Theoretical study on the reactions of n-CnH2n+1OH (n = 1–4) with C2H5 radicals: Predicted rate constants and branching ratios

•The n-CnH2n+1OH (n = 2-4) + C2H5 reactions take place via H-abstraction channels. The α-H abstraction channel has the lowest barrier energy.•All products from hydrogen abstractions may co-exist at high-temperature conditions.•The optimized geometries of the related species and predicted heats of reaction agree well with available data.