Polycarboxylic acid mixed ester ionic liquid catalyst and preparation method thereof

A technology of ionic liquid and polycarboxylic acid, applied in the direction of physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, chemical instrument and method, etc., can solve the problem of limited application, high price, and prohibitive users and other problems to achieve the effect of improving equipment corrosion and environmental pollution

Inactive Publication Date: 2010-06-09
郭颖
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, some ionic liquid catalysts developed at present, such as the amino acid salt ionic liquid catalyst disclosed in Chinese patent CN1631539A, are very expensive and discourage users.
There are also some ionic liquid catalysts, such as the fluoroborate ionic liquid catalyst with the largest number at present, due to the difficulty of recycling the catalyst, it is limited to its application

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment 1: Nylonate 50g is put into the beaker that fills 100ml methanol, while stirring, add dropwise 98%H 2 SO 4 5ml, the mixture was stirred at room temperature for 1 hour, transferred to a rotary evaporator, and evaporated excess methanol and water at 40°C to 60°C to obtain the polycarboxylic acid mixed ester ionic liquid catalyst.

Embodiment 2

[0012] Embodiment 2: 50g of methyl nylon acid and 10g of sodium bisulfate are mixed, and it is all dissolved to obtain polycarboxylic acid mixed ester ionic liquid catalyst.

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PUM

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Abstract

The invention relates to a polycarboxylic acid mixed ester type ionic liquid catalyst which is prepared from cheap and accessible raw material polycarboxylic acid, has low cost, high activity, low consumption and wide application, and can be used in various catalytic reactions such as etherification, esterification, hydrogenation, acylation and isomerization. The ionic liquid catalyst is a green and environmentally friendly liquid catalyst with wide application, low price and easy preparation method and has the potential to replace the traditional inorganic acid catalyst.

Description

field of invention [0001] The invention relates to a polycarboxylic acid mixed ester ionic liquid catalyst and a preparation method thereof, belonging to the field of new chemical materials. Background technique [0002] Ionic liquids are a research hotspot in the field of chemical industry in recent years. Ionic liquids are liquids composed of ions, and are molten salts that are liquid at low temperatures (<100°C), and are generally composed of organic cations and inorganic anions. Compared with traditional organic solvents and catalysts, it has a series of advantages: ① non-volatile (high boiling point); ② its solubility can be adjusted through the design of anions and cations, and its acidity can be adjusted to super acid; ③ easy to separate phases, can be combined with other The solvent forms a two-phase or multi-phase system and is suitable as a reaction medium, catalyst, solvent, etc. Ionic liquids replace traditional solvents and catalysts and improve the process...

Claims

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Application Information

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IPC IPC(8): B01J31/04
Inventor郭颖张天德
Owner郭颖