Major

Chemistry

Research Abstract

The purpose of this research is to study the oxidation of alpha-angelica lactone (AAL) initiated by O(3P) using the synchrotron radiation from the Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory. The reaction species are investigated by multiplexed photoionization mass spectrometry. Mass-to-charge ratios, time traces, and photoionization spectra are collected for each primary product to help in their identification. Their adiabatic ionization energies are also obtained. The observed primary products at 298 and 550 K are ketene (m/z 42), acetaldehyde (m/z 44), methyl vinyl ketone (m/z 70), methylglyoxal (m/z 72), 5-methyl-2,4 furandione (m/z 114). The same products with the exception of 5-methyl-2,4 furandione (m/z 114) are observed at 700 K.

Faculty Mentor/Advisor

Giovanni Meloni

Available for download on Sunday, January 01, 2040

Included in

Chemistry Commons

Share

COinS
 
May 7th, 12:00 AM May 10th, 12:00 AM

Synchrotron Photoionization Study of the O(3P) + Alpha-Angelica Lactone (AAL) at 298, 550, and 700K

The purpose of this research is to study the oxidation of alpha-angelica lactone (AAL) initiated by O(3P) using the synchrotron radiation from the Advanced Light Source (ALS) at the Lawrence Berkeley National Laboratory. The reaction species are investigated by multiplexed photoionization mass spectrometry. Mass-to-charge ratios, time traces, and photoionization spectra are collected for each primary product to help in their identification. Their adiabatic ionization energies are also obtained. The observed primary products at 298 and 550 K are ketene (m/z 42), acetaldehyde (m/z 44), methyl vinyl ketone (m/z 70), methylglyoxal (m/z 72), 5-methyl-2,4 furandione (m/z 114). The same products with the exception of 5-methyl-2,4 furandione (m/z 114) are observed at 700 K.