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Investigation on the Suitability of Engelhard Titanium Silicate as a Support for Ni-Catalysts in the Methanation Reaction
oleh: Patrizia Frontera, Mariachiara Miceli, Francesco Mauriello, Pierantonio De Luca, Anastasia Macario
Format: | Article |
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Diterbitkan: | MDPI AG 2021-10-01 |
Deskripsi
Methanation reaction of carbon dioxide is currently envisaged as a facile solution for the storage and transportation of low-grade energies, contributing at the same time to the mitigation of CO<sub>2</sub> emissions. In this work, a nickel catalyst impregnated onto a new support, Engelhard Titanium Silicates (ETS), is proposed, and its catalytic performance was tested toward the CO<sub>2</sub> methanation reaction. Two types of ETS material were investigated, ETS-4 and ETS-10, that differ from each other in the titanium content, with Si/Ti around 2 and 3% by weight, respectively. Catalysts, loaded with 5% of nickel, were tested in the CO<sub>2</sub> methanation reaction in the temperature range of 300–500 °C and were characterized by XRD, SEM–EDX, N<sub>2</sub> adsorption–desorption and H<sub>2</sub>-TPR. Results showed an interesting catalytic activity of the Ni/ETS catalysts. Particularly, the best catalytic performances are showed by Ni/ETS-10: 68% CO<sub>2</sub> conversion and 98% CH<sub>4</sub> selectivity at T = 400 °C. The comparison of catalytic performance of Ni/ETS-10 with those obtained by other Ni-zeolites catalysts confirms that Ni/ETS-10 catalyst is a promising one for the CO<sub>2</sub> methanation reaction.