparing biological diesel oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

[0017] Put 6g of potassium acetate and 10g of alumina in a mortar, grind at room temperature for about 1 hour, and then roast in a muffle furnace at 500°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 reacted 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 layer of glycerin, and the upper layer product is added with 6% NaHCO 3 Solution 70ml washes to neutrality, to remove unreacted free fatty acid, separates the upper layer organic ...

Embodiment 2-6

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

[0024] Table 1

[0025]

Embodiment 7-15

[0027] Except for the following differences, the others are the same as in Example 1, and the carriers shown in Table 2 are used respectively.

[0028] Table 2

[0029]

[0030]

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PUM

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Abstract

The invention discloses a solid base catalyst and is application in biodiesel synthesis. The catalyst is prepared from organic metal salt and aluminium oxide or diatomite by grinding and mixing at room temperature, and calcining at 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 into 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 preparing biodiesel. 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): B01J27/232B01J29/70C10G3/00
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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