Dissociative Ionization and Thermal Decomposition of Cyclopentanone.

ABSTRACT: Despite the growing use of renewable and sustainable biofuels in transportation, their combustion chemistry is poorly understood, limiting our efforts to reduce harmful emissions. Here we report on the (dissociative) ionization and the thermal decomposition mechanism of cyclopentanone, studied using imaging photoelectron photoion coincidence spectroscopy. The fragmentation of the ions is dominated by loss of CO, C₂ H₄ , and C₂ H₅ , leading to daughter ions at m/z 56 and 55. Exploring the C₅ H₈ O^.+ potential energy surface reveals hydrogen tunneling to play an important role in low-energy decarbonylation and probably also in the ethene-loss processes, yielding 1-butene and methylketene cations, respectiv

SUBMITTER: Pastoors JIM 

PROVIDER: S-EPMC5639375 | biostudies-literature | 2017 Sep

REPOSITORIES: biostudies-literature