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Ionic liquid catalyst system for bisphenol A synthesis and preparation method thereof

An ionic liquid, acidic ionic liquid technology, applied in the preparation of organic compounds, chemical instruments and methods, organic compounds/hydrides/coordination complex catalysts, etc., can solve problems such as poor thermal stability and poor swelling, and achieve quality Good, selective, and speed-up effect

Active Publication Date: 2020-08-25
PUYANG SHENGTONGJUYUAN ADVANCED MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as a catalyst for the synthesis of bisphenol A, this type of ion exchange resin has disadvantages such as poor thermal stability and poor swelling property.

Method used

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  • Ionic liquid catalyst system for bisphenol A synthesis and preparation method thereof
  • Ionic liquid catalyst system for bisphenol A synthesis and preparation method thereof
  • Ionic liquid catalyst system for bisphenol A synthesis and preparation method thereof

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preparation example Construction

[0027] In addition, for the ionic liquid catalyst system provided by the present invention, the present invention specifically provides a preparation method, comprising the following steps: uniformly mixing the sulfonated acidic ionic liquid and the mercapto-functionalized ionic liquid to obtain the catalyst system.

[0028] In addition, the invention provides an application method of the ionic liquid catalyst system, which is applied in the synthesis process of bisphenol A. Specifically, the invention provides a method for synthesizing bisphenol A, comprising the following steps:

[0029] S101: uniformly mix phenol and acetone according to a preset molar ratio to obtain a reaction mixture; then add the ionic liquid catalyst system in claims 1 to 4, and stir at a preset temperature for a preset time. Among them, in S101, the molar ratio of phenol to acetone is (8-1):1; the molar ratio of phenol to sulfonated acidic ionic liquid in the ionic liquid catalyst system is 1:(0.15-3)...

Embodiment 1

[0034] (1) Preparation of ionic liquid catalyst system

[0035] The sulfonated acidic ionic liquid catalyst is compounded with the sulfhydryl functionalized ionic liquid in a certain ratio to obtain the ionic liquid catalyst system.

[0036] Among them, the sulfhydryl functionalized ionic liquid is [HS-Pbim][HSO 4 ], the sulfonated acidic ionic liquid is [PpimSO 3 H]CF 3 SO 3 ; The molar ratio of sulfhydryl functionalized ionic liquid to sulfonated acidic ionic liquid is 1:20.

[0037] (2) Synthesis of bisphenol A

[0038] S101: Mix phenol and acetone evenly according to a preset molar ratio to obtain a reaction mixture; then add the ionic catalyst system of this embodiment, and stir at a preset temperature for a preset time. Among them, the molar ratio of phenol and acetone is 7:1, phenol and [PpimSO 3 H]CF 3 SO 3 The molar ratio is 1:0.5, the reaction temperature is 55°C, and the reaction time is 3h.

[0039] S102: Separating the product obtained in S102, followed b...

Embodiment 2

[0046] (1) Preparation of ionic liquid catalyst system

[0047] The sulfonated acidic ionic liquid catalyst is compounded with the sulfhydryl functionalized ionic liquid in a certain ratio to obtain the ionic liquid catalyst system.

[0048] Among them, the sulfhydryl functionalized ionic liquid is [Et-SH]NO 3 , the sulfonated acidic ionic liquid is [EPySO 3 H][H 2 PO 4 ]; The molar ratio of sulfhydryl-functionalized ionic liquid to sulfonated acidic ionic liquid was 1:60.

[0049] (2) Synthesis of bisphenol A

[0050] S101: Mix phenol and acetone evenly according to a preset molar ratio to obtain a reaction mixture; then add the ionic catalyst system of this embodiment, and stir at a preset temperature for a preset time. Among them, the molar ratio of phenol to acetone is 7.5:1, phenol and [EPySO 3 H][H 2 PO 4 ] The molar ratio is 1:1.1, the reaction temperature is 50°C, and the reaction time is 4h.

[0051] S102: Separating the product obtained in S102, followed by ...

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Abstract

The invention relates to an ionic liquid catalyst system used for bisphenol-A synthesis and a preparation method of the ionic liquid catalyst system. The ionic liquid catalyst system is prepared fromthiol-functional ionic liquid and sulfated acidic ionic liquid according to the molar ratio of 1:(20-80). A synthesis method of bisphenol-A comprises the steps that phenol and acetone are evenly mixedaccording to a preset molar ratio, and a mixed reaction liquid is obtained; the ionic liquid catalyst system is added for reacting, reaction products are separated and then dehydrated, crystallized,washed, filtered, fused and crystallized, and the target product bisphenol-A is obtained. According to the ionic liquid catalyst system, through the cooperative effect of the main catalyst sulfated acidic ionic liquid and the assistant catalyst thiol-functional ionic liquid, the speed of a condensation reaction in the bisphenol-A synthesis process is obviously increased, and the acetone conversionrate and the bisphenol-A selectivity are improved; the whole synthesis process is environmentally friendly, the device cannot be corroded, and meanwhile, other volatile organic solvents are preventedfrom being used.

Description

technical field [0001] The invention relates to the technical field of bisphenol A synthesis, in particular to an ionic liquid catalyst system for bisphenol A synthesis and a preparation method thereof. Background technique [0002] Bisphenol A is a phenol derivative, also known as BPA, which is formed by condensation of two molecules of phenol and one molecule of acetone through acidic catalysts such as sulfuric acid, hydrogen chloride and ion exchange resin. As one of the most widely used industrial compounds in the world, its current demand is growing rapidly, and it is mainly used in the production of polycarbonate, epoxy resin, polysulfone resin, polyphenylene ether resin and unsaturated polyester resin, etc. Molecular materials; in addition, it can also be used to produce fine chemical products such as plasticizers, flame retardants, antioxidants, heat stabilizers, rubber antioxidants, pesticides, and coatings. [0003] In the traditional industry, the production of b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J31/02C07C37/20C07C39/16
CPCB01J31/0281B01J31/0285B01J31/0298C07C37/20C07C39/16
Inventor 殷鹏刚史吉华
Owner PUYANG SHENGTONGJUYUAN ADVANCED MATERIALS CO LTD
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