CO2-SR technology using NiBa unsupported catalyst. Isotopic study of cyclic process of CO2 storage and in situ regeneration with CH4

The unsupported NiBa catalyst has been used in the CO2-SR (CO2 Storage and situ Regeneration with CH4) cyclic technology, which allows use of CO2 from combustion CH4 biogas order to produce enriched syngas streams. isotopic study transient regime, using 13CO2 CD4 instead 12CO2 CH4, respectively, performed discriminate different carbon hydrogen sources participation pathways involved whole process integrated capture regeneration CH4. dual functionality showed a high chemical retention capacity (around 0.15 mmol CO2·gcat-1) basic Ni-Ba intermetallic centers together through injection methane yielding H2-containing stream production. During storage stage, adsorption dissociative decomposition are main reactions Boudouard reaction, whereas step, was formed via reduction by besides dry reforming.