For CO2 methanation nickel-based catalysts with honeycomb monoliths are required at the Chair of Process Technology and Industrial Environmental Protection at Montanuniversität Leoben. Prior to this work cordierite-based catalysts are prepared via wash-coating and subsequent wet impregnation with nickel nitrate under laboratory conditions. As low catalyst loadings are obtained for this material, an alternative structure based on aluminum oxide shows potential. Within the framework of this master thesis, a general coating procedure is developed based on an extensive literature review on Ni/Al2O3 catalyst systems. A preparation method consisting of four coating procedures with nickel nitrate and calcination at varying temperatures is introduced. Methanation experiments in different setups show the development from cordierite to alumina monoliths and their performance. For the alumina honeycombs increased nickel loadings are achieved. Consequently, they perform superior during catalytic methanation and a high COx conversion is obtained. The calcination temperature is identified as one of the most influential parameters on the performance and long-term stability of the honeycombs during CO2 methanation. Based on the results obtained within this work an overview on further developments of the coating procedures for alumina monolithic structures is given, to obtain highly loaded and active catalyst systems.