Experimental and Kinetic Modeling Studies of 3‑Methylfuran Pyrolysis at Low and Atmospheric Pressures

Studies of 3-methylfuran (MF3) pyrolysis were carried
out from
848 to 1373 K in a pyrolysis tube at 30 and 760 Torr using synchrotron
vacuum ultraviolet photoionization mass spectrometry. Key products
and intermediates were detected and measured, including methyl, propargyl,
acetylene, ethylene, propyne/allene, vinylacetylene, propene, 1,3-butadiene,
2-butyne, ketene, etc. A pyrolysis model of MF3 was constructed and
validated against the experimental data. The reaction pathways of
MF3 decomposition, aromatics formation, and comparison between MF3
and 2-methylfuran pyrolysis were analyzed. The pyrolysis of MF3 was
mainly controlled by the H-transfer reaction at 30 Torr. The H-transfer
reaction and H-abstraction reaction dominated the consumption of MF3
at 760 Torr. MF3 had similar consumption pathways and slightly lower
aromatics formation tendency than those of 2-methylfuran.