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A kind of immobilized ionic liquid catalyst and its application in the preparation of synthetic ester lubricating oil

The technology of ionic liquid and catalyst is applied in the field of immobilized ionic liquid catalyst and in the preparation field of synthetic ester lubricating oil, which can solve the problems of high cost, large energy consumption, large amount of consumption, etc., and achieves simple synthesis method and high catalyst activity. , the effect of speeding up the process of industrial application

Active Publication Date: 2019-06-14
LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, homogeneous ionic liquids also have many disadvantages in the catalysis process: large dosage and certain corrosiveness, high energy consumption, and high cost, which limit the industrial application of ionic liquids as a new type of high-efficiency catalyst.

Method used

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  • A kind of immobilized ionic liquid catalyst and its application in the preparation of synthetic ester lubricating oil
  • A kind of immobilized ionic liquid catalyst and its application in the preparation of synthetic ester lubricating oil
  • A kind of immobilized ionic liquid catalyst and its application in the preparation of synthetic ester lubricating oil

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1-Butanesulfonic acid-3-methylimidazolium bisulfate ([BHSO 3 MIm]HSO 4 )Synthesis

[0027] Step 1. Mix 1 mol of methylimidazole, equimolar 4-butane sultone and 100 mL of acetone in a three-necked flask, 25 o C with mechanical stirring for 3 days. When a white solid is separated out, the reaction temperature is raised to 50 o C, continue to react for 3 days, a large amount of white solid is precipitated, and the white solid obtained by filtering is BMImSO 3 , BMImSO can be crystallized again after distillation 3 , the product was purified by washing with acetone.

[0028] Step 2. Slowly add 1 mol of the above product dropwise to 1.02 mol of concentrated sulfuric acid (98%) under ice-bath stirring conditions to form a liquid product, and evaporate the water in the product to obtain a colorless viscous liquid [BHSO 3 MIm] + [HSO 4 ] - .

Embodiment 2

[0030] Synthesis of 1-butylsulfonic acid-3-methylimidazolium dihydrogen phosphate

[0031] Under the condition of stirring in an ice bath, 1 mol of the product in Step 1 of Example 1 was slowly added dropwise to 1.18 mol of concentrated phosphoric acid (85%) to generate a liquid product, and the water in the product was evaporated to dryness to obtain a colorless viscous liquid [BHSO 3 MIm] + [H 2 PO 4 ] - .

Embodiment 3

[0033] Synthesis of 1-butylsulfonic acid-3-methylimidazole trifluoroacetate

[0034] Under the condition of stirring in an ice bath, 1 mol of the product in Step 1 of Example 1 was slowly added dropwise to an equimolar amount of trifluoroacetic acid to form a solid product, and the water in the product was evaporated to dryness to obtain a white solid [BHSO 3 MIm] + [CF 3 CO 2 ] - .

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Abstract

The invention discloses a solid-supported ionic liquid catalyst. The catalyst is prepared by the following method: 1) Stir ionic liquid, absolute ethanol, and tetraethyl orthosilicate at a constant temperature of 40oC~70oC until the ionic liquid is dissolved and the solution is clear. , then add hydrochloric acid solution, continue stirring for 1 h to 3 h, and then let it stand for 12 h to 24 h to obtain the initial product of the mesoporous silica solid-supported ionic liquid catalyst; 2) The mesoporous silica solid-supported ionic liquid catalyst is obtained The initial product of the silicon solid-supported ionic liquid catalyst is dried under vacuum at 80oC~100oC for 3 h~6 h, and the mesoporous silica solid-supported ionic liquid catalyst is obtained. The invention also discloses the application of the catalyst in the preparation of synthetic ester lubricating oil. The catalyst synthesis method involved in the present invention is simple and has high catalyst activity, which greatly accelerates the process of its industrial application.

Description

technical field [0001] The invention relates to a solid-supported ionic liquid catalyst and its application in the preparation of synthetic ester lubricating oil. Background technique [0002] Synthetic ester base oil has been playing an indispensable role in the aviation field as a key component of aviation lubricants due to its excellent high and low temperature performance, lubricating performance and other good comprehensive properties; It has the characteristics of blending, renewable sources of raw materials, and environmental friendliness, so it has important potential applications in industries such as automobiles, metallurgy, and cement. A lot of research work has been carried out internationally on the structure-activity relationship, preparation process, performance and application of synthetic esters, but the depth and systematicness of the research still need to be further deepened and improved. Domestic synthetic ester basic theory and key technologies are lac...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/02B01J31/04B01J35/10C07C67/08C07C69/33C07C69/003C10M129/74
CPCC10M129/74C07C67/08B01J31/0285B01J31/0295B01J31/04B01J2231/49C10M2207/2835B01J35/617B01J35/615B01J35/638B01J35/635B01J35/647
Inventor 王晓波王亚南赵改青李维民
Owner LANZHOU INST OF CHEM PHYSICS CHINESE ACAD OF SCI
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