A kind of titanium silicon molecular sieve catalyst, preparation method and application thereof

A technology of titanium-silicon molecular sieves and catalysts, which is applied in molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve problems such as difficulty in meeting requirements, and achieve low production costs, simplified operation processes, and simple processes.

Active Publication Date: 2011-11-30
CHINA PETROLEUM & CHEM CORP +1
View PDF12 Cites 27 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Mix TS-1 titanium silicate molecular sieve, nano-alumina, aluminum sol, porogen, extrusion aid and water to obtain a moldable product, extrude the moldable product with an extruder to obtain a wet strip-shaped product, dry and roast The extruded strip shaped body can be used to obtain a shaped catalyst, and the epoxidation reaction of 3-chl

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
  • A kind of titanium silicon molecular sieve catalyst, preparation method and application thereof
  • A kind of titanium silicon molecular sieve catalyst, preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0015] In the preparation method of the catalyst provided by the present invention, said aluminum hydroxide powder is pure aluminum hydroxide powder, that is, aluminum hydroxide powder does not contain other elements except aluminum, hydrogen and oxygen under the situation of disregarding impurity elements , its alumina content is 50-80%, and its BET specific surface area is 350-700m 2 / g.

[0016] Said aluminum sol is preferably acidic aluminum sol, and its alumina content is 10%-35%, preferably 15-30%.

[0017] The mass ratio of said aluminum hydroxide powder to aluminum sol is 1-3:1, preferably 1.2-2.0:1 in terms of alumina.

[0018] The porogen is selected from alkylphenol polyoxyethylene ethers, the alkyl carbon number of which is 6-12, preferably 8-10, and the degree of polymerization is 10-30, preferably 12-24. The most commonly used alkylphenol The polyoxyethylene ether used as porogen is octylphenol polyoxyethylene (15) ether. Said extruding aid is selected from on...

Embodiment 1

[0056] 175.00 grams of HTS raw powder and 152.13 grams of aluminum hydroxide powder (produced by Shandong Zibo Taiguang Chemical Co., Ltd., with an alumina content of 71.9% and a BET specific surface area of ​​358m 2 / g), 70.00 gram of starch and 12.10 gram of asparagus powder (produced by Henan Lankao Vegetable Gum Factory) were stirred and mixed in the kneader for 20min; Co., Ltd.), 14.15 grams of octylphenol polyoxyethylene (15) ether (OP-15, produced by Hebei Xingtai Kewang Chemical Auxiliary Co., Ltd.) and 15.00 grams of deionized water were kneaded into agglomerates, and the starch in the kneaded The total mass of safflower powder and OP-15 is 55.0% of the original powder quality of HTS, continue kneading for 70min to obtain an extrudable plastic molded body; use a twin-screw extruder to extrude into wet Slender solid cylindrical strips are placed in a box-type resistance furnace after airing at room temperature for 24 hours, heated from room temperature to 120°C at a hea...

Embodiment 2

[0060] 210.00 grams of HTS raw powder and 112.90 grams of aluminum hydroxide powder (produced by Shandong Zibo Taiguang Chemical Co., Ltd., with an alumina content of 71.9% and a BET specific surface area of ​​358m 2 / g), 113.75 gram of starch and 8.75 gram of asparagus powder (produced by Henan Lankao Vegetable Gum Factory) were stirred and mixed in the kneader for 30min; Co., Ltd.), 17.50 grams of octylphenol polyoxyethylene (15) ether (OP-15, produced by Hebei Xingtai Kewang Chemical Auxiliary Co., Ltd.) and 21.00 grams of deionized water were kneaded into agglomerates, and the starch in the kneaded The total mass of safflower powder and OP-15 is 66.7% of the original powder quality of HTS, continue kneading for 90min to obtain extrudable plastic molded body; use twin-screw extruder to extrude wet Slender solid cylindrical strips are placed in a box-type resistance furnace after airing at room temperature for 36 hours, heated from room temperature to 120°C at a heating rate...

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
Lengthaaaaaaaaaa
Login to view more

Abstract

The invention discloses a titanium silicalite molecular sieve catalyst, which comprises 40 to 65 mass percent of titanium silicalite molecular sieve with a melt flow index (MFI) topological structure and 35 to 60 mass percent of aluminum oxide, wherein the aluminum oxide is made from aluminum hydroxide powder and aluminasol, and the side pressure breaking strength is 70 to 150N/cm. The catalyst is prepared by mixing the titanium silicalite molecular sieve with the MFI topological structure, aluminum hydroxide powder, aluminasol, a pore-forming agent, an extrusion assistant and water, kneading to obtain a formable plastomer, extruding the formable material in a strip extruder to form wet strip formed bodies, and drying and roasting the extruded strip formed bodies, wherein the total mass of the pore-forming agent and the extrusion assistant is 15 to 75 percent based on the mass of the titanium silicalite molecular sieve powder; and based on aluminum oxide, the mass ratio of the aluminum hydroxide powder to the aluminasol is (1-3):1. The catalyst is particularly suitable for catalyzing the epoxidation of 3-chloropropene and hydrogen peroxide for preparing epoxy chloropropane in a fixed bed reactor.

Description

technical field [0001] The invention relates to a high-strength titanium-silicon molecular sieve catalyst, its preparation method and its application in the epoxidation reaction of 3-chloropropene and hydrogen peroxide. Background technique [0002] U.S. Patent No. 4,833,260 discloses the highly selective synthesis of rings by the epoxidation of 3-chloropropene with hydrogen peroxide in the presence of a titanium-silicon molecular sieve (TS-1) catalyst with MFI topology and solvent methanol Oxychlorohydrin method to realize greening of epichlorohydrin synthesis process. Wherein said TS-1 catalyst can be TS-1 raw powder, also can be shaped TS-1 catalyst. When the original powder catalyst is used, it is very difficult to separate the catalyst from the liquid reaction product because its average particle diameter is only about 0.2 μm. [0003] The method to solve the difficulty in separating the titanium-silicon molecular sieve raw powder catalyst from the liquid product is t...

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): B01J29/89C07D303/08C07D301/12
Inventor 张永强刘易杜泽学
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