Novel perovskite-based catalysts for autothermal JP-8 fuel reforming

✍ Scribed by Peter Erri; Peter Dinka; Arvind Varma

• Publisher: Elsevier Science
• Year: 2006
• Tongue: English
• Weight: 495 KB
• Volume: 2006
• Category: Article
• ISSN: 1464-2859
• DOI: 10.1016/s1464-2859(06)71134-8

✦ Synopsis

Autothermal reforming is an attractive method for on-site production of hydrogen for use in proton-exchange membrane (PEM) fuel cells. The use of liquid hydrocarbons as feedstock, however, remains a challenge as these fuels cause severe coking of the currently available catalysts. In this work, cerium-and nickel-substituted LaFeO 3 perovskites were investigated as potential low-cost, coking-resistant catalysts for autothermal reforming of a JP-8 fuel surrogate. The high-surface-area complex oxides were prepared using aqueous (solution) combustion synthesis at fuel-rich conditions and characterized by BET and XRD techniques. The catalysts exhibited excellent stability during autothermal reforming at 775°C and 1 atm, with near-equilibrium hydrogen yield even at high GHSV values (130 000 h -1 ). The addition of cerium significantly improved coking resistance, attributed to improved oxygen ion conductivity, resulting in carbon oxidation on the catalyst surface.