GOALI: Interaction of PD/Rh in Exhaust Catalysis: Probing Bimetallic Chemistry Using Model and Practical Catalysts

这是一个由GOALI计划授予的博士后工业奖学金。这是为了支持Haryani Permana博士在通用汽车北美研发中心与David Belton博士一起工作。努力的目标是填补空白，在汽车排放控制催化剂的钯铑相互作用的基本认识。将平面模型催化剂的活性与高表面积负载型钯铑催化剂的活性进行了比较，建立了模型体系的相关性。利用超高真空表面分析、原位红外光谱和扫描探针显微镜对模型催化剂进行了研究，以了解钯和铑在不同条件下的相互作用。这项研究与设计更有效和更长寿的催化转化器有关，用于控制汽车排放中的氮氧化物和碳氢化合物。＊＊＊

ABSTRACT K. Y. Simon Ng This is a postdoctoral industrial fellowship awarded under the GOALI program. It is to support Dr. Haryani Permana to work in the General Motors North American Research and Development Center with Dr. David Belton. The goal of the effort is to fill a gap in the fundamental understanding of palladium-rhodium interactions in automotive emission control catalysts. The activity of a planar model catalyst is compared with the high-surface-area supported palladium-rhodium catalyst to established the relevance of the model system. The model catalyst is studied using ultrahigh-vacuum surface analysis, in-situ infrared spectroscopy, and scanning probe microscopy to gain insight on the interactions of palladium and rhodium under various conditions. This research is relevant to the design of more effective and longer lived catalytic converters for control of nitrogen oxides and hydrocarbons in automotive emissions. ***