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Catalyst for producing cyclohexylbenzene

A cyclohexylbenzene and catalyst technology, applied in the field of catalysts for cyclohexylbenzene production, can solve the problems of low yield of cyclohexylbenzene, high yield of cyclohexylbenzene, low yield of cyclohexane, etc., and reduce the yield. rate, the effect of increasing the yield

Active Publication Date: 2018-04-03
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems to be solved by this invention is the high yield of the by-product cyclohexane and the low yield of the main product cyclohexylbenzene in the prior art, provide a catalyst for the production of cyclohexylbenzene, use it When benzene and hydrogen react to synthesize cyclohexylbenzene, it has the advantages of low yield of cyclohexane and high yield of cyclohexylbenzene

Method used

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  • Catalyst for producing cyclohexylbenzene
  • Catalyst for producing cyclohexylbenzene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1. Catalyst preparation

[0041] Weigh PdCl containing Pd 1.9g 2 Be dissolved in 1mol / L hydrochloric acid aqueous solution and be made into 80g solution I; Measure 0.1L diameter to be 1mm, length 5mm non-binding cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / alumina is 40); The solution I was loaded on the hydrogen-type BEA zeolite molecular sieve, impregnated at room temperature for 12 hours, dried at 100°C for 12 hours, and calcined at 450°C for 4 hours to prepare the desired catalyst.

[0042] 2. Catalyst evaluation

[0043] Get 10ml catalyst packing in the fixed-bed reactor, carry out activity evaluation after reduction activation, condition is as follows: the temperature of reaction is 150 ℃, and the mol ratio of benzene and hydrogen in the reaction raw material is 0.8, and the pressure of reaction is 2.0MPa (gauge pressure) , the liquid volume space velocity of the reacted raw material benzene is 0.5h -1 .

[0044] For ...

Embodiment 2

[0070] 1. Catalyst preparation

[0071] Weigh PdCl containing Pd 0.3g 2 Dissolve in 1mol / L hydrochloric acid aqueous solution and be made into 40g solution I; Nd(NO 3 ) 3 ·6H 2 O is dissolved in water to make 20g solution II; weigh Cu(NO 3 ) 2 ·3H 2 O is dissolved in water and is made into 20g solution III; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / aluminum oxide is 40), solution I, Solution II and solution III were mixed and then loaded onto hydrogen-type BEA zeolite molecular sieves, impregnated at room temperature for 12 hours, dried at 100°C for 12 hours, and calcined at 450°C for 4 hours to prepare the desired catalyst.

[0072] 2. Catalyst evaluation

[0073] Catalyst evaluation method see embodiment 1.

[0074] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.

Embodiment 3

[0076] 1. Catalyst preparation

[0077] Weigh PdCl containing Pd 0.3g 2 Dissolve in 1mol / L hydrochloric acid aqueous solution and be made into 40g solution I; Take the Eu(NO 3 ) 3 ·6H 2 O is dissolved in water to make 20g solution II; weigh Cu(NO 3 ) 2 ·3H 2 O is dissolved in water and is made into 20g solution III; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / aluminum oxide is 40), solution I, Solution II and solution III were mixed and then loaded onto hydrogen-type BEA zeolite molecular sieves, impregnated at room temperature for 12 hours, dried at 100°C for 12 hours, and calcined at 450°C for 4 hours to prepare the desired catalyst.

[0078] 2. Catalyst evaluation

[0079] Catalyst evaluation method see embodiment 1.

[0080] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.

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Abstract

The invention relates to a catalyst for producing cyclohexylbenzene, a preparation method of the catalyst and a method for synthesizing cyclohexylbenzene by a benzene hydroalkylation one-step method,and mainly solves the technical problems that in the prior art, the yield of the by-product cyclohexane is high and the yield of cyclohexylbenzene is low in the reaction of the catalyst in the prior art. According to the invention, the catalyst used for cyclohexylbenzene production is adopted, wherein the catalyst comprises a carrier and the following active components: (1) 0.5g-20 g / L of Pd; (2)0-50 g / L of at least one element selected from lanthanide elements; (3) 0-30 g / L of at least one element selected from group IB elements; the carrier is a hydrogen type zeolite molecular sieve. According to the technical scheme, the good effect is achieved, and the catalyst can be used for preparing cyclohexylbenzene by a benzene hydroalkylation one-step method.

Description

technical field [0001] The invention relates to a catalyst for the production of cyclohexylbenzene, a preparation method thereof and a method for synthesizing cyclohexylbenzene by one-step hydroalkylation of benzene. Background technique [0002] Cyclohexylbenzene is an important intermediate widely used in liquid crystal, plastics, coatings, adhesives and other fields. Cyclohexylbenzene liquid crystal has the characteristics of extremely high chemical stability, photochemical stability, low viscosity and excellent physical properties, and is one of the ideal materials for display devices. Cyclohexylbenzene is used as an additive for lithium-ion battery electrolyte, has anti-overcharge performance, and can improve the safety performance of the battery. In addition, phenol and cyclohexanone can be prepared through the peroxidation and decomposition reaction process of cyclohexylbenzene, which are used to produce bulk chemical raw materials such as phenolic resin, caprolactam...

Claims

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Application Information

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IPC IPC(8): B01J29/74B01J29/76C07C2/66C07C13/28C07C5/10C07C13/18
CPCB01J29/7415B01J29/7615B01J2229/18C07C2/66C07C5/10C07C2523/10C07C2523/44C07C2523/72C07C2529/74C07C2529/76C07C13/28C07C13/18
Inventor 刘仲能韩亚梅王德举郭友娣钱斌
Owner CHINA PETROLEUM & CHEM CORP
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