异丙醇低压热解的实验和动力学模型研究

The pyrolysis of iso-propanol was studied in a flow reactor at 1.3 kPa and 1,000-1,400 K using synchrotron vacuum ultraviolet photoionization mass spectrometry(SVUV-PIMS).Lots of species were detected,including hydrocar-bons,alcohols,aldehydes and ketones which are stable,as well as radicals and enols which are unstable.A detailed kinetic model with 142 species and 1,149 reactions of iso-propanol was developed and validated on the experimental results in present work.Rate of production(ROP)analysis and sensitivity analysis were conducted to shed light on the whole pyrolysis process of iso-propanol.It is indicated that dehydration is the most sensitive to the primary consumption of iso-propanol and controls the production of hydrocarbons,while the α-C-C bond dissociation reaction contributes abundant radicals.Hydrogen abstraction reaction is another pathway to iso-propanol pyrolysis,leading to most oxygen species.