The cost of delivering the payloads to space increases dramatically with distance and therefore missions to deep space place a strong emphasis on reducing launch weight and eliminating resupply requirements. The Vapor Phase Catalytic Ammonia Removal (VPCAR) system, which is being developed for water purification, is an example of this focus because it has no resupply requirements. A key step in the VPCAR system is the catalytic oxidation of ammonia and volatile hydrocarbons to benign compounds such as carbon dioxide, water, and nitrogen. Currently, platinum-based commercial oxidation catalysts are being used for these reactions. However, conventional platinum catalysts can convert ammonia (NH3) to NO and NO2 (collectively referred to as NOX), which are more hazardous than ammonia.In this SBIR Phase II project TDA Research (TDA) and Hamilton Sundstrand Space Systems International (HSSSI) developed ammonia oxidation catalysts that are selective for nitrogen and water and we are using these to optimize the oxidation reactor design. We have identified selective catalysts and we also carried out kinetic analyses of the most active materials. TDA then designed and constructed a pilot scale oxidation reactor that operates at the reduced pressures expected in the VPCAR system. In this paper, we summarize the results obtained in tests of catalysts prepared by both TDA and HSSSI.


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    Titel :

    Results of VPCAR Pilot Scale and System Level Tests for the Selective Oxidation of Ammonia to Nitrogen and Water


    Weitere Titelangaben:

    Sae Technical Papers


    Beteiligte:
    Thibaud-Erkey, Catherine (Autor:in) / Wickham, David (Autor:in) / Quinn, Gregory (Autor:in) / Engel, Jeffrey (Autor:in) / Yu, Jianhan (Autor:in) / Nalette, Tim (Autor:in)

    Kongress:

    International Conference On Environmental Systems ; 2005



    Erscheinungsdatum :

    11.07.2005




    Medientyp :

    Aufsatz (Konferenz)


    Format :

    Print


    Sprache :

    Englisch




    Results of VPCAR Pilot Scale and System Level Tests for the Selective Oxidation of Ammonia to Nitrogen and Water

    Wickham, D. / Engel, J. / Yu, J. et al. | British Library Conference Proceedings | 2005


    Development of a Pilot Scale Reactor for the Selective Oxidation of Ammonia to Nitrogen and Water

    Thibaud-Erkey, Catherine / Wickham, David T. / Engel, Jeffrey et al. | SAE Technical Papers | 2004


    Development of a Pilot Scale Reactor for the Selective Oxidation of Ammonia to Nitrogen and Water

    Wickham, D. T. / Engel, J. / Yu, J. et al. | British Library Conference Proceedings | 2004


    Catalysts for the Selective Oxidation of Ammonia to Nitrogen and Water

    Wickham, D. T. / Lind, J. / SAE | British Library Conference Proceedings | 2003


    Catalysts for the Selective Oxidation of Ammonia to Nitrogen and Water

    Wickham, D. T. / Lind, J. | SAE Technical Papers | 2003