Langyou Chemical
SUPPLEMENTS
Calcining Aluminum Chloride Hexahydrate
Calcination of aluminum chloride hexahydrate as the core
Someone wants to use aluminum chloride hexahydrate ($AlCl_ {3}\ cdot6H_ {2} O $) for calcination. This process needs to be paid attention to in detail, because the heating of aluminum chloride hexahydrate is not just a change of water loss.
When calcined, the crystalline water in aluminum chloride hexahydrate gradually escapes. However, it should be understood that aluminum chloride has hydrolytic properties. Under the action of water, aluminum hydroxide and hydrogen chloride can be formed. In the calcination environment, the water evaporates and the hydrolysis reaction becomes active. Hydrogen chloride gas is volatile and dissipates in the surrounding space.
If you want to obtain pure anhydrous aluminum chloride, the conditions of calcination are the key. The temperature needs to be precisely controlled, not too high, so as to prevent the further decomposition of aluminum hydroxide into aluminum oxide; nor too low, so that the crystal water is difficult to remove and the hydrolysis reaction cannot be properly guided. The creation of the atmosphere should not be ignored. It is better to choose a dry atmosphere with inhibition of hydrolysis to prevent the formation of too much aluminum hydroxide.
This calcination move is related to the ratio of materials and the selection of equipment. The selected calcination apparatus needs to be able to withstand the corresponding temperature and facilitate gas escape and material turnover to ensure a uniform reaction. During operation, when the material changes are carefully observed step by step, and the conditions are adjusted in a timely manner, the desired purpose can be achieved, and the required product can be obtained, so that the aluminum chloride hexahydrate can be calcined and converted into a substance that meets the requirements.
Someone wants to use aluminum chloride hexahydrate ($AlCl_ {3}\ cdot6H_ {2} O $) for calcination. This process needs to be paid attention to in detail, because the heating of aluminum chloride hexahydrate is not just a change of water loss.
When calcined, the crystalline water in aluminum chloride hexahydrate gradually escapes. However, it should be understood that aluminum chloride has hydrolytic properties. Under the action of water, aluminum hydroxide and hydrogen chloride can be formed. In the calcination environment, the water evaporates and the hydrolysis reaction becomes active. Hydrogen chloride gas is volatile and dissipates in the surrounding space.
If you want to obtain pure anhydrous aluminum chloride, the conditions of calcination are the key. The temperature needs to be precisely controlled, not too high, so as to prevent the further decomposition of aluminum hydroxide into aluminum oxide; nor too low, so that the crystal water is difficult to remove and the hydrolysis reaction cannot be properly guided. The creation of the atmosphere should not be ignored. It is better to choose a dry atmosphere with inhibition of hydrolysis to prevent the formation of too much aluminum hydroxide.
This calcination move is related to the ratio of materials and the selection of equipment. The selected calcination apparatus needs to be able to withstand the corresponding temperature and facilitate gas escape and material turnover to ensure a uniform reaction. During operation, when the material changes are carefully observed step by step, and the conditions are adjusted in a timely manner, the desired purpose can be achieved, and the required product can be obtained, so that the aluminum chloride hexahydrate can be calcined and converted into a substance that meets the requirements.
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