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- W3097251036 abstract "The structure of a Ni/Al2O3 monolithic catalyst after methanation reaction and its methanation performance were studied by taking analogue syngas of biomass gasification H2/CO/N2 as feed gas when the temperature ranged from 250 to 550 °C, and the weight hourly space velocity (WHSV) was between 6000 and 14,000 mL g–1 h–1. The Ni/Al2O3 catalysts using cordierite honeycomb ceramics as the substrate were prepared by dipping and sol–gel methods. The results show that the Ni/Al2O3 catalyst prepared by the dipping method (DIP-Ni/Al2O3) has better methanation performance than the Ni/Al2O3 catalyst prepared by the sol–gel method (SG-Ni/Al2O3) through many tests such as TEM, BET, XRD, H2-TPD, H2-TPR, and TG analysis. The DIP-Ni/Al2O3 catalyst exhibits the best methanation performance at 400 °C when the molar ratio of H2, CO, and N2 is 3/1/1 and the WHSV is 10,000 mL g–1 h–1. Under this condition, the CO conversion and CH4 selectivity are 98.6 and 90.9%, respectively. In addition, the methanation performance of the DIP-Ni/Al2O3 catalyst is relatively more stable, and the CO conversion and CH4 selectivity were basically maintained at around 90% within the experimental WHSV range. The influence of Ni content on the methanation performance of the DIP-Ni/Al2O3 catalyst can be seen in the order from high to low of methanation performance: 15% Ni, 20% Ni, and 10% Ni, and the maximum values of CO conversion and CH4 selectivity reach 96.8 and 96%, respectively, at 400 °C for 15% Ni/Al2O3." @default.
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- W3097251036 date "2020-10-29" @default.
- W3097251036 modified "2023-10-09" @default.
- W3097251036 title "Study on Methanation Performance of Biomass Gasification Syngas Based on a Ni/Al<sub>2</sub>O<sub>3</sub> Monolithic Catalyst" @default.
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- W3097251036 doi "https://doi.org/10.1021/acsomega.0c03536" @default.
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