Titanium-silicon molecular sieve and resin composite catalyst and preparation method thereof

A titanium-silicon molecular sieve and resin composite technology, which is used in catalyst activation/preparation, chemical instruments and methods, organic compound/hydride/coordination complex catalysts, etc. The technical process is cumbersome and unfavorable to industrial production, so as to reduce the occurrence of side reactions, improve the reaction efficiency, and alleviate the thermal effect.

Active Publication Date: 2011-05-11
CHINA PETROLEUM & CHEM CORP +1
View PDF2 Cites 19 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] CN1256274A has proposed the technology that titanium-silicon molecular sieve catalyzes propylene, hydrogen peroxide epoxidation to continuously produce propylene oxide, in this process, catalyzer exists with slurry state, although obtained better raw material conversion rate and product yield, but because catalyzer It is in a slurry state and needs to be separated from the product after the rea

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

Example Embodiment

[0033] Example 1

[0034] In the polymerization kettle, add 7.5g of titanium silicon molecular sieve powder, 90g of polymerized monomer styrene and 30g of divinylbenzene, 60g of pore-forming agent liquid wax, stir and mix well, and when the water bath is heated to 60℃, add the initiator peroxidation 1.5 g of benzoyl and a polymerization temperature of 90° C. for 6 hours to obtain a massive titanium silicate molecular sieve catalyst. Then it is crushed and granulated. After sieving, a catalyst with a suitable particle size is selected, 250 ml of 1,2-dichloroethane is added for swelling, and the swelling is performed at room temperature for 5 hours. After pouring out 1,2-dichloroethane, add 200ml ethyl acetate for solvent extraction. The extraction reaction temperature is 55°C and the extraction time is 4 hours. The same method is used for three extractions to obtain titanium silicon molecular sieve and resin composite Catalyst A, its physical and chemical properties are shown in ...

Example Embodiment

[0035] Example 2

[0036] In the polymerization kettle, add 15g of titanium silica molecular sieve powder, 90g of polymerized monomer styrene, 15g of divinyl toluene, 25g of divinyl xylene, and pore former C 5 After stirring and mixing 60 g of fatty alcohol uniformly, when the water bath is heated to 80° C., 2.0 g of the initiator azobisisobutanol is added, and the polymerization temperature is 100° C. for 6 hours to obtain a massive titanium silicon molecular sieve catalyst. Then it is crushed and granulated. After sieving, a catalyst with a suitable particle size is selected, 250 ml of 1,2-dichloroethane is added for swelling, and the swelling is performed at room temperature for 5 hours. After pouring out 1,2-dichloroethane, add 200ml of xylene for solvent extraction. The extraction reaction temperature is 55°C, the extraction time is 4 hours, and the same method is used for three extractions to obtain a titanium silicon molecular sieve and resin composite catalyst. B. See Tab...

Example Embodiment

[0037] Example 3

[0038] The weight of the titanium-silicon molecular sieve powder in Example 1 was changed to 30 g, the extraction solvent was changed to chloroform, and the rest was the same as in Example 1, to obtain a titanium-silicon molecular sieve and resin composite catalyst C. The physical and chemical properties are shown in Table 1.

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 discloses a titanium-silicon molecular sieve and resin composite catalyst and a preparation method thereof. The catalyst mainly comprises a titanium-silicon molecular sieve and resin. The preparation method comprises the following steps of: fully mixing titanium-silicon molecular sieve powder, a polymeric monomer and a porogen, performing polymerization reaction in the presence of an initiator to obtain a blocky solid catalyst, crushing, adding into halogenated hydrocarbon for swelling, and performing solvent extraction to obtain a formed catalyst. The catalyst prepared by the method solves the problem that titanium-silicon catalyst powder and reaction liquid are difficult to separate, improves reaction efficiency, is applied to the catalytic reaction process of olefin epoxidation in a fixed bed process, and has good catalytic effect.

Description

technical field [0001] The invention belongs to a composite catalyst of titanium-silicon molecular sieve and resin and a preparation method thereof, which is suitable for the fixed-bed catalytic reaction process of olefin epoxidation and the like. Background technique [0002] Since the Italian Enichem company first synthesized the lattice oxygen-selective titania-silicon molecular sieve catalyst TS-1 in 1983, it has become a hot spot in the research of oxidation catalysts due to its excellent oxidation selectivity and mild reaction conditions, and this discovery is regarded as environmentally friendly. A major breakthrough in catalyst development. [0003] Titanium-silicon molecular sieve catalysts play a very important role in the selective oxidation of organic compounds, such as the epoxidation of propylene with hydrogen peroxide under the action of titanium-silicon molecular sieve catalysts to prepare propylene oxide. In industrial applications, titanium-silicon molecul...

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): B01J31/38B01J31/06B01J37/00C07D301/12C07D303/04
Inventor 方向晨王海波勾连科黎元生宋丽芝艾抚宾
Owner CHINA PETROLEUM & CHEM CORP
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