Journal of University of Chinese Academy of Sciences >
Vacuum ultraviolet photoionization mass spectrometric study of methyl acrylate
Received date: 2009-05-06
Revised date: 2009-05-18
Online published: 2009-11-15
Supported by
supported by National Natural Science Foundation of China (10875126, 10675112), and SRF for ROCS, SEM corresponding authors
The vacuum ultraviolet (VUV) photoionization and dissociative photoionization of methyl acrylate have been studied at the photon energy range of 9.0~15.5 eV by using synchrotron radiation and a reflection time-of-flight mass spectrometer (TOF-MS). The photoionization mass spectra and photoionization efficiency (PIE) curves for fragment ions m/e=86(C4H6O+2), 85(C4H5O+2), 59(C2H3O+2), 58(C3H6O+), 55(C3H3O+), 42(C3H+6), 31(CH3O+), 27(C2H+3), and 15(CH+3) from methyl acrylate have been measured. In addition, the energetics of the dissociative photoionization species have been calculated using ab initio Gaussian-3 (G3) programs. The calculated ionization energies (IEs) and appearance energies (AEs) are in good agreement with the experimental data. Moreover, the main dissociative photoionization channels, simple bond cleavage reactions, are proposed.
DU Qi , SHAN Xiao-Bin , LIU Fu-Yi , HAN Ju-Guang , SHENG Liu-Si . Vacuum ultraviolet photoionization mass spectrometric study of methyl acrylate[J]. Journal of University of Chinese Academy of Sciences, 2009 , 26(6) : 749 -758 . DOI: 10.7523/j.issn.2095-6134.2009.6.004
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