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Mg–Al hydrotalcites with different Mg/Al molar ratios were prepared and characterized by XRD, FT-IR, SEM and BET analyses. The calcined hydrotalcite with Mg/Al molar ratio of 4.0 (LDO Mg/Al 4.0) exhibited the highest catalytic activity in the synthesis of propylene glycol methyl ether (PM). The catalytic activity relating to the amount of the basic sites and crystallinity depended on the Mg/Al molar...
This work reports how a novel macro-porous silica foam thin layer, applicable as a new catalyst support with high porosity, can be produced via spheres templating method. Three-dimensional close-packed crystals of polystyrene (PS) spheres were assembled on a porous alumina disk via vacuum filtration. The PS templates were filled with a silica colloidal solution, after annealing and adsorption of a...
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