Pulse microcalorimetry study of methane dry reforming reaction on ni/ceria-zirconia catalyst

For Ni/CeZrO catalyst prepared in supercritical isopropanol main features of methane dry reforming reaction mechanism were studied by the pulse microcalorimetric technique. The reaction scheme is described by a step-wise redox mechanism with independent stages of CH₄ transformation on Ni/support interface producing syngas with participation of support oxygen bridging species (the rate-limiting stage) and fast reoxidation of support sites by CO₂ yielding CO regenerating reactive oxygen species.