Aluminium hydroxide activeBecause of its adsorbency, acidic surfaces and thermal stability, often used as adsorbents, water purification agents, catalysts, etc., it is widely applied in areas such as medicine, chemicals, water quality purification, waste gas management, especially in response processes such as oil and hydrogen fragmentation, hydrogen refining, dehydrogenization and car tail gas purification. Let's see what methods are available for active aluminium hydroxide today。
Aluminium hydroxyl oxide carriers are formed using the following methods: perforation, low temperature sinter。
A. Perforatives: these can be classified according to their function as physical perforatives and chemical perforators。
Physical amplifiers are released by decomposition of gases during burning, and the advantage of releasing the space previously held is that the method is simple。
Chemical amplifiers are chemically active with blubber blubber, changing the size and dispersion of blubber blubber particles. The advantage is that aluminium oxide produces a good aperture effect。
B. Low-temperature sintering: the insertion of low-temperature sintering agents in the form of active aluminium hydroxide, and the regulation of the formulation and addition of the sintering agent, resulting in sintering reaction at lower temperatures, thus effectively regulating the hole structure of aluminium hydroxide。
At present, low-temperature sintering is a potentially powerful method for regulating the structure of the carrier hole。
3. Water thermal treatment
Water thermal treatment, also known as water vapour treatment, specifically by burning aluminium hydroxide after formation under the presence of water vapour, is a more common chemical amplification method. Changes in the structure of aluminium oxidation carriers during water thermal treatment are mainly due to the re-hydration process of the active aluminium hydroxide, which produces thinr blubber crystals of a particle size, resulting in larger particle gaps, increasing the aperture of the carrier and increasing the aperture as the processing temperature increases。
In preparing the active aluminium hydroxide, particular attention is given to controlling the appropriate temperature and time in its preparation process in order to ensure the nature of the active aluminium hydroxide carrier。
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