Partial oxidation of methane to syngas over SmCoO3-derived catalysts: the effect of the supercritical fluid assisted modification of the perovskite precursor

Syngas is crucial raw for the production of hydrogen-rich gas for green energy and for various petrochemical processes. Herein, we report the Syngas production via partial oxidation of methane (POM) on new SmCoO3-derived catalysts produced from simple in-dividual precursor. Precursor modified by supercritical antisolvent precipitation (SAS) involving supercritical CO2 yields SmCoO3 with finer grains, and the catalytic activity of respective Co/Sm2O3 composite formed in situ during POM is considerably enchanced. This catalyst does not undergo coking, and provides CO and H2 yields of 75-88% for 55 h at 900 degrees C, thereby being the most efficient POM catalysts derived from non-substituted LnCoO3. Thus, the prospects of exploiting SAS modification of the precursor for SmCoO3 to enhance the catalytic activity of the daughter Co/Sm2O3 composites are demonstrated for the first time. Given the overall simplicity in production, studied Co/Sm2O3 composites can also be convenient systems for further development of POM catalysts.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

This study reports the production of Syngas through partial oxidation of methane (POM) using new SmCoO3-derived catalysts. The catalysts, derived from simple individual precursors modified by supercritical antisolvent precipitation (SAS), exhibit enhanced catalytic activity. The Co/Sm2O3 composites formed in situ during POM do not undergo coking and provide high CO and H2 yields. This research demonstrates the potential of utilizing SAS modification to enhance the catalytic activity of SmCoO3-derived catalysts and suggests the studied composites as convenient systems for further development of POM catalysts.