Catalyst for catalyzing butadiene cyclization trimerization and application method thereof

A catalyst, butadiene technology, applied in the direction of organic compound/hydride/coordination complex catalyst, physical/chemical process catalyst, chemical instrument and method, etc., can solve the problem of low yield and low butadiene conversion rate , low selectivity, etc.

Inactive Publication Date: 2012-09-26
WUDI SINORANCE CHEM
View PDF0 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The technical problem to be solved by the present invention is the butadiene ring catalyzed by a very small amount of ZrCl4 and Ziegler-Natta catalyst in the prior art The selectivity of trans, trans, cis-1,5,9-cyclododecatriene is still low in the trimerization reaction, trans, trans, cis-1,5,9-cyclododeca

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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Toluene, zirconium naphthenate, titanium naphthenate and AlEt 3 After dehydration treatment, the water content is less than 10ppm. Butadiene was purified with base and 5A molecular sieves, AlEt 3 For industrial products.

[0023] 691g of toluene, 0.0388g of zirconium naphthenate, 9.133g of AlEt 3 , 32.454kg of butadiene and 3.662g of titanium naphthenate were sequentially added into the reactor, mixed and reacted at 30°C for 40 hours. The pH value of the reaction product is adjusted to be weakly acidic, and after the reaction product is settled to remove impurities, the butadiene trimer is obtained after being fractionated and refined by a fractionating tower.

[0024] The conversion rate of butadiene is 90%, and the obtained butadiene trimer is measured with a gas chromatographic analyzer to measure anti, trans, cis-1,5,9-cyclododecatriene content 97%.

Embodiment 2

[0026] Toluene, zirconium naphthenate, titanium naphthenate, and AlEtCl 2 After dehydration treatment, the water content is less than 10ppm. Butadiene was purified with base and 5A molecular sieves, AlEtCl 2 For industrial products.

[0027] 921g toluene, 0.1163g zirconium naphthenate, 21.12gAlEt 3 , 37.863kg of butadiene and 10.988g of titanium naphthenate were sequentially added into the reactor, mixed and reacted at 90°C for 20 hours. The pH value of the reaction product is adjusted to be weakly acidic, and after the reaction product is settled to remove impurities, the butadiene trimer is obtained after being fractionated and refined by a fractionating tower.

[0028] The conversion rate of butadiene is 92%, and the obtained butadiene trimer is measured with a gas chromatographic analyzer, and the trans, trans, cis-1,5,9-cyclododecatriene content is measured therein 97.2%.

Embodiment 3

[0030] Toluene, zirconium naphthenate, titanium naphthenate and AlEt 1.46 Cl 1.54 After dehydration treatment, the water content is less than 10ppm. Butadiene was purified with base and 5A molecular sieves, AlEt 1.46 Cl 1.54 For industrial products.

[0031] 750g toluene, 0.093g zirconium naphthenate, 15.14gAlEtCl 2 , 36.78kg of butadiene and 7.643g of titanium naphthenate were sequentially added into the reactor, mixed and reacted at 40°C for 30 hours. The pH value of the reaction product is adjusted to be weakly acidic, and after the reaction product is settled to remove impurities, the butadiene trimer is obtained after being fractionated and refined by a fractionating tower.

[0032] The conversion rate of butadiene is 91%, and the obtained butadiene trimer is measured with a gas chromatographic analyzer, and the trans, anti, cis-1,5,9-cyclododecatriene content is measured therein 97.5%.

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

No PUM Login to view more

Abstract

The invention relates to a catalyst for catalyzing butadiene cyclization trimerization and an application method thereof. The components of the catalyst include titanium naphthenate and AlRyZ3-y, wherein Z is a halogeno group, R is an alkyl group, and Y is more than 0 and less than or equal to 3; and the catalyst also includes a small amount of zirconium naphthenate. When the catalyst is used for catalyzing the butadiene cyclization trimerization, methylbenzene, the zirconium naphthenate, the AlRyZ3-y, the butadiene and the titanium naphthenate are added into a reaction kettle in sequence and then mixed; the mixture is reacted for 20-40 hours at the temperature of 30-90 DEG C to obtain a reaction product; and sedimentation, distillation and purification treatments are carried out on the reaction product to obtain a butadiene trimer. Through measuring, the conversion of the butadiene is 90-95%, and the content of trans, trans, cis-1,5,9-cyclododecatriene in the trimer is 99.99-100%.

Description

technical field [0001] The invention relates to a catalyst for catalyzing the cyclotrimerization reaction of butadiene and a use method thereof, belonging to the field of catalysts. Background technique [0002] Anti, anti, cis-1,5,9-cyclododecatriene is a macrocyclic intermediate with multiple uses, and it can be used to synthesize some valuable macrocyclic organic compounds and prepare musk, perfume, paint , adhesives, nylon and flame retardants and other chemical products, therefore, trans, trans, cis-1,5,9-cyclododecatriene is an indispensable raw material for the manufacture of industrial and daily products. The industrial preparation of trans, trans, cis-1,5,9-cyclododecatriene is generally made of butadiene as raw material, and Ziegler-Natta catalyst is used to catalyze the cyclotrimerization of butadiene. The cyclotrimerization products of butadiene are three different configurations of cyclododecatriene, and the Ziegler-Natta catalyst is effective for trans, trans,...

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
IPC IPC(8): B01J31/14C07C13/277C07C2/46
Inventor 秦如新
Owner WUDI SINORANCE CHEM
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap