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A kind of preparation method of hydrogenated bisphenol A

A technology for hydrogenating bisphenol and bisphenol is applied in hydrogenation preparation, chemical instruments and methods, catalyst activation/preparation, etc. Effect

Active Publication Date: 2021-07-27
CHANGZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Most of the existing research on the preparation technology of hydrogenated bisphenol A focuses on the development of hydrogenation catalysts, and the catalysts used in fixed bed hydrogenation are mainly noble metals such as Pd, Ru, Rh, etc. Based on research reports, mainly focus on reactor hydrogenation of batch method, there are not many reports on nickel catalyst used in fixed bed reaction

Method used

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  • A kind of preparation method of hydrogenated bisphenol A
  • A kind of preparation method of hydrogenated bisphenol A

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Effect test

Embodiment 1

[0026] Add 500ml of water and 100g of microsphere silica carrier into a 1L autoclave successively. After sealing, the temperature is raised to 160°C for 3 hours. When the temperature drops below 50°C, the material is filtered, the filter cake is collected, and dried. required carrier. The catalyst preparation is carried out in a closed reaction vessel according to the following steps. ①Preparation of nickel-ammonia solution: Slowly add ammonia solution dropwise to 500ml of 2M nickel nitrate solution to make the pH value 8.5 to prepare a clear nickel-ammonia complex solution with a nickel content of 16%. ② Impregnation: Take 80 g of the above-mentioned carrier and add it to the nickel-ammine complex solution of ①, control the temperature at 65°C, and keep the impregnation for 4 hours under the condition of a stirring pressure of -0.06MPa, and the impregnation is completed. ③Separation, drying, and calcination at 350°C for 5 hours to obtain a semi-finished catalyst. ④ 100 mL o...

Embodiment 2

[0028] Add 500ml of water and 100g of microsphere silica carrier into a 1L autoclave successively, seal and heat up to 120°C for 4 hours, filter the material after the temperature drops below 50°C, collect the filter cake, and dry to obtain required carrier. The catalyst preparation is carried out in a closed reactor according to the following steps. ①Preparation of nickel-ammonia solution: slowly add the ammonia solution dropwise to 500ml of 4M nickel nitrate solution to make the pH value 9.0 to prepare a clear nickel-ammonia complex solution with a nickel content of 18%. ② Impregnation: 80 g of the above-mentioned carrier was added to the nickel ammine complex solution of ①, the temperature was controlled at 80°C, and the immersion was completed under a stirring pressure of -0.08 MPa for 6 hours. ③Separate, dry, and calcinate at 500°C for 3 hours to obtain a semi-finished catalyst. ④ 100 mL of 0.04M manganese nitrate solution was evenly sprayed on the above-mentioned semi-...

Embodiment 3

[0030]Add 500ml of water and 100g of microsphere silica carrier into a 1L autoclave successively. After sealing, the temperature is raised to 180°C for 2 hours. When the temperature drops below 50°C, the material is filtered and dried to obtain the desired carrier. The catalyst preparation is carried out in a closed reactor according to the following steps. ①Preparation of nickel-ammonia solution: Slowly add ammonia solution dropwise to 500ml 3M nickel nitrate solution to make the pH value 10.0 to prepare a clear nickel-ammine complex solution with a nickel content of 19.8%. ② Impregnation: 80 g of the above-mentioned carrier was added to the nickel ammine complex solution of ①, the temperature was controlled at 60°C, and the stirring pressure was -0.05MPa for 3 hours, and the impregnation was completed. ③Separate, dry, and bake at 500°C for 3 hours. ④ 100 mL of 0.4M cobalt nitrate solution was evenly sprayed on the above-mentioned semi-finished catalyst, dried, and calcined ...

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Abstract

The invention discloses a method for preparing hydrogenated bisphenol A, which belongs to the field of hydrogenation of organic matter. Bisphenol A and a solvent are mixed and preheated and then put into a fixed-bed reactor together with hydrogen, and a nickel-based catalyst is used for hydrogenation reaction to generate hydrogenation Bisphenol A crude product. The nickel-based catalyst is Ni / SiO 2 or Ni / Al 2 o 3 , the nickel content of the catalyst is 15-45%, the preparation of the catalyst adopts the impregnation method, the process is simple, and it is easy for industrialization. The conversion rate of bisphenol A in the hydrogenation process reaches 100%, and the product selectivity is higher than 98.5%. At the same time, it can realize continuous production, and has the characteristics of good hydrogenation effect, high production efficiency, and convenient operation.

Description

technical field [0001] The invention belongs to the field of organic matter hydrogenation, relates to a preparation method of hydrogenated bisphenol A, and further relates to a catalyst for hydrogenation of bisphenol A and a preparation method thereof. Background technique [0002] Hydrogenated bisphenol A (HBPA for short) is an important raw material for the manufacture of epoxy resin, unsaturated resin, polycarbonate, polyacrylic resin and other synthetic materials. It has the advantages of thermal stability, chemical stability and weather resistance, and is widely used in . Especially in epoxy resin, it is an important means of epoxy resin modification. [0003] The preparation of hydrogenated bisphenol A takes bisphenol A as a raw material, and is formed by hydrogenation reaction under the action of a catalyst in a solution state. The preparation of hydrogenated bisphenol A belongs to the hydrogenation of aromatic compounds and belongs to the category of benzene ring h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C07C35/21C07C29/20B01J23/889B01J23/75B01J23/78B01J23/745B01J37/02B01J37/18
CPCB01J23/745B01J23/75B01J23/78B01J23/8892B01J37/0207B01J37/18C07C29/20C07C2601/14C07C35/21
Inventor 何明阳钱俊峰孙中华孙富安吴中陈群
Owner CHANGZHOU UNIV
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