A kind of small size metal oxide nanocluster/mesoporous sio2 nanocomposite material and preparation method thereof

A nanocomposite material and oxide technology, which is applied in the field of nanomaterial preparation and heterogeneous catalysis, can solve the problems of long reaction time and complicated process, and achieve the effect of small size, relatively large pore diameter and high pore volume

Active Publication Date: 2018-06-08
DALIAN UNIV OF TECH
View PDF3 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2015, Kuroda et al. prepared mesoporous silica with a particle size of 20 nm and a pore size of 5 nm by hydrocolloid method using methyl orthosilicate as a silicon source and triisopropylbenzene as an additive at 80 °C for 12 h. ~8nm, this preparation method takes a long time to react and the process is relatively complicated (Nanoscale, 2015, 7, 19557)

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 small size metal oxide nanocluster/mesoporous sio2 nanocomposite material and preparation method thereof
  • A kind of small size metal oxide nanocluster/mesoporous sio2 nanocomposite material and preparation method thereof
  • A kind of small size metal oxide nanocluster/mesoporous sio2 nanocomposite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029]Add 0.01mol of cationic surfactant cetyltrimethylammonium chloride into the flask, then add 11mL of cyclohexane, 3mL of n-butanol, and 0.6mL of ammonia water into the flask, stir at 25°C for 3min, and then Add 50 μL ammonium molybdate (0.05 mol / L ammonium molybdate aqueous solution) and continue stirring for 40 min. Measure 0.08mL tetraethyl orthosilicate, add octadecyltrimethoxysilane so that the molar ratio of octadecyltrimethoxysilane: ethyl orthosilicate is 1:4, and react for 2h. After the reaction is finished, isopropanol is added, and then undergoes ultrasonication, centrifugation, washing, roasting, and natural cooling to obtain the target product. The roasting process is as follows: during the whole roasting process, air with a flow rate of 20mL / min is introduced, and the temperature is programmed from room temperature to 250 °C at a rate of 5 °C / min, and then roasted for 30 minutes, and then the temperature is programmed to rise to 300 °C at a rate of 2 °C / min. ...

Embodiment 2

[0031] 0.01 mol of cationic surfactant cetyltrimethylammonium bromide was added to the flask, and then 17 mL of cyclohexane, 5 mL of n-butanol and 0.8 mL of ammonia water were added to the flask. Stir at 35°C for 3 min, then add 50 μL ammonium molybdate (0.1 mol / L ammonium molybdate aqueous solution) and continue stirring for 40 min. Measure 1.8mL tetraethyl orthosilicate, add octadecyltrimethoxysilane, make C 18 The molar ratio of TMS to TEOS was 1:4, and the reaction was 2h. After the reaction is finished, isopropanol is added, and then undergoes ultrasonication, centrifugation, washing, roasting, and natural cooling to obtain the target product. The roasting process is as follows: the air flow rate is 30 mL / min throughout the roasting process, and the temperature is programmed from room temperature to 250 °C at a rate of 10 °C / min for 40 min, and then the temperature is programmed to rise to 500 Calcined at ℃ for 2h to get MoO 3 Nanocluster / Mesoporous SiO 2 nanocomposit...

Embodiment 3

[0034] Take 0.01mol of cationic surfactant cetyltrimethylammonium chloride and add it into the flask, then add 19mL of cyclohexane, 5.5mL of n-butanol, and 1mL of ammonia water into the flask, stir at 45°C for 3min, and then Add 50 μL ammonium molybdate (0.2 mol / L ammonium molybdate aqueous solution) and continue stirring for 40 min. Measure 6 mL of ethyl orthosilicate, add octadecyltrimethoxysilane to make the molar ratio of octadecyltrimethoxysilane: ethyl orthosilicate is 1:40, and react for 2 hours. After the reaction is finished, isopropanol is added, and then undergoes ultrasonication, centrifugation, washing, roasting, and natural cooling to obtain the target product. The roasting process is as follows: during the whole roasting process, air with a flow rate of 40mL / min is introduced, and the temperature is programmed from room temperature to 250 °C at a rate of 2 °C / min, and then roasted for 50 minutes, and then the temperature is programmed to rise to 380 °C at a 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
particle diameteraaaaaaaaaa
pore sizeaaaaaaaaaa
particle diameteraaaaaaaaaa
Login to view more

Abstract

The invention belongs to the field of nanometer material preparation and particularly relates to a small-sized metallic oxide nano-cluster / mesoporous SiO2 nanocomposite and a preparation method thereof. The particle size and the pore diameter of every mesoporous SiO2 nanosphere carrier are 5-30 nm and 2-5 nm respectively; every metallic oxide nano-cluster refers to MoO3 or WO3 and 0.1-2 nm in particle size. A reversed-phase microemulsion method is adopted for synthesis. The preparation method of the small-sized metallic oxide nano-cluster / mesoporous SiO2 nanocomposite is simple in technology, economic and safe; the metallic oxide nano-clusters are highly dispersed on the mesoporous SiO2 carrier, the metallic oxide nano-clusters and the mesoporous SiO2 carrier are controllable in both size and shape, and accordingly the small-sized metallic oxide nano-cluster / mesoporous SiO2 nanocomposite is excellent in catalytic performance.

Description

technical field [0001] The invention belongs to the technical field of nanomaterial preparation and heterogeneous catalysis, and relates to a kind of MoO 3 / Mesoporous SiO 2 and WO 3 / Mesoporous SiO 2 Nanocomposite materials and their synthesis methods, especially related to the preparation of MoO with inverse microemulsion as a reaction system 3 / Mesoporous SiO 2 and WO 3 / Mesoporous SiO 2 nanocomposites. Background technique [0002] Mesoporous silica is a non-toxic material. Due to its high chemical stability and biocompatibility, as well as its huge specific surface area and uniform and adjustable pores, it is a carrier with excellent properties. , separation, adsorption and drug transport play an important role. Therefore, the preparation of mesoporous silica with high specific area and high pore volume has become a research hotspot of scholars, and many preparation methods have been developed so far. [0003] In the 1890s, Exxon Mobil used the principle of liq...

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): B01J23/28B01J23/30B01J35/10B82Y30/00C10G27/00
CPCB01J23/28B01J23/30B01J35/1004B01J35/1033B01J35/1061B82Y30/00C10G27/00
Inventor 王加升武文佩包明
Owner DALIAN UNIV OF TECH
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