Figure 8. Molar flow rates of CH3OH,
H2O, and C2H4O at the
reactor outlet as a function of time when either (a) 0.12 kPa
H2O or (b) 0.12 kPa H2O and 0.12 kPa
CH3OH are fed over MIL-100(Cr) at 373 K following the
oxidation of CH4 (reaction conditions: 473 K, 2.9 kPa
N2O, 1.5 kPa CH4, 2 h, activated at 523
K in He for 12 h).
Table 1. Comparison of the cumulative moles of
CH4 reacted and C2H4O
formed over MIL-100(Cr) when the product extraction step is conducted
under different pressures of H2O and
CH3OH at 373 K. C2H4O to
methoxy ratios are determined assuming 1 mol CH3O formed
per mol CH4 reacted (Reaction conditions: 473 K, 2.9 kPa
N2O, 1.5 kPa CH4, 2 h, activated at 523
K in He for 12 h). No product formation detected in the presence of only
0.12 kPa H2O.