Rate-Sensitive Experimental Catalytic Combustion Studies in Multicomponent Gas Environments

该研究的目标是生成一个完全表征催化流动的基准实验数据集，从而可以完善和验证纯金属和合金催化剂的综合表面化学机制。PI建议使用停滞流动环境来创建一个多物种的火焰后催化流场，在这个流场中可以进行测量并与模型预测进行比较。低压（~10-30 Torr）和旋转底物都可以用来增加气相物质向催化剂表面的传输，以实现与表面反应的强耦合。激光诱导荧光（LIF）将用于获得一系列关键反应物质的空间浓度分布，包括NO， CO， H， NO2和OH。研究了纯金属无负载催化剂铂、钯和铑以及合金和氧化物负载催化剂。这种测量的组合将有助于建模者制定一种机制，适用于常用的多组分催化剂材料。

Abstract 9634922 Glumac The goal of the proposed investigation is to generate a benchmark experimental data set of fully characterized catalytic flows in which comprehensive surface chemistry mechanisms for pure metal and alloyed catalysts can be refined and validated. The PI proposes to use a stagnation flow environment to create a multispecies post-flame catalytic flow field in which measurements can be made and compared with model predictions. Both a low pressure (~10-30 Torr) and a rotating substrate will be used to increase transport of gas phase species to the catalyst surface in order to achieve strong coupling to surface reactions. Laser induced fluorescence (LIF) will be used to obtain the spatial concentration profiles of a set of key reactive species including NO, CO, H, NO2, and OH. The pure metal unsupported catalysts platinum, palladium, and rhodium along with the alloyed and oxide supported catalysts will be investigated. This combination of measurements will assist modelers in formulating a mechanism valid for commonly-used multicomponent catalyst materials.