Reactivity of naphthalene in pyrolysis of coal tar using the ~14C tracer method

摘要

To trace the behavior of naphthalene in the pyrolysis of coal tar, the pyrolysis of coal tar containing ~14C-labeled naphthalene was carried out at 800-950 deg.C for 40-50 s. It was found that naphthalene has significant pyrolysis reactivity. The distributions of the radioactivities in compounds with 3-5 rings were 21.6, 30.3, and 18.6/100 at 800, 900, and 950 deg.C for 50 s, respectively. Furthermore, the distributions of the recovered redioactivity in THFI at 800, 900, and 950 deg.c For 50 s were 1.6, 5.3, and 47/100, respectively indicating that about half of the ~4C -naphthalene Can be converted into tetrahydrofuran insoluble (THFI) in 50 s at 950 deg.C.