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

Method for synthesizing TS-1 molecular sieve

A molecular sieve, TS-1 technology, applied in molecular sieve catalysts, chemical instruments and methods, crystalline aluminosilicate zeolites, etc., can solve the problems of high non-framework titanium content and poor oxidation activity, and overcome the decline in activity and synthesis cost. The effect of low and good catalytic activity stability

Active Publication Date: 2009-05-20
CHINA PETROLEUM & CHEM CORP +1
View PDF5 Cites 15 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved in the present invention is to overcome the shortcomings of high non-skeleton titanium content and poor oxidation activity in the TS-1 molecular sieve synthesized by the prior art, and provide a new method for synthesizing titanium-silicon molecular sieve (TS-1)

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
  • Method for synthesizing TS-1 molecular sieve
  • Method for synthesizing TS-1 molecular sieve
  • Method for synthesizing TS-1 molecular sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Add 120-200 mesh silica gel particles and tetrabutyl titanate to the aqueous solution of tetrapropyl ammonium hydroxide and stir well, wherein the silica gel particles (in the form of SiO 2 In terms of), tetrabutyl titanate (as TiO 2 The molar ratio of tetrapropylammonium hydroxide and water is 1:0.04:0.1:15, and then put into a stainless steel sealed reactor, and hydrothermally treat it at a temperature of 170° C. and autogenous pressure for 4 hours to obtain mixture a; 40- 80 mesh silica gel particles and tetrabutyl titanate were added to the aqueous solution of tetrapropyl ammonium hydroxide and stirred evenly, wherein the silica gel particles (using SiO 2 In terms of), tetrabutyl titanate (as TiO 2 The molar ratio of tetrapropylammonium hydroxide to water is 1:0.04:0.1:15. After the titanium source is hydrolyzed, add the above mixture a and mix evenly, wherein the amount of mixture a accounts for 25% of the total volume after mixing. , and then transferred to a st...

Embodiment 2

[0041] Add 80-120 mesh silica gel particles and tetrabutyl titanate to the aqueous solution of tetrapropyl ammonium hydroxide and n-butylamine and stir well, wherein the silica gel particles (as SiO 2 In terms of), tetrabutyl titanate (as TiO 2 The molar ratio of tetrapropylammonium hydroxide, n-butylamine and water is 1:0.01:0.2:0.1:25, then put into a stainless steel sealed reactor, and hydrothermally treat at 160°C for 6 hours under autogenous pressure to obtain Mixture a: 20-40 mesh silica gel particles and tetrabutyl titanate are added to the aqueous solution of tetrapropyl ammonium hydroxide and stirred evenly, wherein the silica gel particles (in the form of SiO 2 In terms of), tetrabutyl titanate (as TiO 2 The molar ratio of tetrapropylammonium hydroxide to water is 1:0.08:0.01:15. After the titanium source is hydrolyzed, add the above mixture a and mix evenly, wherein the amount of mixture a accounts for 50% of the total volume after mixing , and then placed in a st...

Embodiment 3

[0043] First mix 120-160 mesh silica gel particles with TiCl 4 Add to the aqueous solution of tetrapropyl ammonium hydroxide and diethanolamine and mix well, wherein the silica gel particles (as SiO 2 count), TiCl 4 , tetrapropylammonium hydroxide, diethanolamine and water in a mol ratio of 1:0.08:0.05:0.1:40, then put into a stainless steel sealed reaction kettle, and hydrothermally treat it for 9 hours at a temperature of 150° C. under autogenous pressure to obtain mixture a; Add 10-20 mesh silica gel particles and tetrabutyl titanate into the aqueous solution of tetrapropyl ammonium hydroxide and stir evenly, wherein the silica gel particles (in the form of SiO 2 In terms of), tetrabutyl titanate (as TiO 2 The molar ratio of tetrapropylammonium hydroxide to water is 1:0.1:0.1:50. After the titanium source is hydrolyzed, add the above mixture a and mix evenly, wherein the amount of mixture a accounts for 60% of the total volume after mixing. , and then placed in a stainle...

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
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
particle sizeaaaaaaaaaa
Login to View More

Abstract

A method for synthesizing a TS-1 molecular sieve comprises the steps that: (1) the aqueous solution of solid silica gel particles, titanium source and organo-alkali compound is mixed and treated with hydro-thermal treatment at 80-180 DEG C for 3-96 hours, wherein, the molar ratio of SiO2: TiO2: organo-alkali compound: water is 1: 0.001-0.5: 0.01-0.5: 5-100; (2) the aqueous solution of the solid silica gel particles, the titanium source and the organo-alkali compound is mixed until the titanium source is completely hydrolyzed; wherein, the molar ratio of SiO2: TiO2: organo-alkali compound: water is 1: 0.001-0.5: 0.001-0.80: 5-150; (3) the products obtained from step (1) and step (2) are mixed; and crystallization reaction is carried out by a conventional method to recover the product; wherein, the product of step (1) accounts for 10-80 percent. The method of the invention can synthesize the TS-1 molecular sieve with certain granularity, and the synthesized molecular sieve has low content of non-skeleton titanium and has high activity, stability and selectivity when being used in oxidation reaction.

Description

technical field [0001] The invention relates to a method for synthesizing titanium-silicon molecular sieve (TS-1) with MFI structure. Background technique [0002] Titanium silicate molecular sieve is a new type of heteroatom molecular sieve developed in the early 1980s. TS-1 with MFI structure, TS-2 with MEL structure, and TS-48 with larger pore structure have been synthesized so far. Among them, TS-1 molecular sieve is a molecular sieve with ZSM-5 structure containing transition metal element titanium in the framework, which has excellent performance in catalytic selective oxidation reaction, excellent stability and shape selection. TS-1 molecular sieve is used in the oxidation reaction of organic matter. It can use non-polluting low-concentration hydrogen peroxide as the oxidant, thereby simplifying the oxidation process and reducing environmental pollution. It has the incomparable advantages of energy saving, economy and environmental friendliness compared with traditio...

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 Applications(China)
IPC IPC(8): C01B39/08B01J29/89
Inventor 林民史春风朱斌舒兴田慕旭宏罗一斌汪燮卿汝迎春
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