Pah growth and soot formation in the pyrolysis of acetylene and benzene at high temepratures and pressrues: modeling and exepriemtn

摘要

The growth of high modlectular polycycylkic aromatic yhydrocarbons (PAHs) before soot inception is modeled during C_2H_2 and C_6H_6 pyrolyysis at temerpatures betwwen 1600 and 2400 K,p=60 bar,and C-atom concentrations of (3.8-4.0)x10~-6 mol/cm~3.The formaiton of hihg molecular PAH is mainly computed by two different reaction pathways: (1) successive H-abstraction C_2H_2 additions and (2) a combinative ring-ring ocndensation fo aromatics.The calcualtions are ocmpared iwth measruements obtained from C_2H_2 and C_6H_6 pyrolysis by the shock wave method.