Closed-system pyrolysis of butyl ethyl ether and sec-butyl ethyl ether at 20 MPa—Mechanistic insights

摘要: Abstract Natural macromolecular organic matter (kerogen) possesses a complex structure with variety of subunits multitude functional groups (e.g. numerous ether bonds). During thermal maturation, preferential cleavage labile bonds leads to fragmentation and the gradual liberation CO 2 , H O compounds (e.g., hydrocarbons). Though, detailed understanding kinetics mechanisms individual thermochemical reactions during maturation is difficult due structure, but would enable an improved prediction composition released products or gas pressures. Pyrolysis studies model are one approach for better bond pathways in kerogen derivation kinetic parameter. Here we present results closed-system pyrolysis experiments butyl ethyl (BEE) sec-butyl (SBEE) at elevated pressure (20 MPa) temperatures (150–345 °C). C 1 –C 4 alkanes carbonyl (CO butanone) account pyrolysis’ main together alkenes as byproducts. A radical chain reaction mechanism proposed explain formation products. The activation energy abstraction from C controls favored radicals whose decomposition gives rise several esters byproducts can be attributed alkoxy aldehydes – some extent processes induced by oxygen impurities.