Solid base catalyst for preparing biodiesel

A solid base catalyst, biodiesel technology, applied in physical/chemical process catalysts, biofuels, petroleum industry and other directions, can solve the problems of high energy consumption and high equipment requirements, and achieve the effects of easy purification, cost reduction and easy separation
CN104107705AInactive Publication Date: 2014-10-22CHINA UNIV OF GEOSCIENCES (WUHAN)
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHINA UNIV OF GEOSCIENCES (WUHAN)
Publication Date
2014-10-22
Estimated Expiration
Not applicable · inactive patent
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Abstract

The invention discloses a solid base catalyst for preparing biodiesel. The solid base catalyst is prepared by adopting the method comprising the steps of respectively dissolving ZnCl2, MnCl2 and K2CO3 in deionized water; mixing a mixed solution of ZnCl2 and MnCl2 with a K2CO3 solution to obtain a sediment; and aging the sediment, then filtering, washing and drying, and then calcining to obtain a manganese carbonate / zinc oxide compound solid base catalyst, wherein raw materials comprise 5.7-8.5 parts by weight of ZnCl2, 10-16.5 parts of MnCl2, and 18-22 parts of K2CO3. The solid base catalyst disclosed by the invention is capable of efficiently catalyzing transesterification reaction under the reaction condition of subcritical methanol, wherein the conversion rate is maximally more than 99 percent. Meanwhile, the solid base catalyst has the advantages of heterogeneous catalysis and supercritical reaction, and is easy to separate; glycerinum and biodiesel are easily refined; the transesterification rate is high.
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Description

technical field

[0001] The invention belongs to the technical field of catalysts, and in particular relates to a solid base catalyst for preparing biodiesel. Background technique

[0002] Biodiesel refers to clean alternative fuels produced from renewable biological resources such as plants and animal fats that can be used in compression ignition engines. The main components are ester compounds formed by long-chain saturated unsaturated fatty acids such as palmitic acid, stearic acid, and oleic acid with methanol or ethanol. Biodiesel has the characteristics of high cetane number, better anti-knock performance than petrochemical diesel; non-toxic, does not contain aromatic components; high flash point, which is conducive to transportation safety; good low temperature fluidity, can be widely used and so on. Moreover, biodiesel can be directly used with existing diesel engines and blended with petrochemical diesel in a certain proportion, which can reduce fuel consumption, im...

Claims

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