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Catalyst for production of cyclohexylbenzene

A cyclohexylbenzene and catalyst technology, which is applied in the field of catalysts for the production of cyclohexylbenzene, can solve the problems of low yield of cyclohexylbenzene, high yield of cyclohexylbenzene, low yield of cyclohexane, etc., and achieve reduction of yield, 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 the present invention is the low yield of cyclohexylbenzene in the prior art, and a cyclohexylbenzene catalyst is provided, which has low yield of cyclohexane when it is used for the reaction of benzene and hydrogen to synthesize cyclohexylbenzene and the advantages of high yield of cyclohexylbenzene

Method used

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  • Catalyst for production of cyclohexylbenzene
  • Catalyst for production of cyclohexylbenzene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] 1. Catalyst preparation

[0038] Weigh out PdCl containing 1.3g Pd 2 Be dissolved in 1mol / L acetic acid aqueous solution and be made into 80g solution I; Measure 0.1L diameter and be 1mm, length 5mm non-bonding cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / aluminum oxide is 30); 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.

[0039] 2. Catalyst evaluation

[0040] 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 .

[...

Embodiment 2

[0055] 1. Catalyst preparation

[0056] Weigh out PdCl containing 0.3g Pd 2 Dissolve in 1mol / L acetic acid aqueous solution and be made into 40g solution I; Weigh the La(NO 3 ) 3 ·6H 2 O is dissolved in water and is made into 40g solution II; then solution I and solution II are mixed uniformly; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen type BEA zeolite molecular sieve (silica / alumina) The molar ratio is 30), the mixed solution is 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 required catalyst.

[0057] 2. Catalyst evaluation

[0058] Catalyst evaluation method see embodiment 1.

[0059] For the convenience of comparison, the composition of the catalyst is listed in Table 1, and the evaluation results are listed in Table 2.

Embodiment 3

[0061] 1. Catalyst preparation

[0062] Weigh out PdCl containing 0.3g Pd 2 Dissolve in 1mol / L acetic acid aqueous solution and be made into 40g solution I; Weigh the Pr(NO 3 ) 3 ·6H 2 O is dissolved in water and is made into 40g solution II; then solution I and solution II are mixed uniformly; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen type BEA zeolite molecular sieve (silica / alumina) The molar ratio is 30); the mixed solution is 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.

[0063] 2. Catalyst evaluation

[0064] Catalyst evaluation method see embodiment 1.

[0065] For the convenience of comparison, the composition of the catalyst is listed in Table 1, and the evaluation results are listed in Table 2.

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Abstract

The invention relates to a catalyst for production of cyclohexylbenzene, a preparation method thereof and a method of one-step synthesis of cyclohexylbenzene through hydroalkylation of benzene. The catalyst mainly solves the technical problems that yield of by-product cyclohexane is high and yield of main product cyclohexylbenzene is low in a reaction caused by a catalyst in the prior art. The catalyst for the production of cyclohexylbenzene comprises a carrier and active components, wherein the active components comprise 0.5-20g / L of at least one of platinum group elements, and the carrier ishydrogen-type zeolite molecular sieves. By employing the technical scheme, better effect is obtained, and the catalyst can be used to the one-step method of preparing cyclohexylbenzene through the hydroalkylation of benzene.

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): B01J29/74C07C2/74C07C2/66C07C13/28
CPCB01J29/74C07C2/66C07C2/74C07C5/10C07C5/11C07C13/28C07C13/20C07C13/23C07C13/18
Inventor 韩亚梅王德举刘仲能郭友娣任杰
Owner CHINA PETROLEUM & CHEM CORP
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