Thermal degradation of acetate-intercalated hydroxy double and layered hydroxy salts

Inorganic Chemistry
Everson Kandare, Jeanne M Hossenlopp

Abstract

Two hydroxy double salts (HDSs), zinc copper hydroxy acetate (ZCA) and zinc nickel hydroxy acetate (ZNA), and an analogous layered compound, zinc hydroxy acetate (ZHA), have been prepared by a coprecipitation method. The thermal degradation of these materials was characterized via thermogravimetric analysis (TGA), differential thermal analysis (DTA), and TGA coupled with Fourier transform infrared spectroscopy of gas-phase products, TGA-FTIR. Loss of physisorbed and interlayer H2O was observed between 50 and 150 degrees C for all compounds. Acetic acid, acetone, water, and CO2 were released at high temperatures with relative acetone yields found to be dependent on precursor identity, with very little formed from ZCA compared with ZHA and ZNA. Combined FTIR and XRD analysis of solid residues extracted at different points in the heating profile suggests that ketonization occurs via dissociative adsorption of acetic acid on ZnO surfaces. Nanometer-sized ZnO particles were formed from ZHA, showing slight preferential growth in the ZnO (002) lattice direction, while the presence of a second metal, Ni or Cu, served to retard ZnO crystallite growth at temperatures below 600 degrees C and eliminate preferential growth. ZCA leads to the...Continue Reading

References

Jul 21, 2006·The Journal of Physical Chemistry. B·Everson Kandare, Jeanne M Hossenlopp
Jul 21, 2006·The Journal of Physical Chemistry. B·Elsa E SileoAlberto E Regazzoni

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Citations

Dec 20, 2012·Inorganic Chemistry·Amir MoezziMichael Cortie
Jan 27, 2015·Chemical Communications : Chem Comm·Laurent SchlurGeneviève Pourroy
Sep 21, 2016·Journal of Materials Chemistry. B, Materials for Biology and Medicine·Abdessamad Y A KaassisGareth R Williams
Aug 30, 2008·Inorganic Chemistry·Bernardo MonteiroMartyn Pillinger
Jul 14, 2021·Dalton Transactions : an International Journal of Inorganic Chemistry·Margarita StrimaiteGareth R Williams
Apr 17, 2020·ACS Applied Materials & Interfaces·Débora Abrantes LealCláudia Eliana Bruno Marino

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