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Catalyst for synthesizing 1, 4-cyclohexanedimethanol and preparation method of catalyst

A technology of cyclohexanedimethanol and catalyst, which is applied in the preparation of organic compounds, chemical instruments and methods, preparation of hydroxyl compounds, etc., and can solve the problems of short service life of catalysts, etc.

Inactive Publication Date: 2015-04-29
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] One of the technical problems to be solved by the present invention is the short service life of the catalyst in the prior art

Method used

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  • Catalyst for synthesizing 1, 4-cyclohexanedimethanol and preparation method of catalyst
  • Catalyst for synthesizing 1, 4-cyclohexanedimethanol and preparation method of catalyst

Examples

Experimental program
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Effect test

Embodiment 1

[0023] Carrier CAl 2 o 3 The preparation method is as follows: Take 50g Al 2 o 3- , and then follow the glucose and Al 2 o 3 The mass ratio of 0.65:1 prepares 100ml aqueous glucose solution, and 50g Al 2 o 3 And 1.5g of boric acid was added therein and soaked for 12h. After impregnation, dry in a vacuum oven at 90°C for 3h, and then bake at 500°C for 3h under the protection of nitrogen atmosphere to obtain the carrier CB-Al 2 o 3 , its carbon content was determined to be 10.1wt%, and its boron content was 0.42wt%.

[0024] Catalyst preparation method is as follows: 4.53gRuCl 3 ·3H 2 O was dissolved in 50ml of deionized water, then 3.91g of SnCl was added 2 2H 2 O dissolved, then add 35g carrier CB-Al 2 o 3 and 0.35 g of lauryl polyoxyethylene (10) ether were stirred evenly, left to age for 15 hours, and dried at 90° C. for 2 hours to obtain a catalyst precursor. The resulting precursor was then reduced for 3 hours in hydrogen diluted 7.5 times with nitrogen, the...

Embodiment 2-5

[0031] Change the input amount of boric acid to be 0.65g, 1.0g, 1.65g and 1.98g successively, and all the other operations are the same as embodiment 1. For convenience of comparison, the key experimental conditions used in each embodiment, the obtained catalyst composition and the catalyst evaluation obtained 1,4- The yields of cyclohexanedimethanol are listed in Table 1.

Embodiment 6

[0033] Carrier CAl 2 o 3 The preparation method is as follows: Take 50g Al 2 o 3- , and then follow the glucose and Al 2 o 3 The mass ratio of 0.65:1 prepares 100ml aqueous glucose solution, and 50g Al 2 o 3 Add it and soak for 12h. After impregnation, dry in a vacuum oven at 90°C for 3h, and then bake at 500°C for 3h under the protection of nitrogen atmosphere to obtain the carrier CAl 2 o 3, its carbon content was determined to be 10.1wt%.

[0034] Catalyst preparation method is as follows: 4.53gRuCl 3 ·3H 2 O was dissolved in 50ml of deionized water, then 3.91g of SnCl was added 2 2H 2 O dissolved, then add 35g carrier CAl 2 o 3 and 0.35 g of lauryl polyoxyethylene (10) ether were stirred evenly, left to age for 15 hours, and dried at 90° C. for 2 hours to obtain a catalyst precursor. The resulting precursor was then reduced for 3 hours in hydrogen diluted 7.5 times with nitrogen, the reduction temperature was 500°C, the hydrogen flow rate was 120ml / min, and ...

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Abstract

The invention relates to a catalyst for synthesizing 1, 4-cyclohexanedimethanol by using 1,4-cyclohexanedicarboxylic acid through hydrogenation, a preparation method of the catalyst and a method for synthesizing 1, 4-cyclohexanedimethanol in order to mainly solve the problem of short service life of the catalyst in the prior art. The problem is better solved through the technical scheme that the catalyst for synthesizing 1, 4-cyclohexanedimethanol comprises active components Ru and Sn and a carrier C@Al2O3, wherein the catalyst contains 1-10wt% of Ru, the mass ratio of Ru to Sn is 1: (0.5-2), and the carrier contains 1-20wt% of C. The catalyst can be used for industrial production of 1, 4-cyclohexanedimethanol prepared by using 1, 4-cyclohexanedicarboxylic acid through hydrogenation.

Description

[0001] technical field [0002] The invention relates to a catalyst for preparing 1,4-cyclohexanedimethanol through hydrogenation of 1,4-cyclohexanedicarboxylic acid, a preparation method of the catalyst and a synthesis method of 1,4-cyclohexanedimethanol. Background technique [0003] 1,4-Cyclohexanedimethanol is an important organic chemical raw material for the production of polyester resin. The polyester resin produced by it instead of ethylene glycol or other polyols has good thermal stability and thermoplasticity, and can be used at higher temperatures Maintain stable physical and electrical properties under low conditions, while products made from this type of resin have good chemical resistance and environmental resistance. At present, the industrial production process of 1,4-cyclohexanedimethanol mainly uses dimethyl terephthalate as raw material, firstly hydrogenates benzene ring to prepare dimethyl 1,4-cyclohexanedicarboxylate, and then hydrogenates the ester The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J23/62C07C29/149C07C31/27
Inventor 朱庆才畅延青陈大伟
Owner CHINA PETROLEUM & CHEM CORP
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