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Method for synthesizing analcime from illite clay by hydrothermal alkali method and analcime

A technology of illite and clay water, applied in the field of new inorganic functional materials, can solve the problems of high energy consumption and high cost, and achieve the effects of low cost, convenient operation and simple process

Active Publication Date: 2021-10-08
SOUTHWEAT UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the above two patents all use a high-temperature roasting process in the process of preparing analcime, which consumes too much energy and costs a lot.

Method used

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  • Method for synthesizing analcime from illite clay by hydrothermal alkali method and analcime
  • Method for synthesizing analcime from illite clay by hydrothermal alkali method and analcime
  • Method for synthesizing analcime from illite clay by hydrothermal alkali method and analcime

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Effect test

example 1

[0044] (1) Press n(SiO 2 ):n(NaOH):n(A1 2 o 3 ):n(H 2 (0)=8:16:1:410, take a certain amount of illite powder, Na 2 SiO 3 9H 2 Put O and NaOH in a container, add an appropriate amount of industrial water to dissolve, age for 1.5 hours under stirring conditions until a uniform suspension of the reaction material is obtained, put the material into a closed reactor, and crystallize at 200°C for 48 hours;

[0045] (2) The obtained product was washed 4 times with industrial water until the pH was neutral, dried at 60° C. for 8 hours, and pulverized to obtain the desired product. Its XRD spectrum is as figure 2 As shown, its SEM spectrum is shown as Figure 4 shown. in, Figure 4 The medium magnification is 2000 times. Depend on figure 2 with Figure 4 It can be seen that analzem has good crystallinity, the crystallinity is about 75%, and the crystal content is 94.7%. Compared with the ideal analzem grains, other impurities are adsorbed on the crystal surface, which is ...

example 2

[0047] (1) Press n(SiO 2 ):n(NaOH):n(A1 2 o 3 ):n(H 2 (0)=14:28:1:500, take a certain amount of illite powder, Na 2 SiO 3 9H 2 O and NaOH were placed in a hydrothermal reaction kettle, dissolved with an appropriate amount of industrial water, aged for 2 hours under stirring conditions until a uniform suspension of the reaction material was obtained, the material was put into a closed reaction kettle, and crystallized at 200°C for 48 hours;

[0048] (2) The obtained product was washed 4 times with industrial water until the pH was neutral, dried at 60° C. for 8 hours, and pulverized to obtain the desired product. Its XRD spectrum is as image 3 As shown, its SEM spectrum is shown as Figure 5 shown. in, Figure 5 The medium magnification is 1000 times. Depend on image 3 with Figure 5 It can be seen that the crystallinity of analzem is good, the crystallinity is about 75%, and the crystal content is 89.3%. Compared with the ideal analzem grain, other impurities are...

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Abstract

The invention provides a method for synthesizing analcime from illite clay by a hydrothermal alkali method and analcime. The method for synthesizing analcime from illite clay by a hydrothermal alkali method comprises the following steps of: mixing illite powder with inorganic alkali, a silicon-containing auxiliary agent and a solvent, and aging to obtain a suspension of the reaction materials; performing hydro-thermal synthesis on the suspension of the reaction materials to obtain analcime suspension; and filtering the analcime suspension to obtain a filter cake and a filtrate, and washing and drying the filter cake to obtain analcime powder, the solvent being water or the filtrate. The method has the advantages that the technical conditions of the synthesis process are easy to realize, the synthesis method is simple in process and convenient to operate, the synthesized product is relatively high in purity and excellent in performance, the synthesis process is green and environment-friendly, and the generated filtrate can be recycled.

Description

technical field [0001] The invention relates to the technical field of novel inorganic functional materials, in particular to a method for synthesizing analcime from illite clay by hydrothermal alkali method and analcime. Background technique [0002] Analcite is a sodium aluminum silicate mineral with a framework structure, and is a microporous zeolite with irregular pores formed by 4, 6 and 8-membered rings. Analcime has the characteristics of short channels and wide distribution of active sites. It shows excellent catalytic performance in reactions such as oil refining and petrochemical industry. It has excellent adsorption properties for wastewater treatment and radioactive elements, and also has adsorption and separation effects for solutions containing lithium ions. However, natural analcime cannot meet the needs of industrial production due to its small reserves, low purity, and large particle size. Synthetic analcime needs to be used in application fields such as en...

Claims

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Application Information

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IPC IPC(8): C01B39/46C01B39/02C02F1/28C09K17/00
CPCC01B39/46C01B39/02C02F1/281C09K17/00C01P2002/72C01P2004/01C02F2101/20
Inventor 孙红娟周灿彭同江罗利明
Owner SOUTHWEAT UNIV OF SCI & TECH
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