Abstract
Zeolite Y was first synthesized in a nonionic emulsion system containing polyoxyethylated alkyl phenol surfactant and then characterized using XRD, SEM, FT-IR, TG-DSC, N2 adsorption and carbon content analysis techniques. Compared to the conventional zeolite Y, the reported Y sample presents extraordinarily agglomerated and coalesced structure with huge BET surface area of 646.85 m2/g. The huge surface area is explained by the removal of emulsion components occluded in the pore structure of the Y sample through calcination. Parameters such as emulsion components, emulsion composition, cosurfactant identity and reaction conditions were investigated. It is found the emulsion induces rapid growth, as crystallization of zeolite Y is completed after 4 h, compared to 16 h for the sample that does not contain the emulsion components. Emulsion composition and cosurfactant identity greatly influence the morphologies and crystallinity of the Y samples. Control experiments indicate all the components of the emulsion system are necessary for the rapid growth of zeolite Y. Finally, zeolite growth mechanism in the nonionic emulsion system is tentatively proposed.
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This work was supported by the National Natural Science Foundation of China (Grant No. 20606038) and Beijing Natural Science Foundation (Grant No.2093043).
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Zhang, Y., Jin, C., Shen, Y. et al. Nonionic emulsion-mediated synthesis and characterization of Zeolite Y. J Sol-Gel Sci Technol 54, 212–219 (2010). https://doi.org/10.1007/s10971-010-2185-x
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DOI: https://doi.org/10.1007/s10971-010-2185-x