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Method for synthesizing SOD type sodalite in low-temperature controllable manner

A sodalite and low-temperature technology, which is applied in the direction of aluminum silicate and silicate, can solve the problems of complex process and achieve the effect of simple synthesis process, uniform particle size and mild conditions

Inactive Publication Date: 2015-04-22
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned methods for synthesizing sodalite all use organic additives or templating agents, and the process is complex

Method used

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  • Method for synthesizing SOD type sodalite in low-temperature controllable manner
  • Method for synthesizing SOD type sodalite in low-temperature controllable manner
  • Method for synthesizing SOD type sodalite in low-temperature controllable manner

Examples

Experimental program
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Effect test

Embodiment 1

[0026] Weigh 2.5g sodium hydroxide and dissolve in 20mL deionized water, add 1.385g Al 2 (SO 4 ) 3 Mix well and continue to add 1.18g Na 2 SiO 3 9H 2 O, to obtain a mixed solution, 0.2 g of diatomaceous earth was added to the above mixed solution under stirring conditions, and the mixture was continuously stirred for 2 hours to form a white uniform emulsion.

[0027] Seal the resulting mixture in a hydrothermal reaction kettle, let it stand at 80°C for 24 hours, and after natural cooling, wash it with water by centrifugation or Buchner funnel filtration, separate it, and then dry it in a blast drying oven at 60°C for 12 hours , Take out and grind to get the product.

[0028] figure 1 It is the XRD figure of the product synthesized in this embodiment, as can be seen from the figure at 13.8 °, 24.3 °, 31.4 °, 34.5 °, the peaks that appear at 42.6 ° correspond to the standard cards of sodalite one by one, and it can be judged that the product is square Sodalite structure,...

Embodiment 2

[0031] Weigh 2.5g sodium hydroxide and dissolve in 20mL deionized water, add 1.955g AlCl 3 Mix well and continue to add 1.18g Na 2 SiO 3 9H 2 O, to obtain a mixed solution, 0.2 g of diatomaceous earth was added to the above mixed solution under stirring conditions, and the mixture was continuously stirred for 2 hours to form a white uniform emulsion.

[0032] Seal the resulting mixture in a hydrothermal reaction kettle, let it stand at 80°C for 24 hours, and after natural cooling, wash it with water by centrifugation or Buchner funnel filtration, separate it, and then dry it in a blast drying oven at 60°C for 12 hours , Take out and grind to get SOD type sodalite.

Embodiment 3

[0034] Weigh 2.5g sodium hydroxide and dissolve in 20mL deionized water, add 3.04g Al(NO 3 ) 3 9H 2 o

[0035] Mix well and continue to add 1.18g Na 2 SiO 3 9H 2 O, to obtain a mixed solution, 0.2 g of diatomaceous earth was added to the above mixed solution under stirring conditions, and the mixture was continuously stirred for 2 hours to form a white uniform emulsion.

[0036] The resulting mixture was sealed in a 50mL hydrothermal reaction kettle lined with a polytetrafluoroethylene pad, and left to react at 80°C for 24 hours. After natural cooling, it was washed with water by centrifugal or Buchner funnel filtration, separated, and then in Dry it in a blast oven at 60°C for 12 hours, take it out and grind it to get SOD type sodalite.

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Abstract

The invention relates to a method for synthesizing SOD type sodalite in a low-temperature controllable manner. The method comprises the following steps: 1) preparing a mixed solution, namely, dissolving strong alkali into deionized water at normal temperature, adding an aluminum salt and a silicon source, and uniformly stirring, thereby obtaining the mixed solution; and 2) synthesizing the SOD type sodalite, namely, under the stirring condition, adding a clay mineral into the mixed solution, stirring for 0.5-4 hours so as to obtain a mixture, sealing the obtained mixture in a hydrothermal reaction kettle for hydrothermal reaction for 12-26 hours at 60-120 DEG C, or adding the obtained mixture into a backflow reaction device to carry out stirring backflow reaction for 18-36 hours at 80-150 DEG C, and performing aftertreatment, thereby obtaining the SOD type sodalite. The method is free of organic additive, short in synthesis time, convenient in rapid and large-scale production, simple in synthesis step, easily available in raw materials, low in production cost and good in production crystallinity degree.

Description

technical field [0001] The invention relates to a slow-release and anti-corrosion magnetic nano material and a preparation method thereof, in particular to a preparation technology of composite magnetic nano microspheres. Background technique [0002] Sodalite is a sodalite cage (SOD or β cage) that belongs to the body-centered cubic arrangement. The space group P-43n has a small pore size and is connected by a single four- or six-membered ring. A SOD cage consists of six Composed of four-membered rings and eight six-membered rings, the pore window of sodalite is only six-membered rings, and the 111-face skeleton structure of sodalite is shown in the attached figure 2 shown. [0003] Sodalite has important application prospects in adsorption and hydrogen storage, and can also be used as a photochromic material, which has great industrial application prospects. At present, the synthesis of sodalite can be carried out by adding a large amount of organic templates by chemical...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
Inventor 姜杨杨超田熙科周朝昕王龙艳罗东岳
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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