Simultaneous incorporation of palladium and zirconium ions in Mg–Al layered double hydroxides by co-precipitation
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Abstract
Abstract Simultaneous incorporation of palladium and zirconium ions in Mg–Al layered double hydroxides (LDHs) was attempted by co-precipitation. Mixed oxides were obtained by calcination at 500 °C. XRD patterns of as-synthesized samples showed the formation of well-crystallized LDHs at lower Zr contents. The CO 3 2− content of the solids has been determined to have information on the possible incorporation of Zr 4+ into the brucite layer of the hydrotalcites. The values obtained showed that Zr 4+ can incorporate into brucite sheets at Zr content lower than 10 mol%. SEM and TEM images indicated that the resulted LDHs with lower Zr content exhibited plate-like structure. Thermal calcination at 500 °C results in the formation of mixed oxides containing MgO, PdO, ZrO 2 crystallites and a solid solution formed by some of the Zr 4+ cations dissolving along with Al 3+ to MgO lattice.
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Research context
OpenAlex topics: Layered Double Hydroxides Synthesis and Applications · Magnesium Oxide Properties and Applications · Supercapacitor Materials and Fabrication
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References (25)
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