fig5
Figure 5. CH4-TPSR-MS results in the absence of gaseous O2 over (A) SrSnO3 and (B) Nd2Sn2O7. Reaction conditions: CH4/He = 4/6, WHSV = 18,000 mL·h-1·g-1. CH4-pulse tests performed over (C) SrSnO3 and (D) Nd2Sn2O7 after the saturation of oxygen adsorption. TPSR: Temperature-programmed surface reaction; MS: mass spectrometry; WHSV: .
