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Zirconium-doped mesoporous material Zr-SBA-15 as well as preparation method and application thereof

A mesoporous material, zr-sba-15 technology, applied in chemical instruments and methods, other chemical processes, inorganic chemistry, etc., can solve the problems of high toxicity, uneven distribution of final products of hydrolysis speed, high price, etc. The effect of adsorption performance

Active Publication Date: 2017-03-15
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, zirconium propoxide and zirconium oxychloride are very expensive and highly toxic, and the price of zirconium nitrate is also slightly expensive, and the current research results have the problem that the hydrolysis speed is too fast during the zirconium salt hydrolysis process, resulting in uneven distribution of the final product

Method used

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  • Zirconium-doped mesoporous material Zr-SBA-15 as well as preparation method and application thereof
  • Zirconium-doped mesoporous material Zr-SBA-15 as well as preparation method and application thereof
  • Zirconium-doped mesoporous material Zr-SBA-15 as well as preparation method and application thereof

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preparation example Construction

[0030] The preparation method of the zirconium-doped mesoporous material Zr-SBA-15 involved in the present invention comprises the following steps:

[0031] Step 1: Dissolve 2.00g of triblock copolymer template agent and 1.18g of NaCl in 60mL of deionized water, stir in a water bath at 40°C until completely dissolved; then add 4.5mL of tetraethyl orthosilicate (TEOS) dropwise to make The mixed solution was stirred and pre-hydrolyzed for 4 hours under the condition of heating in a water bath at 40°C;

[0032] Step 2: Weigh 0.50-1.21g of metal ion complexing agent, dissolve in 20mL deionized water, then add 1.44-14.40g Zr(SO 4 ) 2 Stir with a magnetic stirrer until the solution is transparent;

[0033] Step 3: Add the transparent solution obtained in Step 2 to the mixed solution obtained in Step 1, and then continue to hydrolyze it in a water bath at 40°C for 24 hours;

[0034] Step 4: Transfer the hydrolyzed solution in Step 3 to a polytetrafluoroethylene-lined autoclave, an...

Embodiment 1

[0041] A zirconium-doped mesoporous material Zr-SBA-15 and a preparation method thereof, comprising the steps of:

[0042] Step 1: Dissolve 2.0 g of triblock copolymer template agent P123—polyethylene glycol-polypropylene glycol-polyethylene glycol and 1.18 g of NaCl in 60 mL of deionized water, and stir in a water bath at 40°C until P123 is completely dissolved. Then add 4.5mL tetraethyl orthosilicate (TEOS) dropwise, and make the mixed solution stir and pre-hydrolyze for 4 hours under the condition of heating in a water bath at 40°C;

[0043] Step 2: Weigh 1.10g pentaerythritol, dissolve in 20mL deionized water, then add 1.44g Zr(SO 4 ) 2 Stir with a magnetic stirrer until the solution is transparent;

[0044] Step 3: Add the transparent solution obtained in Step 2 to Step 1, and then continue to hydrolyze for 24 hours under the condition of a water bath at 40°C.

[0045] Step 4: Transfer the hydrolyzed solution in Step 3 to a polytetrafluoroethylene-lined autoclave, and ...

Embodiment 2

[0050] A zirconium-doped mesoporous material Zr-SBA-15 and a preparation method thereof, comprising the steps of:

[0051] Step 1: Dissolve 2.00g of triblock copolymer template agent P123-polyethylene glycol-polypropylene glycol-polyethylene glycol and 1.18g of NaCl in 60mL of deionized water, and stir in a water bath at 40°C until P123 is completely dissolved. Then add 4.5mL tetraethyl orthosilicate (TEOS) dropwise, and make the mixed solution stir and pre-hydrolyze for 4 hours under the condition of heating in a water bath at 40°C;

[0052] Step 2: Weigh 0.73g lactic acid, dissolve it in 20mL deionized water, then add 4.32g Zr(SO 4 ) 2 Stir with a magnetic stirrer until the solution is transparent;

[0053] Step 3: Add the transparent solution obtained in Step 2 to Step 1, and then continue to hydrolyze for 24 hours under the condition of a water bath at 40°C.

[0054] Step 4: Transfer the hydrolyzed solution in Step 3 to a polytetrafluoroethylene-lined autoclave, and pla...

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Abstract

The invention relates to a zirconium-doped mesoporous material Zr-SBA-15 as well as a preparation method and application thereof. A coordination compound generated after a complexing agent and Zr(SO4)2 are subjected to complexing is used as a zirconium source; ethyl orthosilicate is used as a silicon source; the zirconium doping is carried out on the basis of the preparation of an SBA-15 type mesoporous material; therefore, the zirconium-doped mesoporous material Zr-SBA-15 is prepared. By using the zirconium-doped mesoporous material Zr-SBA-15 as well as the preparation method and the application thereof, the problems that the Zr(SO4)2 is extremely easily hydrolyzed in an aqueous solution to generate ZrO2 to accordingly cause the prepared Zr-SBA-15 to be inhomogeneous in structure and non-uniform in zirconium distribution are solved; the prepared Zr-SBA-15 can be used as an adsorbing material for adsorbing PO4<3-> in a water body.

Description

technical field [0001] The invention relates to the technical field of preparation of metal hybrid mesoporous materials, in particular to a zirconium-doped mesoporous material Zr-SBA-15 and its preparation method and application. Background technique [0002] "Mesoporous material" is a kind of porous material with uniform pore structure and large specific surface area. According to the regulations of the International Union of Pure and Applied Chemistry (IUPAC), porous materials with a pore diameter between 2-50 nm can be called "mesoporous materials". Mesoporous materials have the advantages of uniform pore size, orderly arrangement, adjustable pore size, large specific surface area, good thermal stability and hydrothermal stability. Therefore, mesoporous materials have broad application prospects in the fields of adsorption, separation, and catalysis. [0003] However, due to the limitation of the composition of silica molecular sieves, the synthesis and application of t...

Claims

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Application Information

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IPC IPC(8): B01J20/10C02F1/28B01J20/30C02F101/10
CPCB01J20/06B01J20/103C02F1/281C02F2101/105
Inventor 强涛涛赵静任龙芳
Owner SHAANXI UNIV OF SCI & TECH
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