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Synthesis of magnesium-aluminum toluene-4-sulfonate sodium pillared hydrotalcite

A technology of sodium sulfonate and hydrotalcite, applied in aluminum compounds, chemical instruments and methods, inorganic chemistry, etc., can solve the problems of low efficiency, complicated operation, time-consuming and energy-consuming, etc. Effect

Active Publication Date: 2019-05-17
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 of magnesium-aluminum toluene-4-sulfonate sodium pillared hydrotalcite
  • Synthesis of magnesium-aluminum toluene-4-sulfonate sodium pillared hydrotalcite
  • Synthesis of magnesium-aluminum toluene-4-sulfonate sodium 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 digestion...

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 digestion tank, bo...

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Abstract

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. The method includes roasting the precursor magnesium-aluminum hydrotalcite to obtain a roasted product; weighing the roasted product and the intercalation agent toluene-4-sodium sulfonate in a microwave digestion tank, adding deionized water for removing carbon dioxide, sealing it, and placing it in a microwave digestion apparatus The synthesis is completed by medium microwave heating; washed with deionized water to remove carbon dioxide, dried in vacuum, ground and stored. The synthesis method established by the present invention seals the roasted product, intercalation agent and deionized water together in the digestion tank, without stirring and dissolving, it can realize the rapid synthesis from solid raw material to solid product, and at the same time, it does not need nitrogen protection and strong alkali to adjust the pH value , easy to operate, fast and efficient; the microwave heating method used in the invention is energy-saving and efficient, the digestion instrument has a pressure protection function and can realize online control of temperature and pressure, and has the advantages of high reproducibility and safe 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 Patents(China)
IPC IPC(8): C01F7/00
CPCC01P2002/72C01P2002/82C01F7/78
Inventor 丁立平蔡春平王丹红林春滢
Owner 丁立平
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