Supercharge Your Innovation With Domain-Expert AI Agents!

Process for preparing mesoporous molecular sieve fibres

A mesoporous molecular sieve and fiber technology, which is applied in the direction of molecular sieve catalysts, molecular sieves and base exchange compounds, chemical instruments and methods, etc., can solve the problems of mesoporous molecular sieves being comparable, order and uniformity of pores, etc.

Inactive Publication Date: 2005-06-15
FUDAN UNIV
View PDF2 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the specific surface area, order and uniformity of pores are still not comparable to mesoporous molecular sieves.

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

Embodiment 1

[0016] Embodiment 1, 30g cetyltrimethylammonium bromide is dissolved in 4750g water, then adds 1625g hydrochloric acid solution (6mol / Kg), makes a clear and transparent solution A. Transfer solution A to a slender culture vessel, according to the mass ratio of tetrabutyl orthosilicate to solution A is 1 / 125, slowly add 51.25g of tetrabutyl orthosilicate to form an oil-water interface, static After standing for 5 days, hairy mesoporous molecular sieve fibers grow out in the water phase. Observed under an optical microscope, the fiber is a straight colorless and transparent silica fiber.

[0017] The main physical indicators of mesoporous molecular sieve fibers: the interface diameter is 1 micron, and the length is 5-6 mm. XRD and TEM images show a hexagonal MCM-41 structure, in which the channels are parallel to the main axis of the fiber. Pore ​​diameter 2~4nm, specific surface area up to 1200m 2 / g, the pore volume is 0.78cm 3 / g. The thermal stability is higher than 850...

Embodiment 2

[0018] Embodiment 2, 28g cetyltrimethylammonium chloride is dissolved in 4750g water, then add 1625g hydrochloric acid solution (6mol / Kg), make a clear and transparent solution A. Transfer solution A to a long and thin culture vessel, according to the mass ratio of tetrabutyl orthosilicate to solution A is 1 / 125, slowly add 51.25g of tetrabutyl orthosilicate to form an oil-water interface. After standing for 5 days, hairy mesoporous molecular sieve fibers grow in the water phase. Observed under an optical microscope, the fiber is a straight colorless transparent mesoporous silica fiber.

[0019] The main physical indicators of mesoporous molecular sieve fibers: the interface diameter is 1 micron, and the length is 5-6 mm. XRD and TEM images show a hexagonal MCM-41 structure, in which the channels are parallel to the main axis of the fiber. Pore ​​diameter 2~4nm, specific surface area up to 1200m 2 / g, the pore volume is 0.78cm 3 / g. The thermal stability is higher than 85...

Embodiment 3

[0020] Embodiment 3, 35g cetyltrimethylammonium iodide is dissolved in 4750g water, then add 1625g hydrochloric acid solution (6mol / Kg), make a clear and transparent solution A. Transfer solution A to a slender culture vessel, according to the mass ratio of tetrabutyl orthosilicate to solution A is 1 / 125, slowly add 51.25g of tetrabutyl orthosilicate to form an oil-water interface, static After standing for 5 days, hairy mesoporous molecular sieve fibers grow out in the water phase. Observed under an optical microscope, the fiber is a straight colorless transparent mesoporous silica fiber.

[0021] The main physical indicators of mesoporous molecular sieve fibers: the interface diameter is 1 micron, and the length is 5-6 mm. XRD and TEM images show a hexagonal MCM-41 structure, in which the channels are parallel to the main axis of the fiber. Pore ​​diameter 2~4nm, specific surface area up to 1200m 2 / g, the pore volume is 0.78cm 3 / g. The thermal stability is higher than...

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
diameteraaaaaaaaaa
lengthaaaaaaaaaa
pore sizeaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the technical field of inorganic composite materials, and specifically relates to a preparation method of mesoporous molecular sieve fibers, which uses cationic surfactants or nonionic surfactants as templates, and uses acid-catalyzed oily reaction sources and static interface technology to synthesize fibers. By changing the silicon source or other non-silicon reaction sources, acidity, proportion, surfactant type and reaction time, etc., the axial diameter ratio of the fiber can be adjusted. The fiber diameter can be controlled on the order of submicron to submillimeter, the length is from hundreds of microns to more than ten centimeters, the pore diameter is 2-10nm, and the pore volume is 0.5-2.0cm 3 / g, the corresponding specific surface area is 500~1500m 2 / g. The fiber has a high specific surface area and is widely used in microelectrodes, atomic force microprobes, and preparation of nanotubes and nanowires.

Description

technical field [0001] The invention belongs to the technical field of inorganic composite materials, and specifically relates to a method for synthesizing mesoporous molecular sieve fibers, mainly referring to a method for synthesizing fibers at a static interface guided by a cationic surfactant or a nonionic surfactant as a template structure. technical background [0002] In 1992, researchers from Mobil Corporation of the United States first reported the M41S series mesoporous molecular sieves with high specific area and high degree of order in Nature, and people have conducted increasingly extensive research on their synthesis and their applications in catalysis and adsorption. However, the application of materials generally requires its corresponding morphology, such as balls, flakes and fibers. Studies have shown that fibrous mesoporous molecular sieves may have a wide range of applications in catalysis, adsorption separation, sensors, microelectrodes, electron micropr...

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): B01J29/04C01B39/00C01B39/04
Inventor 赵东元周亚明孙锦玉张震东余承忠屠波
Owner FUDAN UNIV
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