Ru single-atom catalyst anchored on sulfated zirconia for direct methane conversion to methanol

نویسندگان

چکیده

The direct CH4 conversion (DMC) to methanol is a challenging topic. In this study, the Ru/SZ (sulfated zirconia) single-atom catalysts (SACs) were synthesized and utilized DMC under mild conditions (70 °C). yield over SACs (18.32 µmol, TOF ≥ 80 h–1) significantly exceeded sum of yields SZ (0.67 µmol) Ru/ZrO2 (0.29 µmol), indicating that new active center was formed on SACs. Combined with results 13CH4 isotope labeling experiments various characterizations including pyridine adsorption infrared spectroscopy, electron paramagnetic resonance X-ray photoelectron an unprecedented synergy effect between super acid sites pictured: strong acidity could effectively promote decomposition H2O2 into •OH, Ruδ+ (δ > 4) adjacent Zrγ+-•OH (γ synergistically catalyze methanol.

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ژورنال

عنوان ژورنال: Chinese Journal of Catalysis

سال: 2023

ISSN: ['0253-9837', '1872-2067']

DOI: https://doi.org/10.1016/s1872-2067(22)64191-3