Table 3. Selectivity of the Carbon-Based Gas Products, and the Coverage of the Surface Species over the Rh(111) Surface under Various Reaction Conditions^a.

	T = 473.15 K, PH2 = 0.75 bar, PCO2 = 0.25 bar	T = 473.15 K, PH2 = 0.8 bar, PCO2 = 0.2 bar	T = 473.15 K, PH2 = 0.9 bar, PCO2 = 0.1 bar
CH4 selectivity	0.654	0.759	0.882
HCOOH selectivity	0.346	0.241	0.118
θCO	0.410	0.319	0.180
θCO2	0.021	0.009	0.006
θCOOH	0.001	0.007	0.004
θHCOO	0.009	0.005	0.004
θO	0.004	0.004	0.001
θH (hollow)	0.129	0.210	0.348
θOH	0.001	0.002	0.001
θH2O	0.047	0.026	0.014
θH (top)	0.367	0.417	0.440

^aCoverage is defined as earlier mentioned.