Catalyst Of High-Temperature For Methane Synthesis By Syngas

This paper developed a nickel-based catalysts of high-temperature for methane synthesis by syngas , It was stabilized at high temperature, medium pressure and high-moisture conditions, with high activity, selectivity and good resistance to carbon deposition.MgO was prepared to add in methane syngas catalysts of high-temperature for methane synthesis by syngas, by X-ray diffraction, strength testing, hydrothermal reaction, activity evaluation, et al Methods. Studying on catalyst of MgO added for performance and resistance to hydration. The results show that spinel structure was formed by adding MgO to improve the hydrothermal stability of the catalyst in the Ni-Al₂O₃ catalysts. On the basis of MgO added, examined the catalytic capability that added different amounts of La₂O₃ by physical adsorption, chemical adsorption, thermal analysis, X-ray diffraction, et al Methods. La₂O₃ can promote the active component in the dispersion carrier and ncrease the activity of the catalyst surface and improve the heat resistance of the catalyst; adding La₂O₃ can reduce the carrier of surface acidity and inhibit carbon deposition in the reaction, thus extend the life of the catalyst.Examined the effects of catalytic capability of high-temperature for methane synthesis by syngas via temperature, pressure and airspeed conditions. Compared crystalline structure, grain size, pore volume, surface area and other properties before and after the catalyst in the reaction. Experiments show that, catalysts of high-temperature for methane synthesis by syngas was operated flexibily in airspeed and had good thermal stability.