Endothermic Reforming Using Novel Catalysts Prepared by Exsolution
Abstract
Catalysts based on exsolution of Ni from Ni doped perovskites have demonstrated a high resistance to coking and are promising as catalysts for endothermic reforming of fuels in hypersonic aircraft. Here, we propose a detailed investigation of the exsolution phenomenon with a goal of achieving a fundamental understanding of the mechanisms behind metal exsolution and why the exsolved particles are coke tolerance. We will examine exsolution of various transitionmetal catalysts from different perovskites to determine how composition affects the exsolution process and the final catalyst properties. First principle, theoretical studies will guide the choices of metals and perovskites in the experimental studies. To enable detailed reaction studies of simple alkanes from exsolved metals, thin film perovskites will be prepared on high surface area supports by Atomic Layer Deposition (ALD). Thermodynamic, coulometric titration measurements will be performed to determine how exsolution affects metal reducibility. Model, flat samples will be prepared for spectroscopic investigation. The insights gained from this study will be used to prepare catalysts with optimal properties for endothermic reforming.
Document Details
- Document Type
- DoD Grant Award
- Publication Date
- Jan 14, 2022
- Source ID
- FA95501910326
Entities
People
- Raymond J Gorte
Organizations
- Air Force Office of Scientific Research
- United States Air Force
- University of Pennsylvania