Continuous flow photoassisted CO2 methanation

Abstract

Photoassisted CO₂ methanation using Ni–Al₂O₃/SiO₂ as a photoresponsive catalyst has been carried out at 225 °C under continuous flow conditions achieving up to 3.5% conversion of CO₂ with complete selectivity to CH₄ under 2327 W m⁻² irradiation for a contact time of 1.3 s. An apparent quantum yield of 0.11 was estimated for the continuous flow process.