%0 Journal Article %T An Investigation into the Effect of Hydrotalcite Calcination Temperature on the Catalytic Performance of Mesoporous Ni-MgO-Al2O3 Catalyst in the Combined Steam and Dry Reforming of Methane %J Iranian Journal of Oil and Gas Science and Technology %I Petroleum University of Technology %Z 2345-2412 %A Roohollahi, Gholamreza %A Ehsani, Mohammadreza %D 2019 %\ 10/01/2019 %V 8 %N 4 %P 64-84 %! An Investigation into the Effect of Hydrotalcite Calcination Temperature on the Catalytic Performance of Mesoporous Ni-MgO-Al2O3 Catalyst in the Combined Steam and Dry Reforming of Methane %K Combined Steam and Dry Reforming %K MgO-Al2O3 %K Mesoporous %K Hydrotalcite-derived Catalysts %R 10.22050/ijogst.2018.132105.1456 %X Several mesoporous nickel-based catalysts with MgO-Al2O3 as the catalyst support were prepared using a co-precipitation method at a constant pH. The supports were prepared from the decomposition of an Mg-Al hydrotalcite-like structure which had already been prepared with Mg/Al=1. Prior to impregnating 10 wt.% nickel on the supports, the precursor was decomposed at several temperatures of 500, 600, 700, and 800 °C in order to elucidate the effect of calcination temperature on the physical and chemical characteristics of Mg-Al mixed oxides and the ultimate catalytic performance of the synthesized catalysts in the combined steam and dry reforming (CSDRM). The catalyst the precursor of which was calcined at 700 °C shows an excellent nickel dispersion and the highest activity among the other samples. It also exhibits the most stable performance during the long-term 36-hour run with high resistance against coke formation in the harsh condition of CSDRM. %U https://ijogst.put.ac.ir/article_101905_6299b39f54ace8bb872b1d5928d0c0f6.pdf