The development of advanced catalytic technologies for the combustion of low‐concentration methane is crucial for minimizing unburned CH4 emissions, consequently improving the eco‐efficiency of natural gas vehicles and power plants. The integration of effective catalysts into existing systems with minimal modifications is of paramount importance. Porous ceramic composites offer a promising alternative to traditional powder catalysts due to their high surface area, excellent thermal stability, adjustable porosity, and prolonged catalytic durability. This study introduces a trace Pd–incorporated SnO2 porous ceramic catalyst (Pd/ SnO2) fabricated using the spark plasma sintering (SPS) technique. The synthesis process uses a NaCl salt template to create a porous structure and graphite to improve Pd loading and dispersion on the SnO2 surface. An optimized 10 wt.% graphitedecorated Pd/SnO2 porous ceramic catalyst, containing a trace Pd loading of 0.17 wt.%, achieved a low T90 of 427°C during methane reforming tests and maintained stable catalytic performance after multiple temperature cycling and over 900 min of continuous operation. Enhanced activity stems from two synergies: first, graphite‐mediated uniform PdO dispersion boosting active site accessibility and second, PdO–SnO2 interfacial charge transfer generating oxygen‐deficient sites, accelerating CH4 dissociation and stabilizing Pd2+ against deactivation. These findings highlight the potential of this approach for use in the development of durable and efficient ceramic composite–based catalysts for environmental applications.
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