Composite acid supported catalyst and catalytic synthesis method of bisphenol F

A technology of supporting a catalyst and a composite acid is applied in the field of a composite acid supporting catalyst and catalyzing bisphenol, and the effect of good application prospect is achieved.

Inactive Publication Date: 2016-05-04
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The invention designs and synthesizes a novel composite acid-loaded catalyst, which adopts lithium chloride as a metal-organic framework and introduces phosphoric acid and titanium dioxide to make it, which greatly improves the performance of the catalyst. It is used in the synthesis of bisphenol F, which can increase the yield of the reaction and make it more efficient. The most important thing is to improve the selectivity of the reaction and save the cost; the catalyst has not been reported yet

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] Embodiment one: the synthesis of a kind of composite acid supported catalyst and catalyzed bisphenol F comprises the following process steps:

[0012] The synthesis step of composite acid supported catalyst: 85% phosphoric acid (10g) is joined in diatomite (100g), and the LiCl (2.2g) and titanium dioxide (1.0g) that add, add the ethanol of 0.5L, reflux and stir overnight (12 hours). After the reaction, ethanol was recovered by distillation, and the obtained solid matter was washed with water three times and dried in vacuum for 12 hours to obtain a composite acid-supported catalyst.

[0013] The specific steps for synthesizing bisphenol F: add phenol (10.0g, 106.3mmol) and a new composite acid-supported catalyst (3g) into a 250mL three-neck flask, add toluene, stir evenly at room temperature, and slowly add 37% formaldehyde aqueous solution dropwise (2.5 mL), heated to 100°C. The reaction time was 2 hours. The obtained reaction solution is first filtered to recover th...

Embodiment 2

[0014] Embodiment two: the synthesis of a kind of composite acid supported catalyst and catalyzed bisphenol F comprises the following process steps:

[0015] The synthetic steps of composite acid supported catalyst: 85% phosphoric acid (10g) is joined in diatomite (100g), and the LiCl (2.2g) that adds and titanium dioxide (2.0g), add the ethanol of 0.5L, reflux and stir overnight (12 hours). After the reaction, ethanol was recovered by distillation, and the obtained solid matter was washed with water three times and dried in vacuum for 12 hours to obtain a composite acid-supported catalyst.

[0016] The specific steps for synthesizing bisphenol F: add phenol (10.0g, 106.3mmol) and a new composite acid-supported catalyst (3g) into a 250mL three-neck flask, add toluene, stir evenly at room temperature, and slowly add 37% formaldehyde aqueous solution dropwise (2.5 mL), heated to 125°C. The reaction time was 4 hours. The obtained reaction solution is first filtered to recover ...

Embodiment 3

[0017] Embodiment three: the synthesis of a kind of composite acid supported catalyst and catalyzed bisphenol F comprises the following process steps:

[0018] The synthetic steps of composite acid supported catalyst: 85% phosphoric acid (10g) is joined in diatomite (100g), and the LiCl (2.2g) that adds and titanium dioxide (2.0g), add the ethanol of 0.5L, reflux and stir overnight (24 hours). After the reaction, ethanol was recovered by distillation, and the obtained solid matter was washed with water three times and dried in vacuum for 12 hours to obtain a composite acid-supported catalyst.

[0019] The specific steps for synthesizing bisphenol F: add phenol (10.0g, 106.3mmol) and new composite acid-loaded catalyst (3g) into a 250mL three-necked flask, add xylene, stir evenly at room temperature, and then slowly add 37% formaldehyde dropwise Aqueous solution (2.5 mL), heated to 150°C. The reaction time was 4 hours. The obtained reaction solution is first filtered to recov...

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PUM

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Abstract

The invention discloses a composite acid supported catalyst and a catalytic synthesis method of bisphenol F. A synthesis method of the composite acid supported catalyst comprises the following steps: adding phosphoric acid, diatomite, LiCl and titanium dioxide to ethanol according to a certain ratio, and refluxing and stirring above raw materials overnight (for 12-24h); and recovering ethanol after the above reaction ends, washing the obtained material with water 3 times, and carrying out vacuum drying for 12h to obtain the composite acid supported catalyst. The synthesis method of bisphenol F comprises the following steps: adding phenol and the composite acid catalyst to a reaction container, adding xylene, stirring above materials at room temperature, adding 37% of an aqueous formaldehyde solution in a dropwise manner, and heating the obtained solution to 100-150DEG C, wherein the temperatures are 100DEG C, 125DEG C and 150DEG C respectively, toluene is adopted as a solvent, and the reaction time is 2-8h; and recovering the catalyst, the solvent and phenol, and re-crystallizing the above obtained product with the recovered solvent to obtain pure bisphenol F. The catalyst has the advantages of increase of the bisphenol F yield, simple synthesis method, low cost, high catalysis activity and reusability.

Description

technical field [0001] The present invention relates to a compound acid-loaded catalyst and the synthesis of catalytic bisphenol F. The downstream products derived from bisphenol F are superior to similar products using bisphenol A as raw materials in many aspects, such as heat and humidity resistance, insulation, processing In terms of mechanical properties and other aspects, it can meet the performance requirements of flame-retardant materials, casting and casting molding, electronic-grade epoxy resin, and large-scale wind power epoxy resin. It has good application prospects and belongs to the field of chemical materials and pharmaceuticals. Background technique [0002] Bisphenol F (BPF) is an important chemical intermediate obtained by condensation reaction of phenol and formaldehyde through hydroxyalkylation, including 2,2'-bisphenol F, 2,4'-bisphenol F and 4,4'- There are three isomers of bisphenol F, among which 4,4'-bisphenol F isomer has the best performance. Bisph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J27/18C07C39/16C07C37/20
CPCY02P20/584
Inventor 王大伟余晓丽石刚葛晨阳
Owner JIANGNAN UNIV
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