High performance Ru-doped Sr0.90La0.10TiO3 catalyst for CH4 dry reforming

The reduction of atmospheric CO ₂ emissions is considered fundamental to reduce global warming. High-temperature fuel cells coupled with CH ₄ reforming represent a promising solution that can utilize biogas for sustainable energy production and CO ₂ capture. However, achieving good performance and long operation time requires the development of highly durable and efficient catalysts. In this study, the authors report the synthesis and characterization of a Ru-doped perovskite-based catalyst, especially designed for enhanced long-term stability. The Ru-doped SLT catalyst exhibited remarkable stability, achieving high CH₄ and CO₂ conversion rates over extended operation. Notably, the catalyst demonstrated stable performance for over 1,300 hours and a reduction in performance of about 5% over 1,000 hours, which is significantly longer than other catalysts reported in the literature, many of which are limited to 500 hours or less. In addition, the Ru-doped Sr _0.90 La _0.10 TiO ₃ catalyst showed excellent resistance to carbon deposition, with no detectable coking observed throughout the duration of the test. These findings position Sr _0.90 La _0.10 Ti _1−x Ru _x O ₃ as a promising candidate for integration into high-temperature fuel cell systems, offering both long-term stability and high efficiency under dry reforming conditions.