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Biodiesel esterification heterogeneous catalyst and preparation method thereof

A heterogeneous catalyst, biodiesel technology, applied in physical/chemical process catalysts, organic compound/hydride/coordination complex catalysts, chemical instruments and methods, etc. , the problem of low catalytic activity, etc., to achieve the effect of stability, recyclability and high activity

Active Publication Date: 2016-09-28
三河市祥天电力工程有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In the patent of CN201010294014.0, a composite acid catalyst for producing biodiesel from acidified oil is introduced. Catalytic reaction, which played a great role in the development of biodiesel, however, they severely corroded the reaction equipment and polluted the surrounding environment
In the patent of CN201310441652.4, a compound acid catalyst for biodiesel esterification is introduced, which is composed of acids such as methanesulfonic acid and corrosion inhibitors such as phosphoric acid monoesters. However, its main components are easy to dissolve with biodiesel products and are not easy to separate
[0004] Therefore, in order to seek better effects, some new catalysts have been reported, such as resins, mesoporous silicon, and phosphotungstic acid. However, these new catalysts have low catalytic activity, are easy to deactivate, and some are even toxic. This brings new problems to the actual production
Biodiesel is an environmentally friendly green fuel, but the biodiesel preparation process uses unfriendly catalysts, which itself is not in line with the design of green chemistry

Method used

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  • Biodiesel esterification heterogeneous catalyst and preparation method thereof

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Embodiment 1

[0029] A heterogeneous catalyst for biodiesel esterification, the catalyst is a MIL-100 / AILs@ ZIF-8 catalyst.

[0030] The preparation method of the above-mentioned biodiesel esterification heterogeneous catalyst is realized through the following steps:

[0031] (1) Preparation of MIL-100

[0032] Fully dissolve ferric chloride hexahydrate in deionized water, add trimesic acid and stir for 25 minutes to form a mixed solution, put the resulting mixed solution into an autoclave, react at 120°C for 90 hours, cool to room temperature, and wash with methanol , boiled in boiling methanol for 12 hours, and vacuum-dried at 150°C for 12 hours to obtain MIL-100, wherein the mass volume ratio of ferric chloride hexahydrate to deionized water was 0.05g / mL, and the ratio of ferric chloride hexahydrate to benzenetricarboxylic acid The mass ratio is 1.5:1;

[0033] (2) Preparation of AILs

[0034] Add imidazole and 1,3-propane sultone to anhydrous ethanol solvent, wherein the molar ratio...

Embodiment 2

[0044] A heterogeneous catalyst for biodiesel esterification, the catalyst is a MIL-100 / AILs@ ZIF-8 catalyst.

[0045] The preparation method of above-mentioned biodiesel esterification heterogeneous catalyst is realized through the following steps:

[0046] (1) Preparation of MIL-100

[0047] Fully dissolve ferric chloride hexahydrate in deionized water, add trimesic acid and stir for 35 minutes to form a mixed solution, put the resulting mixed solution into an autoclave, react at 140°C for 60 hours, cool to room temperature, and wash with methanol , boiled in boiling methanol for 12 hours, and vacuum-dried at 150°C for 12 hours to obtain MIL-100, wherein the mass volume ratio of ferric chloride hexahydrate to deionized water was 0.06g / mL, and the ratio of ferric chloride hexahydrate to benzenetricarboxylic acid The mass ratio is 2.5:1;

[0048] (2) Preparation of AILs

[0049] Add imidazole and 1,3-propane sultone to anhydrous ethanol solvent, wherein the molar ratio of ...

Embodiment 3

[0059] A heterogeneous catalyst for biodiesel esterification, the catalyst is a MIL-100 / AILs@ ZIF-8 catalyst.

[0060] The preparation method of the above-mentioned biodiesel esterification heterogeneous catalyst is realized through the following steps:

[0061] (1) Preparation of MIL-100

[0062] Fully dissolve ferric chloride hexahydrate in deionized water, add trimesic acid and stir for 32 minutes to form a mixed solution, put the resulting mixed solution into an autoclave, react at 132°C for 80 hours, cool to room temperature, wash with methanol , boiled in boiling methanol for 12 hours, and vacuum-dried at 150°C for 12 hours to obtain MIL-100, wherein the mass volume ratio of ferric chloride hexahydrate to deionized water was 0.056g / mL, and the ratio of ferric chloride hexahydrate to benzenetricarboxylic acid The mass ratio is 2.2:1;

[0063] (2) Preparation of AILs

[0064] Add imidazole and 1,3-propane sultone to anhydrous ethanol solvent, wherein the molar ratio of...

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Abstract

The invention discloses a biodiesel esterification heterogeneous catalyst and a preparation method thereof. The catalyst is an MIL-100 / AILs@ZIF-8 catalyst with a core-shell structure adopting MIL-100 / AILs particles as a core phase material and ZIF-8 as a shell phase material. Preparation methods of MIL-100, AILs, MIL-100 / AILs and MIL-100 / AILs@ZIF-8 are introduced. The catalyst can be used to synthesize biodiesel. The catalyst has the advantages of high catalysis activity, difficult inactivation, easiness in separation, cycle use, environmental protection and high selectivity.

Description

technical field [0001] The invention belongs to the technical field of catalysts, and in particular relates to a biodiesel esterification heterogeneous catalyst and a preparation method thereof. Background technique [0002] In recent years, due to problems such as environmental pollution and energy shortage, a large number of non-petroleum alternative fuels have gradually attracted everyone's attention. Among them, biodiesel has attracted much attention as a clean and renewable energy due to its advantages of simple degradation, no emission of combustion and no greenhouse gas. Biodiesel is composed of various long-chain fatty acid methyl esters and ethyl esters, which can be synthesized through the esterification reaction of long-chain fatty acids and short-chain alcohols. At present, the main difficulty in the biodiesel industry lies in the selection of catalysts. [0003] In the patent of CN201010294014.0, a composite acid catalyst for producing biodiesel from acidified...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/22C11C3/08C11C3/10
CPCB01J31/0281B01J31/1691B01J31/2213B01J2231/49B01J2531/0213B01J2531/0241B01J2531/26B01J2531/842C11C3/04C11C3/08C11C3/10Y02E50/10
Inventor 魏亮
Owner 三河市祥天电力工程有限公司
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