conversion of methane and carbon dioxide, and the hot water
saturation provided good conversion of CO2 and CH4 mixture.
Seeing that dry reforming is an important reaction in CPOM,
some researchers had paid their attention on CPOM with carbon
dioxide addition. Lee et al. [26] performed the tri-reforming of CH4
using CO2 as a feedstock, with emphasis on syngas production for
dimethyl ether (DME) synthesis. Eriksson et al. [27] experimentally
and numerically explored CPOM over three Rh-based catalysts
with large exhaust gas dilution (46.3 vol% H2O and 23.1 vol% CO2).
Michael et al. [28] experimentally studied the effects of water and
carbon dioxide addition on CPOM over three Rh-based catalysts at
short contact times. Donazzi et al. [29] performed CPOM in an
adiabatic lab-scale reformer over 2 wt% Rh/a-Al2O3 catalysts
supported on cordierite honeycombs, and the effect of adding
either CO2 or N2 to CH4/air mixtures was investigated at a constant
O2/CH4 ratio. The above literature has provided some impressive
results on hydrogen and syngas production from CPOM using
carbon dioxide as a reactant. However, detailed information of
CPOM in the reactor from numerical approach remains insufficient,
especially in CO2 consumption and conversion. It was reported that
Rh catalysts were more appropriate than Pt catalysts for syngas
production from CPOM [22]. For these reasons, the present study is
intended to simulate CPOM in an Rh-based catalyst bed using
carbon dioxide as a reactant. Particular emphasis is placed on the
effects of CO2/O2 and O2/CH4 ratios on the reaction. Details of the
influence of carbon dioxide addition on the reaction behavior of
CPOM in an Rh catalyst bed will be addressed.