Enhancement of hydrogen production performance of novel perovskite LaNi 0 . 4 Al 0 . 6 O 3 ‐δ supported on MOF A520 ‐derived λ‐Al 2 O 3

Abstract

Methanol steam reforming (MSR) is a promising method for hydrogen production from renewable energy. The effect of λ-Al2O3 support derived from metal-organic frameworks (MOFs) aluminum fumarate (A520) on the performance and stability of LaNi0.4Al0.6O3-δ for MSR is investigated. Results demonstrate that compared with LaNi0.4Al0.6O3-δ, LaNi0.4Al0.6O3-δ/λ-Al2O3 can achieve complete conversion of methanol and excellent thermal stability due to the higher SBET and strong interaction between the metal components and λ-Al2O3. Characterization results indicate that the LaNi0.4Al0.6O3-δ/λ-Al2O3 catalyst, which was not successfully reduced due to its robust structure, still has active sites for the MSR reaction. This characteristic of the catalyst has the potential to be applied for onboard in-situ hydrogen production, because it can shorten the time of hydrogen reduction process. Furthermore, the effects of catalytic temperature, feed water-methanol ratio, and liquid hourly space velocity on performance of LaNi0.4Al0.6O3-δ/λ-Al2O3 are studied in detail and the optimal conditions ​​are determined and applied for stability tests.