Nanosized SAPO-34 (100-500 nm) was synthesized from colloidal solutions in the presence of tetraethylammonium hydroxide as a template at different hydrothermal (HT) conditions carried out in conventional and microwave ovens. The smallest SAPO-34 particles (∼100 nm) were obtained from the colloidal solutions with a molar composition of 1 Al 2 O 3 :2 P 2 O 5 :0.6 SiO 2 :2 TEA 2 O:75 H 2 O using microwave energy. The stability and degree of polydispersity of the nanosized crystalline SAPO-34 product were determined by dynamic light scattering and zeta potential measurements in aqueous suspensions. The isoelectric point for the SAPO-34 particles is at pH ∼ 4 due to its acidity, which is dependent on the degree and distribution of silicon in the CHA-type framework. The effect of crystal size on the sorption properties of SAPO-34 crystals was studied by Argon physisorption at 87 K, where a high degree of textural porosity responsible for a large fraction of the total volume adsorbed is measured.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.