MONO-AND BIMETALLIC N1 CATALYSTS PROMOTED BY CEO, AND RU FOR MIXED REFORMING OF METHANE

摘要

Monometallic Ni and bimetallic Ru-Ni catalysts supported on the aluminum oxide orAl^O^ modified by CeO^ were reoared using impregnation and subsequent impregnation method, respectively. The physicochemical properties of prepared catalysts were extensively studied using various characterization techniques such as X-ray diffraction, temperature-programmed reduction (TPR-HJ and temperature-programmed desorption of ammonia (TPD-NHJ. Activity tests performed in mixed reforming of methane reaction were carried out using a flow quartz reactor under atmospheric pressure. In this work the correlation between physicochemical properties of investigated catalysts with their catalytic properties in mixed reforming of methane. The obtained results showed that the reduc-ibiliry and acidity of the catalytic material are important factors, which have direct influence on the catalytic activity of the nickel and promoted nickel supported catalysts. The results confirmed that addition of ruthenium or CeO on the surface of monometallic 20%Ni/Al2O3 catalyst system facilitates NiO species reduction and improves the catalytic activity. The catalytic activity measurements confirmed the promotion effect of ruthenium or CeO2 on the catalytic activity of nickel catalysts. In both cases the higher conversion ofCO2 and CH4 were achieved.