Simultaneous utilization of CO2 and CH4 through dry reforming of methane with Ni–Ce@SiO2 catalyst: Parametric and simulation studies

Abstract

The dry reforming of methane (DRM) can reduce CO₂ and CH₄ simultaneously. This study utilized East Natuna gas fields, composed of 70 % CO₂ and 30 % CH₄, for syngas production via DRM using a Ni–Ce@SiO₂ catalyst. The kinetic parameters employed the Langmuir-Hinshelwood mechanism on the surface reaction as the rate-determining step. The simulation results provided an error margin below 5 %. A CO₂:CH₄ feed ratio of 70:30 at 700^oC achieves higher CH₄ conversion than a 50:50 ratio (97.10 % vs. 79.01 %), yet with lower H₂/CO ratio (0.68 vs. 0.92). Also, higher temperatures impact shorter reactor lengths and swifter times to reach stable conversion.