Preparation method of petaloid sodalite at room temperature

A room temperature, petal technology, applied in chemical instruments and methods, crystalline aluminosilicate zeolite, aluminum silicate, etc., can solve the problems of high energy consumption, high temperature, high cost, etc., and achieve good crystallinity, short time consumption, low cost effect

Active Publication Date: 2017-11-24
XUCHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims at the disadvantages of high temperature, high energy consumption and high cost in existing production, and provides a method for preparing petal-shaped sodalite at room temperature without using organic additives

Method used

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  • Preparation method of petaloid sodalite at room temperature
  • Preparation method of petaloid sodalite at room temperature

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Experimental program
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Effect test

Embodiment 1

[0030] The preparation method of petal-shaped sodalite under room temperature of the present invention comprises the following steps:

[0031] (1) Weigh 2.21g of sodium aluminate and 4.56g of sodium hydroxide into the beaker, then add 20.50g of deionized water, and heat and stir to completely dissolve the raw materials to make solution A;

[0032] (2) Weigh 5.68g of sodium silicate nonahydrate and add it to another beaker, then add 25.12g of deionized water, and heat and stir to completely dissolve the raw materials to make solution B;

[0033] (3) Slowly add solution B to solution A, and stir rapidly to make it evenly mixed to form a silica-alumina gel mixture;

[0034] (4) Transfer the silica-alumina gel mixture to a polytetrafluoroethylene reaction kettle, place it in a water bath, set the temperature of the water bath to 25°C, and crystallize for 10 hours;

[0035] (5) After the reaction is completed, take out the reaction kettle, filter the crystallized reaction mixture ...

Embodiment 2

[0037] The preparation method of petal-shaped sodalite under room temperature of the present invention comprises the following steps:

[0038] (1) Weigh 3.76g of aluminum sulfate and 4.78g of sodium hydroxide into the beaker, then add 20.50g of deionized water, and heat and stir to completely dissolve the raw materials to make solution A;

[0039] (2) Weigh 5.39g of sodium silicate nonahydrate and add it to another beaker, then add 20.85g of deionized water, and heat and stir to completely dissolve the raw materials to make solution B;

[0040] (3) Add solution B slowly to solution A, and stir rapidly to make it mix evenly to form a silica-alumina gel mixture;

[0041] (4) Transfer the silica-alumina gel mixture to a polytetrafluoroethylene reaction kettle, place it in a water bath, set the temperature of the water bath to 25°C, and crystallize for 10 hours;

[0042] (5) After the reaction is completed, take out the reaction kettle, filter the reaction mixture with suction, a...

Embodiment 3

[0044] The preparation method of petal-shaped sodalite under room temperature of the present invention comprises the following steps:

[0045] (1) Weigh 1.72g of aluminum hydroxide and 4.78g of sodium hydroxide into a beaker, then add 20.50g of deionized water, and heat and stir to completely dissolve the raw materials to make solution A;

[0046] (2) Weigh 5.68g of sodium silicate nonahydrate and add it to another beaker, then add 24.68g of deionized water, and heat and stir to completely dissolve the raw materials to make solution B;

[0047] (3) Add solution B slowly to solution A, and stir rapidly to make it mix evenly to form a silica-alumina gel mixture;

[0048] (4) Transfer the silica-alumina gel mixture to a polytetrafluoroethylene reaction kettle, place it in a water bath, set the temperature of the water bath to 25°C, and crystallize for 10 hours;

[0049] (5) After the reaction is completed, take out the reaction kettle, filter the reaction mixture with suction, a...

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Abstract

The invention discloses a preparation method of petaloid sodalite at room temperature and belongs to the technical field of zeolite materials. The method comprises the following steps: weighing sodium hydroxide and an aluminum source, adding deionized water, and heating and stirring the mixture till the raw materials are fully dissolved to prepare a solution A; weighing a silicon source, adding deionized water, and heating and stirring the mixture till the raw materials are fully dissolved to prepare a solution B; uniformly mixing the solutions A and B; crystallizing the mixture at room temperature; and after crystallization, washing the mixture till the pH of the washing solution is 8-9, and drying the filter cake at 80-120 DEG C for 12-36h to obtain sodalite. The preparation method disclosed by the invention is performed at room temperature, and is mild in condition, free of organic additives and pollution-free; the preparation method is simple in synthesizing step, short in consumed time and low in cost; and the product is high in crystallizing property and high in purity, and the synthesized sodalite has a shape of sodalite, so that the adsorptive action thereof is facilitated, and the sodalite is suitable for scaled production.

Description

technical field [0001] The invention relates to the technical field of zeolite materials, in particular to a method for preparing petal-shaped sodalite at room temperature. Background technique [0002] Sodalite is a zeolite composed of body-centered cubic SOD cages connected by a single four-membered and a single six-membered ring. It is the first zeolite molecular sieve to enter the field of inorganic functional materials. The aluminum-oxygen tetrahedron and the silicon-oxygen tetrahedron are interconnected to form a cubic cavity (called an SOD cage, with a volume of about 0.150nm 3 ) three-dimensional framework, the cage can be filled with small molecules, non-stoichiometric salts and metal "atom clusters". If sodalite filled with non-stoichiometric alkali metals is irradiated with high-energy radiation, it will be excited to produce photochromic phenomenon. The hydrogen absorption capacity of sodalite is higher than that of other zeolites, and it can theoretically reac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B39/02C01B33/26
CPCC01B33/2807C01B39/02C01P2002/72C01P2004/03
Inventor 张旭陈春春
Owner XUCHANG UNIV
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