Alumina supported cobalt nitride [Co 4 N-Al 2 O 3 (HT)] with high cobalt loading has been prepared for the first time from Co-Al hydrotalcite precursors. The formation of the Co 4 N phase was confirmed by XRD, H 2 -TPR, and XPS. Compared with Co 4 N/Al 2 O 3 (IMP) prepared by conventional impregnation and nitriding, the hydrotalcite derived catalyst exhibited a much better activity for hydrazine decomposition as consequence of higher dispersion of active species.
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