Fig. 2.

Catalytic performance of 0.10 wt%Rh/ZSM-5. Yields of acetic acid, formic acid and methanol as well as the selectivity to acetic acid as a function of different pressures of CH₄ (10 or 50 bars) and different reaction times (2 h or 12 h). 28 mg  of 0.10 wt%Rh/ZSM-5 was used for each catalysis test. Each catalysis test used 10 bar CO and 8 bar O₂ and certain pressure of CH₄ as noted on x-axis (10 or 50 bars). The catalysis temperatures of all studies here were 150 °C