Finds enhanced methane conversion in low-temperature oxidative coupling using a specialized catalyst, suggesting improved chemical production methods.
The oxidative coupling of methane (OCM) reaction can directly convert CH₄ into C₂ (ethylene, ethane), which is vital for converting the world's abundant natural gas into valuable chemicals. Na-W-Mn/SiO₂ catalyst with high thermal stability and catalytic activity has been widely studied. However, the high temperature required for OCM reaction over Na-W-Mn/SiO₂ catalyst has restricted its application. The development of low-temperature OCM catalysts is currently one of the hot topics in research. This study regulated the MnOx-Na₂WO₄ interaction by adjusting the Mn loading, inducing changes in oxygen species and achieving low-temperature oxidative coupling on traditional Na-W-Mn/SiO₂ catalyst. At 750°C, the Na-W-5Mn/SiO₂ catalyst achieved a CH₄ conversion of 44.4%, C₂ selectivity of 45.9%, and a C₂ yield of 20.4%.
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Gao et al. (2026) studied this question.
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