Check patentability & draft patents in minutes with Patsnap Eureka AI!

Catalysts for Cyclohexylbenzene Synthesis

A cyclohexylbenzene and catalyst technology, applied in the directions of carbon compound catalysts, catalysts, molecular sieve catalysts, etc., can solve the problems of high yield of cyclohexylbenzene, low yield of cyclohexylbenzene, low yield of cyclohexane, etc. Yield, yield-reducing effect

Active Publication Date: 2020-01-03
CHINA PETROLEUM & CHEM CORP +1
View PDF10 Cites 0 Cited by
  • 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 by-product cyclohexane and the low yield of main product cyclohexylbenzene in the prior art, and a kind of catalyst for the synthesis of cyclohexylbenzene is provided, which will When it is used for the reaction of benzene and hydrogen to synthesize cyclohexylbenzene, it has the advantages of low yield of cyclohexane and high yield of cyclohexylbenzene

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Catalysts for Cyclohexylbenzene Synthesis
  • Catalysts for Cyclohexylbenzene Synthesis

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0035] 1. Catalyst preparation

[0036] Weigh PdCl containing Pd 1.5g 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.

[0037] 2. Catalyst evaluation

[0038] 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 .

[0039] For ...

Embodiment 2

[0059] 1. Catalyst preparation

[0060] Weigh PdCl containing Pd 0.3g 2 Dissolve in 1mol / L hydrochloric acid aqueous solution and be made into 40g solution I; Scale the Nd(NO 3 ) 3 ·6H 2 O and Eu(NO 3 ) 3 ·6H 2 O is dissolved in water and is made into 40g solution II; 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 and The solution II was mixed evenly and then 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.

[0061] 2. Catalyst evaluation

[0062] Catalyst evaluation method see embodiment 1.

[0063] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.

[0064] It can be known from Example 2 and Comparative Example 1 and Comparative Example 2 t...

Embodiment 3

[0066] 1. Catalyst preparation

[0067] Weigh PdCl containing Pd 0.3g 2 Dissolve in 1mol / L hydrochloric acid aqueous solution and be made into 40g solution I; Scale the Nd(NO 3 ) 3 ·6H 2 O and Dy(NO 3 ) 3 ·6H 2 O is dissolved in water and is made into 40g solution II; 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 and The solution II was mixed evenly and then 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.

[0068] 2. Catalyst evaluation

[0069] Catalyst evaluation method see embodiment 1.

[0070] For the convenience of comparison, the composition and evaluation results of the catalysts are listed in Table 1.

[0071] It can be seen from the comparison of Example 3 and Comparative Example 1 and Compar...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
densityaaaaaaaaaa
boiling pointaaaaaaaaaa
melting pointaaaaaaaaaa
Login to View More

Abstract

The invention relates to a catalyst for synthesis 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 synthesis of cyclohexylbenzene comprises a carrier and the following active components: (1) 0.5-20g / L of Pd; and (2) 0-40g / L of at least one of lanthanoid elements, wherein 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 synthesizing 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 and ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): B01J29/74C07C2/74C07C13/28
CPCB01J29/7415B01J2229/186C07C2/74C07C2529/74C07C13/28
Inventor 韩亚梅刘仲能王德举黄琴琴
Owner CHINA PETROLEUM & CHEM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com