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The promotional effect of potassium in the reverse water gas shift reaction (RWGS) was studied for Pt/mullite catalyst. The addition of potassium on Pt/mullite significantly enhanced the CO2 conversion and hindered the formation of methane as a by-product. The turnover frequency (TOF) at 340°C was enhanced by potassium up to 7 times that of Pt/mullite. TEM observations indicated a slight Pt particle...
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