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Titanium-doped mesoporous material Ti-SBA-15, and preparation method and application thereof

A mesoporous material and titanium doping technology, applied in chemical instruments and methods, other chemical processes, inorganic chemistry, etc., can solve the problems of fast hydrolysis, affecting application performance, and high price, so as to achieve good adsorption performance and avoid structure Effect of inhomogeneity and uniform Ti distribution

Inactive Publication Date: 2017-07-28
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Commonly used metal sources include organometallic compounds and inorganic metal salts, and organometallic compounds are relatively expensive and highly toxic
However, inorganic metal salts as metal sources have the problem of too fast hydrolysis in the preparation process of metal-doped mesoporous materials, which usually leads to the formation of metal oxide particles, thereby blocking the pores of mesoporous materials and affecting their application properties.

Method used

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  • Titanium-doped mesoporous material Ti-SBA-15, and preparation method and application thereof
  • Titanium-doped mesoporous material Ti-SBA-15, and preparation method and application thereof
  • Titanium-doped mesoporous material Ti-SBA-15, and preparation method and application thereof

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preparation example Construction

[0025] The preparation method of the titanium-doped mesoporous material involved in the present invention comprises the following steps:

[0026] 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;

[0027] Step 2: Weigh 0.09-0.18 g of lactic acid, dissolve it in 20 mL of deionized water, and then add 0.48-0.96 g of Ti(SO 4 ) 2 Stir with a magnetic stirrer until the solution is transparent;

[0028] 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.

[0029] Step 4: Transfer the hydrolyzed solution in Step 3 to a...

Embodiment 1

[0032] A titanium-doped mesoporous material Ti-SBA-15 and a preparation method thereof, comprising the steps of:

[0033] 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;

[0034] Step 2: Weigh 0.18 g of lactic acid, dissolve it in 20 mL of deionized water, and then add 0.96 g of Ti(SO 4 ) 2 Stir with a magnetic stirrer until the solution is transparent;

[0035] 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.

[0036] Step 4: Transfer the hydrolyzed solution in Step 3 to a polytetrafluoroethylene-lined aut...

Embodiment 2

[0043] 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;

[0044] Step 2: Weigh 0.09 g of lactic acid, dissolve it in 20 mL of deionized water, and then add 0.48 g of Ti(SO 4 ) 2 Stir with a magnetic stirrer until the solution is transparent;

[0045] 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.

[0046] Step 4: Transfer the hydrolyzed solution in Step 3 to a polytetrafluoroethylene-lined autoclave, and place it in an oven at 90°C for hydrothermal reaction for 24 hours. After the reaction, a white solid pr...

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Abstract

The invention discloses a titanium-doped mesoporous material Ti-SBA-15, and a preparation method and application thereof. Titanium doping is carried out on the basis of the preparation of an SBA-15 mesoporous material by taking lactic acid as a metal ion complexing agent, a complex after complexing with Ti(SO4)2 as a titanium source and tetraethoxysilane as a silicon source, so that the titanium-doped mesoporous material Ti-SBA-15 is prepared. The stable complex is generated by using complexing of lactic acid and Ti(SO4)2, so that the problem that the prepared Ti-SBA-15 is non-uniform in structure and non-uniform in titanium distribution caused by the fact that Ti(SO4)2 is extremely easily hydrolyzed in a water solution to generate TiO2. The Ti-SBA-15 prepared in the invention can serve as an adsorbing material for adsorbing and processing dye wastewater.

Description

technical field [0001] The invention relates to the technical field of preparation of metal hybrid mesoporous materials, in particular to a titanium-doped mesoporous material Ti-SBA-15, 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 size ranging from 2 to 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): B01J20/10B01J20/30C02F1/28C02F101/30
CPCB01J20/103B01J20/0211C02F1/281C02F2101/308
Inventor 强涛涛赵静高华鸣陈露王婉妮任龙芳
Owner SHAANXI UNIV OF SCI & TECH
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