Kinetic analysis of rate data for dry reforming of methane

MARÍA MARTHA BARROSO QUIROGA; ADOLFO EDUARDO CASTRO LUNA

INDUSTRIAL & ENGINEERING CHEMICAL RESEARCH

American Chemical Society

Año: 2007 vol. 46 p. 5265 - 5270

0888-5885

The kinetics of the CO2 reforming of methane was investigated on a Ni-Rh-Al2O3 catalyst. Twenty-seven mechanistic models were considered and fitted to the experimental data by numerically integrating the rate equation of the dry reforming of methane reaction. A thermodynamic analysis showed that the reverse water gas shift reaction operates in or very close to thermodynamic equilibrium. A strategy of model discrimination and parameter estimation led to a model that considers CO2 molecular adsorption, CH4 dissociative adsorption, and its surface chemical reaction as the rate-determining step. The parameter estimates in the resulting model are statistically significant and thermodynamically consistent. and its surface chemical reaction as the rate-determining step. The parameter estimates in the resulting model are statistically significant and thermodynamically consistent. mechanistic models were considered and fitted to the experimental data by numerically integrating the rate equation of the dry reforming of methane reaction. A thermodynamic analysis showed that the reverse water gas shift reaction operates in or very close to thermodynamic equilibrium. A strategy of model discrimination and parameter estimation led to a model that considers CO2 molecular adsorption, CH4 dissociative adsorption, and its surface chemical reaction as the rate-determining step. The parameter estimates in the resulting model are statistically significant and thermodynamically consistent. and its surface chemical reaction as the rate-determining step. The parameter estimates in the resulting model are statistically significant and thermodynamically consistent. 2 reforming of methane was investigated on a Ni-Rh-Al2O3 catalyst. Twenty-seven mechanistic models were considered and fitted to the experimental data by numerically integrating the rate equation of the dry reforming of methane reaction. A thermodynamic analysis showed that the reverse water gas shift reaction operates in or very close to thermodynamic equilibrium. A strategy of model discrimination and parameter estimation led to a model that considers CO2 molecular adsorption, CH4 dissociative adsorption, and its surface chemical reaction as the rate-determining step. The parameter estimates in the resulting model are statistically significant and thermodynamically consistent. and its surface chemical reaction as the rate-determining step. The parameter estimates in the resulting model are statistically significant and thermodynamically consistent. 2 molecular adsorption, CH4 dissociative adsorption, and its surface chemical reaction as the rate-determining step. The parameter estimates in the resulting model are statistically significant and thermodynamically consistent.