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Ionic liquid supported molecular sieve catalyst for synthesizing biodiesel fuel and preparation method of catalyst

A technology of immobilized catalysts and ionic liquids, applied in organic compound/hydride/coordination complex catalysts, physical/chemical process catalysts, chemical instruments and methods, etc., can solve problems such as product separation and restrictions on the industrialization of biodiesel , to achieve the effect of high activity

Active Publication Date: 2012-06-27
JIANGSU JINMA OIL TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most acidic ionic liquids are difficult to separate from the product after reaction, which restricts the industrialization process of its catalytic production of biodiesel

Method used

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  • Ionic liquid supported molecular sieve catalyst for synthesizing biodiesel fuel and preparation method of catalyst
  • Ionic liquid supported molecular sieve catalyst for synthesizing biodiesel fuel and preparation method of catalyst
  • Ionic liquid supported molecular sieve catalyst for synthesizing biodiesel fuel and preparation method of catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] In the reaction kettle, add 3.85g of dodecylamine, 130ml of water and 32.5ml of absolute ethanol. A mixture of 6.4ml of 3-chloropropyltriethoxysilane, 23ml of ethyl orthosilicate and 50ml of absolute ethanol was placed in the separating funnel. Turn on the power switch of the electric stirrer, set the temperature of the constant temperature water bath to 45°C, add the mixture of 3-chloropropyltriethoxysilane, tetraethyl orthosilicate and ethanol dropwise to the reaction kettle at a constant speed, and stir at constant temperature After 4 hours, the reaction product was aged in a fume hood for 16 hours, and dried by suction filtration. Add 10g of dried raw powder, 67ml of absolute ethanol and 1ml of hydrochloric acid into a 150ml flask, place it in an electromagnetic heating mantle, heat and stir for 4 hours in a boiling state, wash and filter with suction, and repeat this operation three times. Add 10 g of the chloropropyl-functionalized HMS (CP-HMS) obtained in step (...

Embodiment 2

[0020] Under the situation that the preparation conditions of the catalyst are exactly the same as that of Example 1, only the triethylamine (TEA) in the preparation method is changed to tri-n-propylamine (TPA) to obtain 12.0 g of the catalyst.

Embodiment 3

[0022] Under the situation that the preparation conditions of the catalyst are exactly the same as that of Example 1, only the triethylamine (TEA) in the preparation method is changed to tri-n-butylamine (TBA) to obtain 12.5 g of the catalyst.

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Abstract

The invention discloses an ionic liquid supported molecular sieve catalyst for synthesizing biodiesel fuel and a preparation method of the ionic liquid supported molecular sieve catalyst. Carriers of the ionic liquid supported molecular sieve catalyst comprise a chloropropyl functionalized HMS(CP-HMS) molecule sieve and a chloropropyl functionalized MCM-41(CP-MCM-41) molecule sieve, and a component needed by supporting is triethylamine (TEA), tripropylamine (TPA) or tributylamine (TBA). The preparation method comprises the steps of: in a process of synthesizing the molecular sieves, carrying out chloropropyl functionalization on the molecular sieves, synthesizing the ionic liquid by using the TEA and the functionalized molecular sieves in a tetrahydrofuran solvent to prepare the catalyst. The invention has the advantages that the prepared catalyst is used for synthesizing the biodiesel fuel, has high activity, can be repeatedly use, and can be expected to be a competitive clean process route.

Description

technical field [0001] The invention relates to the preparation and application of a synthetic biodiesel ionic liquid immobilized molecular sieve catalyst, and belongs to the technical field of synthetic biodiesel. Background technique [0002] With the global energy shortage and environmental deterioration becoming more and more serious, controlling vehicle exhaust emissions and protecting the natural environment on which human beings live have become urgent problems for human beings to solve. From the perspective of environmental protection and resource strategy, it is imperative to actively explore and develop alternative fuels and renewable energy, and biodiesel is one of them. Biodiesel is a new type of non-polluting renewable energy. Its combustion performance is comparable to that of traditional petrochemical diesel, and the harmful substances in the tail gas emitted by combustion are 50% lower than that of traditional petrochemical diesel. Therefore, the research an...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J31/02C11C3/10
CPCY02E50/13Y02E50/10
Inventor 张萍波范明明蒋平平
Owner JIANGSU JINMA OIL TECH DEV
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