Document Type : Regular Article

Authors

1 Razi University

2 Chemical Engineering Departement,Faculty of engineering, Razi University

Abstract

In this work, the effect of Si/Al ratio on the bimetallic (Ni-Co) zeolite supported catalysts on Dry Reforming of Methane (DRM) has been studied. Samples are prepared with impregnation and sol-gel method and then calcined at 550℃ for 2hrs. The catalysts were characterized by XRD, XRF, FESEM, BET and TGA. All samples were tested in a micro reactor at three different temperatures (i.e.700, 750, and 800 ℃). Micro reactor test results showed that 800 ℃ is the proper temperature for DRM. The catalyst with 5% wt. Ni and 2.5%wt. Co supported on γ-Alumina had shown a higher H2/CO ratio than the other samples. For zeolite supported catalysts when Ni/Co=2/1, surface area, and pore volume decreased but H2/CO ratio increased with increasing Si/Al ratio. Reverse Water Gas Shift (WGS) reaction was not very active when the catalyst and support showed a basic property. Also, the stability of the catalysts have been tested for 30h time on stream.

Keywords

Main Subjects