Fig. 3: Isotopic assessment of O2 activation on supported B2O3 catalysts.
From: Direct conversion of methane to formaldehyde and CO on B2O3 catalysts
Mass spectra of 16O18O (m/z = 34) species upon pulsing 18O2 (m/z = 36) into 16O2 flows on 20 wt% B2O3/Al2O3 were collected in the a absence and b presence of CH4 (CH4 1 mL/min, O2 5 mL/min, N2 4 mL/min, temperature: 550 °C, catalyst loading: 0.2 g). In both a and b, the red and blue curves denote the signals for the m/z ratios of 34 and 36, respectively.
