Research Article |
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SYNTHESIS, CHARACTERIZATION AND CATALYTIC ACTIVITY OF TUNGSTOCOBALTATE-PILLARED ZnAlLAYERED DOUBLE HYDROXIDE
Bhabani S. Mohanta, Rita Das, Nigamananda Das. Abstract | | | | Tungstocobalate, (CoIIIW12O40) 5-, intercalated ZnAl-layered double hydroxide (ZnAl-CoW12) was prepared via rehydration of calcined ZnAl-LDH under nitrogen atmosphere. Characterization by chemical analysis together with powder XRD, FT-IR, TG-DTA and UV-VIS DRS provided evidence of intercalation of CoIIIW12O405-(58 wt. %) in the interlayer of LDH. The catalytic activity of ZnAl-CoW12 was evaluated for hydrogen peroxide mediated decolourisarion of methyl orange and oxidation of benzaldehyde to benzoic acid under varying reaction conditions. ZnAl-CoW12 was found effective for both the reactions and stable under the experimental conditions for repetitive use without any noticeable decrease in activity
Key words: Tungstocobalate; layered double hydroxide; intercalation; dye decolourisation; benzaldehyde oxidation.
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