Microkinetic deactivation studies on nickel supported catalyst for dry reforming of methane

摘要

In recent decades, greenhouse gases (GHG) such as CO2 and CH4 have been on the rise affecting climate change. Consequently, researchers have been studying on chemical reactions that are able to consume and convert GHG into useful resources. Dry reforming of methane is a heterogeneous catalytic reaction that consumes greenhouse gases such as CO2 and CH4 to produce syngas, CO and H2, which later becomes an essential feedstock for Fischer-Tropsch process. Various researchers due to its affordability have studied nickel-based catalyst and it exhibits excellent performance in DRM reaction. However, coke formation is a major issue concerning catalyst deactivation during the dry reforming reaction. Therefore, thermodynamic study based on Gibbs energy minimization is conducted to identify the reaction routes that favour carbon deposition. In addition, the deactivation mechanism of coke formation together with microkinetic modelling of dry reforming of methane on nickel catalyst is being developed.