IN SITU TPR XANES STUDY OF PARTIAL OXIDATION OF METHANE USING A NI-SUBSTITUTED HEXAALUMINATE CATALYST

摘要

Solid oxide fuel cells (SOFCs) have the capability of increasing the overall efficiency of conventional combustion engines over 30% in moderate to high-energy applications (>1 kW). The partial oxidation (POX) reaction converts O2 (limiting reactant) and diesel (or methane in this study) efficiently into CO and H2, which then electrochemically reacts the diesel into H2O, CO2, and energy in the SOFC. The rationale for this is that the hydrogen density of diesel is several times greater than methane or hydrogen even at high pressures (>200 atm). Another incentive is the efficient catalytic POX of diesel reduces CO emissions (via oxidation of CO), as well as CO2 from the increases in efficiency. Useful applications for POX of diesel are auxiliary power units (APU's) which supplement energy in a stationary diesel vehicle1, as well as other stationary power unit applications.