Synthesis of hexagonal mesoporous aluminophosphate using Al dross

Abstract

Hexagonal mesoporous aluminophosphate (HMA) materials were synthesized using cetyltrimethylammonium bromide as a structure directing agent and industrial aluminum dross powder or Al(OH) 3 extracted from Al dross as an aluminum source at room temperature. XRD confirmed the presence of ordered mesostructures in all of the prepared HMA samples, and textural properties of the prepared samples were close to those of HMA prepared using pure chemicals. Uniform pore structure of the materials prepared using the industrial Al dross was confirmed by TEM, and N 2 adsorption-desorption isotherms of the HMA samples showed type IV isotherms with surface area in the range of 410-560 m 2 /g. Cr-containing HMA (CrHMA) samples were also prepared using industrial aluminum dross as an aluminum source, which demonstrated virtually identical catalytic performances in liquid phase tetralin oxidation reaction to those obtained over a CrHMA catalyst prepared using pure chemicals.

Characterization of Fly Ash from Polish Coal-Fired CHP Plants for NO2 Capture

“…Mesoporous silica synthesis from fly ash is anticipated to overcome the limitations of the microporous zeolite materials in the adsorptive removal of macromolecule pollutants [37]. These mesoporous materials can be used for CO 2 capture [38][39], adsorption [40], and catalysis [41][42][43].…”