Morphology, Activation, and Metal Substitution Effects of AlPO₄-5 for CO₂ Pressure Swing Adsorption.

ABSTRACT: Aluminophosphate, AlPO₄-5, an AFI zeotype framework consisting of one-dimensional parallel micropores, and metal-substituted AlPO₄-5 were prepared and studied for CO₂ adsorption. Preparation of AlPO₄-5 by using different activation methods (calcination and pyrolysis), incorporation of different metals/ions (Fe, Mg, Co, and Si) into the framework using various concentrations, and manipulation of the reaction mixture dilution rate and resulting crystal morphology were examined in relation to the CO₂ adsorption performance. Among the various metal-substituted analogs, FeAPO-5 was found to exhibit the highest CO₂ capacity at all pressures tested (up to 4 bar). Among the Fe-substituted samples, xFeAPO-5, with x being the Fe/Al

SUBMITTER: Papageorgiou A 

PROVIDER: S-EPMC7573157 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature