Reactions of Atomic Hydrogen with Ketene and Acetaldehyde

The reaction of hydrogen atoms with ketene yields predominantly CH3 radicals and CO. The associated rate coefficient can be expressed by k3 = (6.0 ± 2.2) · 10−12 exp [‐(2340 ± 200) cal/mol · RT] cm3/molecule · sec. Acetyl radicals resulting from the reaction of hydrogen atoms with acetaldehyde react with H atoms to produce ketene and molecular hydrogen with 63 percent yield: a second reaction channel produces CH3 and HCO radicals with 37 percent yield.