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Anionic surfactant intercalation titanium-based hydrotalcite and preparation thereof

A surfactant and anionic technology, which is applied in the field of titanium-based multifunctional organic-inorganic hybrid materials, can solve the problem of no anionic surfactant intercalation titanium-based hydrotalcite research, and no non-urea co-precipitation method. Titanium-based hydrotalcite and other problems, to achieve the effect of good adsorption effect and high application value

Inactive Publication Date: 2008-10-01
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] So far, there is no report on the preparation of titanium-based hydrotalcite by non-urea co-precipitation method, and there is no research on anionic surfactant intercalation of titanium-based hydrotalcite

Method used

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  • Anionic surfactant intercalation titanium-based hydrotalcite and preparation thereof
  • Anionic surfactant intercalation titanium-based hydrotalcite and preparation thereof
  • Anionic surfactant intercalation titanium-based hydrotalcite and preparation thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] 1. Dissolve sodium dodecylbenzenesulfonate (DBS-Na) (0.009mol, 3.1365g) in 120mL of deCO 2 Solution A was prepared in deionized water, Ni(NO 3 ) 2 ·6H 2 O (0.01266mol, 3.6815g) and TiCl 4 (0.5mL, 0.00422mol, while adding 2.0mL of hydrochloric acid to prevent TiCl 4 Hydrolysis) solution was dissolved in 70mL of deCO 2 Mixed salt solution B was prepared in deionized water, and NaOH (0.15mol, 6g) was dissolved in 300mL of deCO 2 In deionized water, make alkaline solution C.

[0027] 2. First put solution A into a 500mL four-necked bottle, at 35°C, under N 2Under protection and stirring conditions, the mixed salt solution B and alkali solution C were slowly added dropwise to solution A at the same time, the dropping rate was 2.33mL / min, the pH of the solution was always kept at 7.6 during the dropping process, and the dropping time was 30 minutes.

[0028] 3. After the dropwise addition, the solution was 2 Crystallization at 80°C under protection for 24 hours, then ...

Embodiment 2

[0031] 1. Dissolve DBS-Na (0.011mol, 3.8306g) in 180mL of deCO 2 Solution A was prepared in deionized water, Ni(NO 3 ) 2 ·6H 2 O (0.02532mol, 7.3643g) and TiCl 4 (containing 2.0mL of hydrochloric acid, 0.5mL of TiCl 4 , 0.00422mol) solution dissolved in 70mL of deCO 2 Mixed salt solution B was prepared in deionized water, and NaOH (0.15mol, 6g) was dissolved in 300mL of deCO 2 In deionized water, make alkaline solution C.

[0032] 2. First put solution A into a 500mL four-neck bottle, at 55°C, under N 2 Under protection and stirring conditions, the mixed salt solution B and alkali solution C were slowly added dropwise to solution A at the same time, the dropping rate was 1.17mL / min, the pH of the solution was always kept at 7.6 during the dropping process, and the dropping time was 1 hour.

[0033] 3. After the dropwise addition, the solution was 2 Crystallize at 80°C for 72 hours under protection, then cool to room temperature, transfer the mixture to a centrifuge tub...

Embodiment 3

[0036] 1. Dissolve DBS-Na (0.018mol, 6.273g) in 150mL of deCO 2 Solution A was prepared in deionized water, Ni(NO 3 ) 2 ·6H 2 O (0.042mol, 12.21g) and TiCl 4 (Containing 3.2mL of hydrochloric acid, 1.0mL of TiCl 4 , 0.00844mol) solution was dissolved in 70mL of deCO 2 Mixed salt solution B was prepared in deionized water, and NaOH (0.3mol, 12g) was dissolved in 300mL of deCO 2 In deionized water, make alkaline solution C.

[0037] 2. First put solution A into a 500mL four-necked bottle, at 35°C, under N 2 Under protection and stirring conditions, the mixed salt solution B and alkali solution C were slowly added dropwise to solution A at the same time, the dropping rate was 0.78mL / min, the pH of the solution was always kept at 8.2 during the dropping process, and the dropping time was 1.5 hours.

[0038] 3. After the dropwise addition, the solution was 2 Crystallize at 60°C under protection for 24 hours, then cool to room temperature, centrifuge at 2000 rpm for 10 minut...

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Abstract

The invention relates to an intercalated titanium-based hydrotalcite of an anionic surfactant and a preparation method thereof, pertaining to the filed of titanium-based multi-functional organic-inorganic hybrid functional materials. Lamellar material LDHs containing titanium is taken as a subject while the anions of the surfactant are taken as objects; the LDHs and the anions of the surfactant are synthesized by a double-dropping coprecipitation method to obtain organic-inorganic hybrid material with supermolecule lamellar structure; the chemical formula of the hybrid material is [(M<2+>)1-x(Ti <4+>)x(OH) 2]<2x +>(Surf)<->2x mH2O. The intercalated titanium-based hydrotalcite of the invention has the advantages that the material not only can be used as an adsorbing material to absorb organic pollutants in the environment, but also can be used as an anion exchanger or a catalytic material.

Description

technical field [0001] The invention belongs to the field of titanium-based multifunctional organic-inorganic hybrid materials, and in particular provides a method for preparing an anionic surfactant intercalated titanium-based hydrotalcite, which is a new type of adsorption or adsorption / degradation material, which can absorb Various organic pollutants in the environment, especially persistent organic pollutants. At the same time, due to the presence of the titanium base, it also has a catalytic degradation effect on organic pollutants. technical background [0002] Hydrotalcite (Layered double hydroxides, LDHs for short) intercalation material is an important anion-type layered material, which has the controllability of layered metal elements and the exchangeability of anions between layers. [0003] The hydrotalcites containing Ti in the laminates and their calcined products exhibit good catalytic performance in liquid-phase conversion reactions of organic molecules and ...

Claims

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Application Information

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IPC IPC(8): C01G1/00B01J20/02
Inventor 张慧李泽江段雪
Owner BEIJING UNIV OF CHEM TECH
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