Fig. 5: The performance of MgO as support.
From: Hydrogenation of different carbon substrates into light hydrocarbons by ball milling
a Conversion of activated carbon by different supports. Reaction conditions: 450 rpm, 7 hours of milling time, 170 bar of H2, 10 10 mm stainless steel balls, 50 mg of activated carbon, 200 mg of Fe, 300 mg of γ-Al2O3, SiO2, CeO2, TiO2 or MgO. b, Conversion of activated carbon with different initial hydrogen pressure. Reaction conditions: 450 rpm, 7 h of milling time, 5, 20, 80 or 170 bar of H2, 10 10 mm stainless steel balls, 50 mg of activated carbon, 200 mg of Fe, 300 mg of MgO. (For easier gas products collection, in the reaction under 5 bar of H2, in addition to 5 bar of H2, 25 bar of Ar was charged. The total pressure is 30 bar.). c Stability of Fe–MgO catalysts. Reaction conditions: 450 rpm, 6 h of milling time, 20 bar of H2, 10 10 mm stainless steel balls, 200 mg of Fe, 300 mg of MgO. In the first round, 50 mg activated carbon was added. In each subsequent round, an equal amount of activated carbon was newly added to replenish the converted activated carbon from the previous round, ensuring a consistent initial carbon amount throughout each round. Source data are provided as a Source Data file.
