Continuous-Flow Sunlight-Powered CO2 Methanation Catalyzed by γ-Al2O3-Supported Plasmonic Ru Nanorods
نویسندگان
چکیده
Plasmonic CO2 methanation using γ-Al2O3-supported Ru nanorods was carried out under continuous-flow conditions without conventional heating, mildly concentrated sunlight as the sole and sustainable energy source (AM 1.5, irradiance 5.5–14.4 kW·m−2 = suns). Under 12.5 suns, a conversion exceeding 97% achieved with complete selectivity towards CH4 stable production rate (261.9 mmol·gRu−1·h−1) for at least 12 h. The showed an exponential increase increasing light intensity, suggesting that process mainly promoted by photothermal heating. This confirmed apparent activation of 64.3 kJ·mol−1, which is very similar to obtained reference experiments in dark (67.3 kJ·mol−1). flow influence studied 14.4 achieving plateau 264 µmol min−1 (792 constant catalyst bed temperature approximately 204 °C.
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ژورنال
عنوان ژورنال: Catalysts
سال: 2022
ISSN: ['2073-4344']
DOI: https://doi.org/10.3390/catal12020126