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Zirconium phosphates and sulfophosphonates intercalated by guanidine – synthesis, characterization and ionic conductivity

Authors: Plecháček Tomáš | Beneš Ludvík | Melánová Klára

Year: 2025

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Zirconium phosphates and sulfophosphonates intercalated by guanidine – synthesis, characterization and ionic conductivity	In this work, intercalates of guanidine into α- and γ-zirconium phosphates and α- zirconium phosphonates (4-sulfophenylphosphonate, 2-sulfoethylphosphonate) were prepared using guanidine chloride or carbonate by various methods (hydrothermal synthesis, host exfoliation). The products were characterized by powder X-ray diffraction, elemental analysis, IR spectroscopy and their ionic conductivity was measured. Guanidine can be intercalated into zirconium sulfophenylphosphonates using both hydrochloride and carbonate at room temperature. For intercalation into zirconium phosphates, it is better to use guanidinium carbonate. All the intercalates contain about one guanidine molecule and one water molecule per formula unit and the presence of protonated guanidine in the interlayer space was confirmed by IR spectroscopy. The highest ionic conductivity was obtained for zirconium 2-sulfoethylphosphonate intercalate, the lowest one for γ-zirconium phosphate intercalate. The temperature dependence of conductivity was measured for both guanidine intercalated phosphonates.	Zirconium; phosphates; sulfophosphonates; intercalated; guanidine; synthesis; characterization; and; ionic; conductivity