Zhejiang Shengfa Textiles Printing&Dyeing.,ltd , https://www.chzjsf.comThe unique mechanism of acid adsorption The superiority of hydrotalcite is mainly due to its special mechanism of adsorbing acid.
Hydrotalcite has significant anion exchange properties. For example, when HCl is present, the hydrotalcite's CO32- is easily exchanged with Cl-. Thus, chloride ions are adsorbed and fixed in a stable crystal structure.
Mg 4 .3Al 2 (OH) 12 .6CO 3 -mH 2 O+2HCl
->Mg 4 .3Al 2 (OH) 12 .6Cl 2 -CO 3 - mH 2 O+H 2 O+CO 2
The composition is insoluble in water and oil. In addition, a temperature of about 450 ° C is required for the release of Cl - from the structure.