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Method for producing aluminum-containing Magadiite phyllosilicate at tiled sheet layer state

A layered silicate and flat sheet technology, applied in the direction of silicate, aluminum silicate, etc., can solve problems such as increased difficulty

Active Publication Date: 2020-05-05
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the combination between the layers of the aluminum-containing Magadiite layered silicate is more firm. In addition to the influence of electrostatic attraction, in order to avoid the formation of miscellaneous crystals, the synthesis of aluminum-containing Magadiite layered silicate is often used Synthetic conditions of low temperature and long reaction time, which also greatly increase the difficulty of converting spherical or cauliflower-shaped aluminum-containing Magadiite phyllosilicates into flat sheets

Method used

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  • Method for producing aluminum-containing Magadiite phyllosilicate at tiled sheet layer state
  • Method for producing aluminum-containing Magadiite phyllosilicate at tiled sheet layer state
  • Method for producing aluminum-containing Magadiite phyllosilicate at tiled sheet layer state

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Experimental program
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Effect test

Embodiment 1

[0042] 8.8g NaF, 0.86g NaAlO 2 , 49g 30wt% NaOH aqueous solution and 288ml water were evenly mixed, then added 300g 50wt% PEG 300 (polyethylene glycol with an average molecular weight of about 300), stirred for 1 hour, then slowly added 242ml 40% silica sol under vigorous stirring solution. After stirring for 2 hours, it was transferred to a closed reaction vessel and reacted at 160°C for 78 hours. After the reaction is completed, it is separated, washed with deionized water, and dried, and is identified as Magadiite layered silicate by XRD, with a silicon-aluminum ratio of about 200. The product is named Mag-1, and the electron microscope photos are as follows: figure 1 . Depend on figure 1 It can be seen that most of the prepared aluminum-containing Magadiite phyllosilicates are spherical or cauliflower-like sheet aggregates.

[0043] Take Mag-1, 1g, add 500g of 0.05mol / L hydrochloric acid solution, ultrasonic frequency 20KHz, power 80W, water bath temperature 40°C, ult...

Embodiment 2

[0045] 9.0g NaF, 0.44g NaAlO 2 , 49g 30wt% NaOH aqueous solution and 288ml water were evenly mixed, then added 300g 50wt% PEG 300 (polyethylene glycol with an average molecular weight of about 300), stirred for 1 hour, then slowly added 240ml 40% silica sol under vigorous stirring solution. After stirring for 2 hours, it was transferred to a closed reactor and reacted at 160°C for 91 hours. After the reaction was completed, it was separated, washed with deionized water, and dried, and was identified as Magadiite phyllosilicate by XRD, with a silicon-aluminum ratio of about 400. The product is named Mag-2, and the electron microscope photos are as follows: figure 2 . Depend on figure 2 It can be seen that most of the prepared Magadiite phyllosilicates are spherical or cauliflower-like sheet aggregates.

[0046]Take Mag-2, 1g, add 20g of 0.8mol / L hydrochloric acid solution, ultrasonic frequency 40KHz, power 200W, water bath temperature 80°C, ultrasonic for 30 minutes. Af...

Embodiment 3

[0052] The sonic-H-1 prepared by the method of Example 1, 1g, was ultrasonically repeated twice according to the conditions described in Example 1, that is, 500g of 0.05mol / L hydrochloric acid solution was added, the ultrasonic frequency was 20KHz, the power was 80W, and the temperature of the water bath was 40°C , sonicated for 4 hours. The product is named sonic-H-1(3) after filtration and drying, and the electron microscope photo is as follows Image 6 .

[0053] Depend on Image 6 It can be seen that most of the sheets of Magadiite phyllosilicate have been distributed flatly, and the spherical or cauliflower-like aggregates have almost disappeared.

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Abstract

The invention relates to a method for preparing aluminum-containing Magadiite phyllosilicate at tiled sheet layer state, and mainly solves the problem that the application of the aluminum-containing Magnesite phyllosilicate in the fields of catalysis, adsorption separation and the like is limited due to the fact that most of the sheet layers of the aluminum-containing Magnesite phyllosilicate arein an aggregated state rather than a tiled state in the prior art. According to the method, an aluminum-containing Magadiite phyllosilicate is added into a hydrochloric acid solution, and then ultrasonic treatment is carried out, so that the proportion of the aluminum-containing Magadiite phyllosilicate at tiled sheet layer state is greatly increased, and the technical problem is well solved. According to the method, the application prospect of the Magadiite phyllosilicate in the fields of catalysis, adsorption separation and the like is improved.

Description

technical field [0001] The present invention relates to a process for the preparation of flat sheet aluminum-containing Magadiite phyllosilicates. Background technique [0002] Magadiite is a layered silicate material with the chemical formula Na 2 O·14SiO 2 9H 2 O, where Na can also be replaced by other alkali metal elements, such as K, Rb and Cs, etc., and Si can also be partially replaced by other elements, generally trivalent elements, including B, Al, Fe and Ga. The interlayer spacing of Magadiite phyllosilicates is in Because of its large interlayer distance, it can allow larger molecules to freely enter and exit between its layers, so it has broad application prospects in adsorption, catalysis, and preparation of inorganic-polymer symbiosis. [0003] Magadiite phyllosilicates can be obtained from natural minerals or artificially synthesized. Magadiite phyllosilicates obtained from the above sources are mostly spherical or cauliflower aggregates, and most of them...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B33/26
CPCC01B33/28C01P2004/03
Inventor 陶伟川袁志庆
Owner CHINA PETROLEUM & CHEM CORP
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