Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Catalyst for producing alkyl benzene

A catalyst and alkylbenzene technology, applied in the field of catalysts for the production of alkylbenzene, can solve problems such as high reaction temperature, high benzene-to-hydrocarbon ratio, and low olefin space velocity

Active Publication Date: 2008-06-04
CHINA PETROLEUM & CHEM CORP +1
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The technical problem to be solved by the present invention is that the catalysts in the prior art have the problems of high reaction temperature, high benzene-to-hydrocarbon ratio, and low olefin space velocity, and a new catalyst for producing alkylbenzene is provided

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
  • Catalyst for producing alkyl benzene

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Mix 1500 grams of water glass (modulus = 2.8) with 500 grams of hexamethyleneimine evenly, mix 50 grams of sodium aluminate and 25 grams of sodium hydroxide in 500 grams of water, and stir the above two solutions vigorously Mix evenly, continue to stir for 2 hours, add 500 g of water and stir for 1 hour, age the above mixed solution at 10°C for 100 hours to form a jelly, and set aside.

Embodiment 2

[0031] Dissolve and mix 25 grams of sodium aluminate and 20 grams of sodium hydroxide in 500 grams of water, add 500 grams (40% by weight) of colloidal silica and stir, then add 800 grams of pure water and stir and mix, add the mixture prepared in Example 1 50 g of sol was transferred to a crystallization tank after continuing to stir for 2 hours, stirred and crystallized at 165°C for 100 hours, filtered and washed until pH = 8, and dried at 150°C. The specific surface area of ​​the obtained sample was 550 m 2 / g, the pore volume is 0.5 ml / g, the XRD diffraction data are shown in Table 1, and the XRD diffraction pattern is as follows figure 1 shown.

[0032] Table 1 XRD diffraction data

[0033] 2θ diffraction angle

[0034] Take 100 grams of the crystalline aluminosilicate material synthesized above, add 0.5 mol / L ammonium nitrate solution, heat up to 95°C for 2 hours, and repeat the exchange 6 times, so that the alkali metal ion content in the crystalline alumino...

Embodiment 3

[0036] The catalyst prepared in Example 2 was pulverized into 20-60 mesh particles, and 1.0 g of the catalyst was carried out in a fixed-bed reactor for liquid-phase alkylation of propylene. The reaction conditions were: propylene space velocity=1.5 hours -1 , reaction temperature=140 DEG C, reaction pressure=2.5MPa, reaction product is cumene, propylene conversion rate=100%, product selectivity 99.2%, total benzene / olefin molar ratio is 2.1, no catalyst activity is observed in reaction 2000 hours loss, the export cumene concentration reaches 44%.

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
specific surface areaaaaaaaaaaa
specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a catalyst to produce alkyl benzene which mainly resolves the problem that catalyst exists high reacting temperature, high benzene hydrocarbon rate and low olefin speed. It adopts crystalline alumanosilicate of XRD diffracting data as catalyst active main body which can be used in the industrial production of alkyl benzene.

Description

technical field [0001] This invention relates to catalysts for the production of alkylbenzenes. Background technique [0002] Alkylbenzene is an important basic organic chemical raw material, including cumene, ethylbenzene, butylbenzene and long-chain alkylbenzene. Among them, cumene is an important intermediate raw material for the production of phenol, acetone and α-methylstyrene. At present, more than 90% of phenol in the world is produced by the cumene method. The traditional methods of producing alkylbenzenes in industry include the solid phosphoric acid method (SPA method) of Universal Oil Company (UOP) and the improved AlCl method of Monsanto / Lummus Crest Company. 3 Law. The operating conditions of SPA are harsh, and there are many impurities, so the yield of alkylbenzene cannot be increased by anti-alkylation. while AlCl 3 Although the method has relatively mild reaction conditions and can increase the yield of alkylbenzenes through anti-alkylation, the catalyst...

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): B01J29/06C07C15/02
Inventor 周斌高焕新方华顾瑞芳
Owner CHINA PETROLEUM & CHEM CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com