High Pressure Ion-Molecule Reactions in Carbon Monoxide and Carbon Monoxide-Methane Mixtures

摘要

In carbon monoxide at pressures above 0.2 torr, the principal produce ion is C2O2(+) formed by a three-body process. Above about 0.8 torr, the reaction appears to approach equilibrium with an equilibrium constant of 1.95/torr. At pressures of methane above 0.2 torr and small additions of CO, the only reaction observed is the protonation of CO by CH5(+) with a rate constant and are not observed. At pressures of carbon monoxide above 0.2 torr, the addition of small amounts of methane results in an H atom transfer reaction to CO(+). In addition, C2O2(+) reacts to form HCO(+), C2H3O(+), and C3H3O(+). (Author)