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Mesoporous zirconia nano material and method for preparing same

A technology of mesoporous zirconia and nanomaterials, applied in the direction of zirconia and nanotechnology, can solve the problems of poor thermal stability, irregular pore size distribution, and small specific surface area of ​​mesoporous zirconia, and achieve suitable for large-scale production and low cost. Effect of low cost and high specific surface area

Inactive Publication Date: 2012-11-14
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The purpose of the present invention is to propose a kind of mesoporous zirconia with higher thermal stability, high specific surface area and comparatively low thermal stability in order to solve the problems such as poor thermal stability, small specific surface area, small void, and irregular pore size distribution of prior art. Mesoporous zirconia nanomaterial with high pore volume and preparation method thereof, and the method has low cost, simple and controllable synthesis route, and is suitable for large-scale production

Method used

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  • Mesoporous zirconia nano material and method for preparing same
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  • Mesoporous zirconia nano material and method for preparing same

Examples

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Embodiment 1

[0047] A method for preparing a mesoporous zirconia nanomaterial, comprising the following steps:

[0048] (1), add 0.5g of EO 106 PO 70 EO 106 Disperse in 5g of ethanol and stir at room temperature for 5min, then add 0.05g of ZrOCl 2 , stirred at room temperature for 5min, then added 0.05g tetraethyl orthosilicate and 0.25g phenolic resin in turn, stirred at room temperature for 20min until a homogeneous transparent solution was formed,

[0049] Put the homogeneous transparent solution obtained above into a crystallization dish, put it in a fume hood overnight, then put it into a blast drying oven, control the temperature at 50°C, and take 24 hours to obtain the organic / inorganic zirconia composite. dry film;

[0050] (2) Put the dry film of the organic / inorganic zirconia composite obtained in step (1) in a tube furnace, heat up to 700°C at a rate of 1°C / min under a nitrogen atmosphere, and bake at this temperature After 20h, it was naturally cooled to room temperature t...

Embodiment 2

[0062] A method for preparing a mesoporous zirconia nanomaterial, comprising the following steps:

[0063] (1), add 0.5g of EO 20 PO 70 EO 20 Disperse in 25g of deionized water and stir for 5min at room temperature, then add 2.5g of zirconium tetrachloride, stir for 5min at room temperature, then add 5g of tetramethyl orthosilicate and 25g of sucrose in turn, and stir for 20min at room temperature until it becomes homogeneous and transparent solution;

[0064] Put the homogeneous transparent solution obtained above into a crystallization dish, put it in a fume hood overnight, and then put it into a blast drying oven to control the temperature at 150°C for 24 hours to obtain the dryness of the organic / inorganic zirconia composite. film;

[0065] (2) Put the dry film of the organic / inorganic zirconia composite obtained in step (1) in a tube furnace, heat up to 1100°C at a rate of 1°C / min under a nitrogen atmosphere, and bake at this temperature After 6h, naturally cool to r...

Embodiment 3

[0070] A method for preparing a mesoporous zirconia nanomaterial, comprising the following steps:

[0071] (1), add 0.5g of EO 132 PO 60 EO 132 Disperse in 6g of methanol, stir at room temperature for 5min, then add 0.2g of zirconium nitrate, stir at room temperature for 5min, then add 0.1g of tetrapropyl orthosilicate and 2.5g of furfuryl alcohol resin in turn, stir at room temperature for 30min until homogeneous clear solution;

[0072] Put the homogeneous transparent solution obtained above into a crystallization dish, put it in a fume hood overnight, then put it into a blast drying oven, control the temperature at 60°C, and keep the time for 24h to obtain an organic / inorganic zirconia composite dry film;

[0073] (2) Put the dry film of the organic / inorganic zirconia composite obtained in step (1) in a tube furnace, heat up to 800°C at a rate of 1°C / min in a nitrogen atmosphere, and bake at this temperature After 6h, it was naturally cooled to room temperature to obtain...

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Abstract

The invention discloses a mesoporous zirconia nano material and a method for preparing the same. A non-ionic surfactant is taken as a template agent, an organic silicon source and an organic macromolecular polymer are used as organic precursors, an inorganic zirconium source is used as an inorganic precursor, a method for assembling the four components through evaporation and induction is utilized to form an organic-inorganic composite, and the organic-inorganic composite is then calcinated into a mesoporous silicon dioxide / carbon / zirconia composite at 700-1100 DEG C; the mesoporous silicon dioxide / carbon / zirconia composite is further calcinated into a mesoporous silicon dioxide / zirconia composite at 400-500 DEG C in the air; and finally, a silicon dioxide template agent in the composite is removed through aqueous alkali treatment, so the mesoporous zirconia nano material is obtained. The obtained mesoporous zirconia nano material has good pore passage ordering, high zirconia crystallization degree, the specific surface area of 195-400 m<2> / g, a pore diameter of 3-8nm and a pore volume of 0.3-1.0 cm<3> / g. The method for preparing is simple, practicable and low in cost, and has high repeatability.

Description

technical field [0001] The invention relates to a mesoporous zirconia nano material and a preparation method thereof, belonging to the field of inorganic nano materials. Background technique [0002] Mesoporous materials mainly refer to new porous materials with a pore size between 2-50nm, regular and uniform pore structure, long-range order, and specific spatial symmetry. Since the first report of the MCM-41 series of mesoporous silica materials in 1992, mesoporous materials have attracted researchers' attention due to their high specific surface area, diverse pore morphology arrangement, adjustable pore size and large pore volume. interest of. [0003] ZrO 2 Oxidizing and reducing, it is the only transition metal oxide that has both acidic and basic sites on the surface, and it is also a P-type semiconductor with good ion exchange performance and oxygen vacancies enriched on the surface. As a catalyst carrier, it can interact with active components and is an ideal mult...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01G25/02B82Y40/00
Inventor 吴玉昭沈绍典李瑜婷毛东森卢冠忠
Owner SHANGHAI INST OF TECH
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