Unlock instant, AI-driven research and patent intelligence for your innovation.

Method for preparing uniform nanometer molecular sieve material with high catalytic activity

A nano-molecular sieve and high catalytic activity technology, which is applied in the direction of molecular sieve catalysts, chemical instruments and methods, physical/chemical process catalysts, etc., can solve the problems of reactant adjustment and precise adjustment of molecular sieve precursor concentration, low specific surface area of ​​molecular sieves, etc.

Inactive Publication Date: 2007-05-02
BC P INC CHINA NAT PETROLEUM CORP +1
View PDF5 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area of ​​the prepared ZSM-5 is lower than 440m 2 / g, and the adjustment of reactants and the precise adjustment of the concentration of molecular sieve precursors in the synthesis are all difficult to synthesize
Due to the relatively low specific surface area of ​​the prepared molecular sieve, it still has many shortcomings in industrial applications.

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 preparing uniform nanometer molecular sieve material with high catalytic activity
  • Method for preparing uniform nanometer molecular sieve material with high catalytic activity
  • Method for preparing uniform nanometer molecular sieve material with high catalytic activity

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0007] Embodiment 1: Preparation of uniform nanometer molecular sieve ZSM-5

[0008] Using butyl orthosilicate as a silicon source and TPAOH as a template to synthesize the traditional ZSM-5 ingredient Al 2 o 3 / SiO 2 / template / H 2 The O molar ratio is 1.0 / 30 / 8 / 375. First, the template agent is dissolved in water, and then aluminum source and silicon source are added thereto. After the solution is stirred and clarified, NaOH is added to it to make it fully hydrolyzed, so that the pH value is 7-9. The obtained sol was hydrothermally synthesized at 140°C for 3 hours to become a clear sol, and the synthesized sol and polymer beads were mixed and stirred for 8 hours and filled into a kettle, hydrothermally synthesized for 4 days, the samples were washed and dried, and finally started at 25°C to The temperature is raised to 550°C at a speed of 1°C / min and calcined for 8-10 hours.

[0009] The uniform particle size of the sample is about 200nm, and the position of the XRD spec...

Embodiment 2

[0011] Embodiment 2: the preparation of the nanometer TS-1 molecular sieve of uniform high specific surface area

[0012] Use butyl titanate as the titanium source, use butyl orthosilicate as the silicon source, and use TPAOH as the template. Ingredients by molar ratio (TiO 2 / SiO 2 / TPAOH / C 2 h 5 OH / H 2 (0=1.0 / 30 / 8 / 120 / 375). Process is also substantially the same as in Example 1. The prepared titanium-silicon molecular sieve TS-1 containing Ti has roughly the same specific surface area and particle size. In addition, it can be seen from the ultraviolet-visible spectrum (Figure-4) that the four-coordinated species of Ti in our synthesized sample is the main coordination form. At the same time, the reactivity of the uniform nano-TS-1 we synthesized is also better than that of the traditional TS-1, as shown in Figure-5 and Figure-6. Figure-5 shows that the initial reaction speed of nano TS-1 is faster than that of traditional TS-1 when the amount of catalyst is used norma...

Embodiment 3

[0013] Embodiment 3: the preparation of the nano Beta molecular sieve of uniform high specific surface area

[0014] Using butyl orthosilicate as the silicon source and TEAOH as the template to synthesize the traditional ingredient Al 2 o 3 / SiO 2 / template / H 2 The O molar ratio is 1.0 / 30 / 8 / 375. First, the template agent is dissolved in water, and then aluminum source and silicon source are added thereto. After the solution is stirred and clarified, NaOH is added to it to make it fully hydrolyzed, so that the pH value is 7-9. The obtained sol was hydrothermally synthesized at 140°C for 4.5 hours to become a clear sol. The synthesized sol and polymer beads were mixed and stirred for 8 hours for hydrothermal synthesis in a kettle for 1 day. Start to heat up to 550°C at a speed of 1°C / min for calcination for 8-10 hours. The particle size distribution of the prepared samples is about 200nm.

[0015] Invention effect

[0016] Compared with the background technology, the met...

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 present invention is the preparation process of homogeneous nano molecular sieve material with high catalytic activity, and belongs to the field of molecular sieve catalyst preparing technology in inorganic chemistry and physical chemistry. Compared with available technology, the method of the present invention has simple technological process and is suitable for industrial production, and the prepared nano molecular sieve has high homogeneity, great specific surface area and high catalytic activity and may be applied as adsorbent, catalyst and catalyst carrier in chemical industry.

Description

technical field [0001] The invention relates to a preparation method of uniform nanometer molecular sieve material with high catalytic activity, which belongs to the preparation method of molecular sieve catalyst related to the field of inorganic chemistry and physical chemistry. Background technique [0002] Since the successful synthesis of zeolite molecular sieves and their wide application in catalysis, people have been committed to enhancing the catalytic function of molecular sieves. One of the important aspects is to synthesize nano-molecular sieves with special functions. How to control the size and uniformity of nano-molecular sieves has always been an issue. The hotspots of people's research, the synthesis of ZSM-5 and TS-1 among these molecular sieves is more attractive, because they are used in many petrochemical and fine chemical industries such as catalytic cracking and environmentally friendly catalysis (using hydrogen peroxide to oxidize phenol to hydroquinone...

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): B01J29/89
Inventor 肖丰收阳晓宇方朝亮于建宁
Owner BC P INC CHINA NAT PETROLEUM CORP
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

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

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com