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Catalyst suitable for synthesis of cyclohexylbenzene and preparation method thereof

A synthesis method and technology of cyclohexylbenzene, applied in the direction of carbon compound catalysts, catalysts, molecular sieve catalysts, etc., can solve the problems of high yield of cyclohexylbenzene, low yield of cyclohexane, low yield of cyclohexylbenzene, etc., to achieve The effect of saving consumption

Active Publication Date: 2020-05-05
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, providing a catalyst suitable for the synthesis of cyclohexylbenzene, using 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 suitable for synthesis of cyclohexylbenzene and preparation method thereof
  • Catalyst suitable for synthesis of cyclohexylbenzene and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0053] Catalyst preparation: weigh PtCl containing 0.8g Pt 4 ·5H 2 O and Ni(NO 3 ) 2 ·6H 2 O is dissolved in 1mol / L acetic acid aqueous solution and is made into 80g solution I; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen-type BEA zeolite molecular sieve (silica / alumina molar ratio is 30) The above 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 obtain the desired catalyst.

[0054] Catalyst evaluation: 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 raw material benzene of reaction is 0.5h -1 .

[0055] The catalyst has a ...

Embodiment 2

[0057] Catalyst preparation: weigh RhCl containing 0.8g Rh 3 ·3H 2 O and Ni(NO 3 ) 2 ·6H 2 O is dissolved in 1mol / L acetic acid aqueous solution and is made into 80g solution I; Measure 0.1L diameter to be 1mm, length 5mm cylindrical hydrogen-type BEA zeolite molecular sieve (silica / alumina molar ratio is 30) The above 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 obtain the desired catalyst.

[0058] Catalyst evaluation: 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 raw material benzene of reaction is 0.5h -1 .

[0059] The Rh content of t...

Embodiment 3

[0061] Catalyst preparation: weigh PtCl containing 0.2g Pt 4 ·5H 2 O, RhCl containing 0.6g Rh 3 ·3H 2 O and Ni(NO 3 ) 2 ·6H 2 O is dissolved in 1mol / L acetic acid aqueous solution and is made into 80g solution; Measure 0.1L diameter and be 1mm, length 5mm non-binding cylindrical hydrogen type BEA zeolite molecular sieve (the mol ratio of silicon dioxide / alumina is 30); The above solution 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.

[0062] Catalyst evaluation: 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 raw mat...

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Abstract

The invention relates to a catalyst for cyclohexylbenzene synthesis, and a preparation method thereof, and a method for one-step synthesis of cyclohexylbenzene through benzene hydroalkylation. In theprior art, the yield of the by-product cyclohexane is high and the yield of the main product cyclohexylbenzene is low in the reaction due to the catalyst. A purpose of the present invention is mainlyto solve the technical problems in the prior art. The technical scheme of the present invention is that the catalyst for cyclohexylbenzene synthesis is used, and comprises a carrier and an active component supported on the carrier, the active component comprises a noble metal and nickel, the noble metal comprises at least one selected from platinum and rhodium, and the carrier is selected from a hydrogen-type zeolite molecular sieve. The obtained catalyst can be used for one-step preparation of cyclohexylbenzene through benzene hydroalkylation.

Description

technical field [0001] The invention relates to a catalyst suitable for synthesizing cyclohexylbenzene, a preparation method thereof and a method for synthesizing cyclohexylbenzene by one-step hydrogenation and alkylation 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 r...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/76C07C2/66C07C13/28C07C5/10C07C13/18
CPCB01J29/7615B01J2229/18C07C2/66C07C5/10C07C2523/42C07C2523/46C07C2523/755C07C2529/76C07C13/28C07C13/18
Inventor 韩亚梅刘仲能王德举刘师前
Owner CHINA PETROLEUM & CHEM CORP
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