Pillared rectorite layer structure

Typically, the pillared structure of montmorilIonites can be destroyed either by heating at 675°C for lOh or at 730°C for 2h in presence of steam (12). In addition to a high thermal stability in air, the ACH-rectorite under study retain most of their surface and cracking properties even after steamaging at 760°C/5h with 100 steam in a fluidized bed. Table 3. Steaming may have affected the iron distribution (migration) in the clay silicate layers. 

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