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  • Title: Novel Co-Mg-Al-Ti-O catalyst derived from hydrotalcite-like compound for NO storage/decomposition.
    Author: Cheng J, Wang X, Ma C, Hao Z.
    Journal: J Environ Sci (China); 2012; 24(3):488-93. PubMed ID: 22655363.
    Abstract:
    Catalysts of Co1.5Mg1.5/Al0.9Ti0.1O and Co1.5Mg1.5/A1O were successfully prepared by calcinations of corresponding hydrotalcite-like compounds at 800 degrees C for 4 hr. The derived oxides were of spinel phase and a small quantity of Ti substitution did not change the crystal purity. Their catalytic performance for the NO storage/decomposition was investigated. Ti incorporation enhanced the NO decomposition activity while has an opposite effect on the storage capacity of catalyst. In situ FT-IR spectra of the catalysts showed that the final adsorption species on the catalysts was coordinated nitrates/nitrites. In addition, NO storage/decomposition mechanism has been discussed on the basis of these observations.
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