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Synthesis method of magnesium aluminum type methylbenzene-4-sodium sulfonate pillared hydrotalcite

A technology of sodium sulfonate and hydrotalcite, applied in the fields of aluminum compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of complex operation, low efficiency, time-consuming and energy consumption, etc., and achieve safe operation, simple operation, and reduced interference Effect

Active Publication Date: 2017-01-11
丁立平 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] Magnesium-aluminum toluene-4-sodium sulfonate pillared hydrotalcite (MgAl-TCS for short) is a kind of adsorbent with development and application prospects, but it is time-consuming and energy-consuming to synthesize by conventional roasting reduction method, complicated operation and low efficiency.

Method used

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  • Synthesis method of magnesium aluminum type methylbenzene-4-sodium sulfonate pillared hydrotalcite
  • Synthesis method of magnesium aluminum type methylbenzene-4-sodium sulfonate pillared hydrotalcite
  • Synthesis method of magnesium aluminum type methylbenzene-4-sodium sulfonate pillared hydrotalcite

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Experimental program
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Effect test

Embodiment 1

[0055] (1) Roasting: the precursor magnesium aluminum type hydrotalcite Mg 6 Al 2 (OH) 16 CO 3 4H 2 O is placed in a muffle furnace at a heating rate of 5°C

[0056] / min heated to a temperature of 500°C and roasted for 6 hours to obtain the roasted product Mg 6 Al 2 o 8 (OH) 2 ;

[0057] (2) Weighing: Weigh 11.711g of the intercalation agent toluene-4-sodium sulfonate and 7.236g of the roasted product Mg in a microwave digestion tank 6 Al 2 o 8 (OH) 2 , the amount ratio of the two substances is 3:1.

[0058] (3) Microwave crystallization hydrothermal synthesis: Boil deionized water and keep it for 30 minutes, then add 100mL to the above-mentioned microwave digestion tank with intercalation agent and roasted product, seal it, and place the microwave digestion tank in a microwave digestion instrument , microwave heating at 100°C for 30 minutes to complete the synthesis;

[0059] (4) Washing and drying: Pour out all the solids and liquids in the microwave tank, hea...

Embodiment 2

[0061] (1) Roasting: the precursor magnesium aluminum type hydrotalcite Mg 6 Al 2 (OH) 16 CO 3 4H 2 O is placed in a muffle furnace, heated to a temperature of 500°C at a heating rate of 5°C / min, and roasted for 5 hours to obtain the roasted product Mg 6 Al 2 o 8 (OH) 2 ;

[0062] (2) Weighing: Weigh 15.615g of the intercalation agent toluene-4-sodium sulfonate and 7.236g of the roasted product Mg in a microwave digestion tank 6 Al 2 o 8 (OH) 2 , the amount ratio of the two substances is 4:1.

[0063] (3) Microwave crystallization hydrothermal synthesis: Boil deionized water and keep it for 60 minutes, then add 100mL to the above-mentioned microwave digestion tank with intercalation agent and roasted product, seal it, and place the microwave digestion tank in a microwave digestion instrument , microwave heating at 180°C for 60 minutes to complete the synthesis;

[0064] (4) Washing and drying: Pour out all the solids and liquids in the microwave tank, heat, stir, ...

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Abstract

The invention belongs to the field of preparation of inorganic composite materials, and particularly relates to a synthesis method of magnesium aluminum type methylbenzene-4-sodium sulfonate pillared hydrotalcite. The method comprises the following steps: calcining precursor magnesium aluminum type hydrotalcite to obtain a calcined product; after weighing the calcined product in a microwave digestion tank and methylbenzene-4-sodium sulfonate as an intercalator, sealing, and carrying out microwave heating in a microwave digestion instrument to finish synthesis; and washing with deionized water in which carbon dioxide is removed, drying under vacuum, grinding and storing. By the synthesis method established by the invention, the calcined product, the intercalator and the deionized water can be sealed in the digestion tank together, quick synthesis from a solid raw material to a solid product can be realized without stirring and dissolving, meanwhile, nitrogen protection is not required, pH value does not require to be adjusted with strong base, and the method is simple and convenient to operate, and is speedy and efficient. A microwave heating mode used in the invention is energy-saving and efficient, the digestion instrument has a pressure protection function, temperature and pressure of the digestion instrument can be controlled in an online manner, and therefore, the digestion instrument has the advantages of high reproducibility and safety in operation.

Description

technical field [0001] The invention belongs to the field of preparation of inorganic composite materials, and in particular relates to a synthesis method of magnesium-aluminum toluene-4-sulfonate sodium pillared hydrotalcite. Background technique [0002] Layered double hydroxides (Layered Double Hydroxides, LDHS), also known as layered hydrotalcite, is a typical anionic layered material, and the typical representative is magnesium aluminum hydrotalcite (Mg 6 al 2 (OH) 16 CO 3 4H 2 O, referred to as MgAl-LDH), in which the hydroxide of magnesium and aluminum constitutes the laminate, and the carbonate ion is the anion between the laminates. Hydrotalcite-like compounds have the characteristics of the controllability of the hydroxide composition of the laminate, the controllability of the type and quantity of interlayer anions, and the controllability of the grain size and distribution; at the same time, this type of material has the characteristics of small size effect, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F7/00
CPCC01P2002/72C01P2002/82C01F7/78
Inventor 丁立平蔡春平陈学灿刘正才
Owner 丁立平
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