Mesoporous molecular sieve/phosphoramide composite material and preparation method thereof

A technology of mesoporous molecular sieve and composite material, which is applied in the field of mesoporous molecular sieve/phosphoramide composite material and its preparation, can solve the problems of insufficient uranyl adsorption capacity and the like, and achieve excellent uranyl ion adsorption performance, high yield and good application. Foreground effect

Inactive Publication Date: 2016-04-13
MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a mesoporous molecular sieve / phosphoramide composite material and its preparation method in view of the insufficient adsorption of uranyl by the existing SBA-15 molecular sieve
The present invention is essentially a SBA-15 mesoporous molecular sieve-phosphoramide composite material and its preparation method. The mesoporous molecular sieve / phosphoramide composite material of the present invention has a huge specific surface area and a better affinity for uranyl, and has Excellent uranyl ion adsorption performance can effectively solve the problem of insufficient adsorption of uranyl by existing SBA-15 molecular sieves

Method used

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  • Mesoporous molecular sieve/phosphoramide composite material and preparation method thereof
  • Mesoporous molecular sieve/phosphoramide composite material and preparation method thereof
  • Mesoporous molecular sieve/phosphoramide composite material and preparation method thereof

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Effect test

Embodiment 1

[0046] Two mesoporous molecular sieve / phosphoramide composite materials with a grafting rate of 20% were prepared.

[0047] (1) Synthesis of phosphoramido silane coupling agent

[0048] Diethyl chlorophosphate (DECP) was used as the phosphorus source, 3-aminopropyltrimethoxysilane (APTMS) was used as the coupling agent, triethylamine (TEA) was used as the catalyst, and dried toluene was used as the solvent. Weigh DECP, APTMS and TEA according to the molar ratio of 3:1:0.2 and set aside. The weighed 0.1 mol 3-aminopropyltrimethoxysilane and 0.02 mol triethylamine were dissolved in 200 mL of dry toluene to obtain the first solution. The weighed 0.3 mol diethyl chlorophosphate was dissolved in 100 mL of dry toluene solution to obtain a second solution. Then, under the protection of nitrogen, add the first solution to the second solution in an ice water bath at 0~5℃, and stir vigorously while adding. After the addition, the reactant is warmed to room temperature and the reaction is c...

Embodiment 2

[0053] (1) Synthesis of phosphoramido silane coupling agent

[0054] Diethyl chlorophosphate (DECP) was used as the phosphorus source, 3-aminopropyltrimethoxysilane (APTMS) was used as the coupling agent, triethylamine (TEA) was used as the catalyst, and dried toluene was used as the solvent. Weigh DECP, APTMS and TEA according to the molar ratio of 1:1:1, and set aside. The weighed 0.1 mol 3-aminopropyltrimethoxysilane and 0.1 mol triethylamine were dissolved in 300 mL of dry toluene to obtain the first solution. The weighed 0.1 mol diethyl chlorophosphate was dissolved in 50 mL of dry toluene solution to obtain a second solution. Then, under the protection of nitrogen, add the first solution to the second solution in an ice-water bath at 0~5℃, and stir vigorously while adding. After the addition is completed, the reactant is warmed to room temperature and the reaction is continued for 8 hours to obtain the reaction product The reaction product is suction filtered to remove th...

Embodiment 3

[0058] (1) Synthesis of phosphoramido silane coupling agent

[0059] Diethyl chlorophosphate (DECP) was used as the phosphorus source, 3-aminopropyltrimethoxysilane (APTMS) was used as the coupling agent, triethylamine (TEA) was used as the catalyst, and dried toluene was used as the solvent. Weigh DECP, APTMS and TEA according to the molar ratio of 1:1:1, and set aside. The weighed 0.1 mol 3-aminopropyltrimethoxysilane and 0.1 mol triethylamine were dissolved in 300 mL of dry toluene to obtain the first solution. The weighed 0.1 mol diethyl chlorophosphate was dissolved in 50 mL of dry toluene solution to obtain a second solution. Then, under the protection of nitrogen, add the first solution to the second solution in an ice-water bath at 0~5℃, and stir vigorously while adding. After the addition is completed, the reactant is warmed to room temperature and the reaction is continued for 8 hours to obtain the reaction product The reaction product is suction filtered to remove th...

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Abstract

The invention discloses a mesoporous molecular sieve / phosphoramide composite material and a preparation method thereof. The mesoporous molecular sieve / phosphoramide composite material aims to solve the problems that existing SBA-15 molecular sieves are poor in uranyl adsorbing capacity. The mesoporous molecular sieve / phosphoramide composite material comprises components with percentage by mass: 75-97% of SBA-15 mesoporous molecular sieves and 3-25% of phosphamide perssad, wherein the phosphamide perssad and the SBA-15 are connected through covalent interaction. The invention substantially discloses an SBA-15 mesoporous molecular sieve- phosphoramide composite material and a preparation method thereof, the mesoporous molecular sieve / phosphoramide composite material has large specific surface area and excellent appetency to the uranyl, has excellent uranyl ion adsorption property, and can effectively solve the problem that existing SBA-15 molecular sieves are poor in uranyl adsorbing capacity. Simultaneously, the preparation method of the mesoporous molecular sieve / phosphoramide composite material is simple, low in production cost and high in yield, can meet the demands of large-scale industrialized application, has excellent application prospect, and is worthy of large-scale popularization and application.

Description

Technical field [0001] The invention relates to the field of materials, in particular to a mesoporous molecular sieve / phosphoramide composite material and a preparation method thereof. The invention can effectively solve the problem of insufficient uranyl adsorption capacity of the existing SBA-15 molecular sieve, and has a good application prospect. Background technique [0002] SBA-15 mesoporous molecular sieve was invented by Academician Zhao Dongyuan, Stucky and others in 1998. It has the advantages of large specific surface area, stable physical and chemical properties, and strong modifiable ability. At present, SBA-15 mesoporous molecular sieve has been widely used in the fields of catalysis, adsorption separation, advanced inorganic materials and so on. [0003] Based on the above-mentioned advantages, people hope to further improve the SBA-15 mesoporous molecular sieve to improve its performance. Summary of the invention [0004] The purpose of the present invention is to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01J20/18B01J20/32
CPCB01J20/186B01J20/3204B01J20/3219B01J20/3251
Inventor 任一鸣邵浪杨蕊竹唐浩仲敬荣秦震邓辉
Owner MATERIAL INST OF CHINA ACADEMY OF ENG PHYSICS
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