Catalytic performance of texturally improved Al-Mg mixed oxides derived from emulsion-synthesized hydrotalcites.

ABSTRACT: Mixed oxides of aluminum and magnesium derived from hydrotalcites were prepared by means of a sol-gel method mediated by an emulsified sol as pore template. The emulsion consisted of ethanol as the continuous phase and n-dodecane droplets as the dispersed phase, which was stabilized by the presence of the surfactant Pluronic P123. The use of such an emulsion was essential for obtaining materials with a porous structure that were assessed by mercury intrusion porosimetry and nitrogen physisorption. Additional characterization by NH₃ and CO₂ temperature programmed desorption confirmed that despite the enhancement of their textural properties, the number of acid and base sites was reduced in comparison to a reference and conventionally prepared Al-Mg mixed oxide,

SUBMITTER: Petrolini DD 

PROVIDER: S-EPMC9078284 | biostudies-literature | 2018 Feb

REPOSITORIES: biostudies-literature