Thermal Decomposition of Methyl Acetate (CH_3COOCH_3) in a Flash-Pyrolysis Micro-Reactor Conference Paper uri icon

abstract

  • Abstract The thermal decomposition of methyl acetate (CH_3COOCH_3) has been studied in a set of flash pyrolysis micro-reactors. Samples were diluted to (0.06-0.13%) in carrier gases (He, Ar) and subjected to temperatures of 300-1600 K at roughly 20 Torr. After residence times of approximately 25-150 museconds, the unimolecular pyrolysis products were detected by vacuum ultraviolet photoionization mass spectrometry at 10.487 eV (118.2 nm). Complementary product identification was provided by matrix isolation infrared spectroscopy. Decomposition began at 1000 K with the observation of (CH_2= C= O, CH_3OH), products of a four centered rearrangement with a Delta_ {rxn} H_ {298}= 39.1±0.2 kcal mol^{-1}. As the micro-reactor was heated to 1300 K, a mixture of (CH_2= C= O, CH_3OH, CH_3, CH_2= O, H, CO, CO_2) appeared. A new novel pathway is calculated …

publication date

  • June 1, 2017