This paper aims to synthesize and test Mn-Sb/TiO2-CNT catalysts with different Sb/Mn molar ratios to be used in NH3-SCR reaction.

    Design/methodology/approach

    A series of Sb-loaded carbon nanotubes (CNTs)-based Mn/TiO2 catalysts were prepared by the incipient wetness co-impregnation method and tested for the selective catalytic reduction (SCR) of NOx with NH3.

    Findings

    The Sb-loaded Mn/TiO2-CNTs catalyst outperformed other catalysts and presented the highest activity in the temperature regime of 100–400°C. The catalyst loaded with Sb also showed good SO2 and H2O resistance and exhibited better thermal stability. A stepwise study of SO2 addition evidenced that Mn-Sb/TiO2-CNTs catalyst exhibited better SO2 resistance than the base catalyst Mn/TiO2, where the Sb doping greatly inhibited the sulphating of active phase of the catalyst.

    Originality/value

    In Sb-loaded catalysts, the formed SOx species fused with SbOx instead of MnOx. This favoured interaction of SO2 with SbOx successfully prevents the MnOx from being sulphated by SO2 which substantially improves the SO2 tolerance of Sb-loaded catalysts.


    Access

    Check access

    Check availability in my library

    Order at Subito €


    Export, share and cite



    Title :

    Sb-loaded MnOx/TiO2/CNTs catalysts for selective catalytic reduction of NOx: insight to the SO2 and H2O tolerance


    Contributors:

    Published in:

    Publication date :

    2024-07-09


    Size :

    9 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English




    Low Temperature Selective Catalytic Reduction of NOx over Vanadium-Based Catalysts

    Narkhede, V. / Kumar, D. / Cursetji, R.M. et al. | British Library Conference Proceedings | 2015


    Selective catalytic reduction

    Cucchi,C. | Automotive engineering | 2004


    Low Temperature Selective Catalytic Reduction of NOx over Vanadium-Based Catalysts

    Kumar, Dinesh / Cursetji, R M / Sidiquie, Touquire A et al. | SAE Technical Papers | 2015


    Urea selective catalytic reduction

    Lambert,C. / Vanderline,J. / Hammerle,R. et al. | Automotive engineering | 2002


    Catalysts for Lean-Burn Engine Exhaust Aftertreatment Using Hydrocarbon Selective Catalytic Reduction

    Blint, Richard J. / Schmieg, Steven J. / Sloane, Thompson M. | SAE Technical Papers | 2009