Electron Impact Ionization and Fragmentation of Biofuels

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Lopes, Cristina
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We present in this article, a review of our recent experimental and theoretical studies published in the literature on electron impact ionization and fragmentation of the primary alcohols methanol, ethanol, 1-propanol and 1-butanol (C-1-C-4). We discuss the mass spectra (MS) of these alcohols, measured for the electron impact energy of 70 eV and also, total (TICS) and partial (PICS) ionization cross sections in the energy range from 10 to 100 eV, which revealed the probability of forming different cations, by either direct or dissociative ionization. These experimental TICS are summarized together with theoretical values, calculated using the Binary-encounter Bethe (BEB) and the independent atom model with the screening corrected additivity rule (IAM-SCAR) methods. Additionally, we compared data of appearance energies - AE and discussed the application of the extended Wannier theory to PICS in order to produce the ionization and ionic fragmentation thresholds for the electron impact of these alcohols.
© 2020 Springer Nature Switzerland AG. Part of Springer Nature. Artículo firmado por 14 autores. This work was supported by the Brazilian Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Fundacao de Amparo a Pesquisa do Estado de Minas Gerais (FAPEMIG) and FINEP. M.C.A.L. acknowledges financial support from CNPq, while W.A.D.P., S. G., A.C.P.F. and R.A.A.A. acknowledge their fellowships from CAPES. Some financial assistance from the Australian Research Council through grant #DP180101655 is also noted. Finally, G. García thanks the Spanish Ministerio de Economía, Industria y Competitividad for his project grant FIS 2016-80440 and the EU project FP7 - ITN - ARGENT - 608163.
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