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

摘要K. y.吴志文 这是根据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大卫贝尔顿博士一起工作。 这项工作的目标是填补汽车排放控制催化剂中钯-铑相互作用的基本理解方面的空白。 将平面模型催化剂的活性与高比表面积负载型钯铑催化剂的活性进行比较，以建立模型体系的相关性。 该模型催化剂的研究，使用超高真空表面分析，原位红外光谱，和扫描探针显微镜，以了解在各种条件下的钯和铑的相互作用。 这项研究是相关的设计更有效和寿命更长的催化转化器控制氮氧化物和碳氢化合物的汽车排放。 ***

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. ***