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

Method for regulating pore size of molecular sieve and application thereof

A molecular sieve and pore size technology, which is applied in the field of porous materials, can solve the problems that the size of the molecular sieve pores cannot meet the requirements of natural gas for helium extraction, cannot effectively separate helium and hydrogen, and takes a long time to synthesize molecular sieves. overly good effect

Pending Publication Date: 2021-06-04
ENERGY RES INST OF SHANDONG ACAD OF SCI
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the inventors have found that the pore size of the synthesized molecular sieve cannot meet the purpose of extracting helium from natural gas. The main reason is that the molecular sieve has a large pore size and cannot effectively separate components such as helium and hydrogen.
In addition, the synthesis of molecular sieves takes a long time and the extraction efficiency is low

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 regulating pore size of molecular sieve and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0072] (1) Weigh 1 gram of 100-120 mesh 3A molecular sieve and place it in the cavity of molecular layer deposition. Keep the temperature of the cavity at 100°C, and pulse titanium tetrachloride with a pulse time of 0.3s. The titanium tetrachloride was held in the chamber for 60 seconds after the pulse was completed, and then purged with nitrogen for 60 seconds. Then, pulse ethylene glycol into the cavity with a pulse time of 0.3 s. Ethylene glycol was kept in the chamber for 60 seconds after the pulse was completed, and then purged with nitrogen for 60 seconds. Repeat the above process 30 times.

[0073] (2) The material obtained in step (1) is placed in a tube furnace, and pure oxygen is passed through, and the flow rate is controlled to be 60 mL / min. The temperature was raised to 200°C at 2°C / min for 60 minutes and then to 500°C at 0.5°C / min for 4 hours.

[0074] (3) The material obtained in step (2) is placed in the cavity of atomic layer deposition. Keep the temperat...

Embodiment 2

[0077] The method for regulating the pore size of the molecular sieve is the same as that of Example 1, except that 4A molecular sieve is selected.

Embodiment 3

[0079] The method for regulating the pore size of the molecular sieve is the same as in Example 1, except that 5A molecular sieve is selected.

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 the field of porous materials, in particular to a method for regulating the pore size of a molecular sieve and application thereof. The method for regulating the pore size of the molecular sieve comprises the following steps: 1) depositing a titanium-alcohol polymer on the surface of the molecular sieve; 2) roasting the molecular sieve modified by the titanium-alcohol polymer in the step 1); 3) depositing titanium dioxide on the molecular sieve obtained in the step 2); depositing titanium-alcohol polymers at molecular sieve orifices and on the surface by using a chemical deposition technology to block the molecular sieve orifices; after roasting, decomposing the titanium-alcohol polymer to expose part of orifices; depositing titanium dioxide on the surface of the molecular sieve by using a chemical deposition method to further modulate the aperture of the molecular sieve. The pore size of the molecular sieve can be precisely regulated and controlled from an atomic level by utilizing the chemical deposition technology.

Description

technical field [0001] The invention relates to the field of porous materials, in particular to a method for regulating the pore size of a molecular sieve and an application thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] Helium is a rare gas with special physical properties and important uses. It has important uses in low temperature, superconductivity, aerospace, submarine, ocean development, shielded welding, laser, medicine and other fields. One of the indispensable important gases. [0004] At present, the methods for extracting helium from natural gas mainly include adsorption method, absorption method, diffusion method, membrane permeation method, and low...

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): C01B39/14C01B37/00C01B39/00C01B23/00
CPCC01B39/00C01B37/00C01B39/14C01B23/0057C01B39/026
Inventor 朱地徐丹王树元赵保峰宋安刚关海滨
Owner ENERGY RES INST OF SHANDONG ACAD OF SCI
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