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Preparation and characterization of new layered zirconium aminophosphonates

Authors: Melánová Klára | Beneš Ludvík | Smolík Jan

Year: 2025

Type of publication: ostatní - přednáška nebo poster

Page from-to: nestránkováno

Titles:

Language	Name	Abstract	Keywords
eng	Preparation and characterization of new layered zirconium aminophosphonates	Compound Zr(O3PC3H6NHCOCH3)2 with a basal spacing of 18.45 Å was prepared solvothermally from zirconium propoxide or acetylacetonate in the presence of acetic acid at 180 °C. Its IR spectrum shows bands characteristic for amides, which means that the amino group of the phosphonate reacted with acetic acid forming an amide during the synthesis of the sample. If the same reaction is done at 80°C, the product has a basal spacing of 19.5 Å and contains protonated amino groups and acetate anions. No formation of amide was observed by IR spectra. If the phenylboronic acid, which is not able to react with amino group, was used, the compound Zr(O3PC3H6NH2)2·2C6H5BO2H2 with the basal spacing of 23.52 Å was prepared at both temperatures. It was shown, that preparation of pure zirconium 3-aminopropylphosphonate from its hydrochloride form is difficult, but according to our preliminary experiments the samples containing acetate or phenylboronate anions could be used for an anion exchange.	Intercalatin; zirconium aminophosphonates