Abstract: In this paper, FCC diesel was directly used as raw material to synthesize condensed polycyclic polynuclear aromatic hydrocarbon (COPNA) resin. Under the optimal cross-linking conditions of a FCC diesel:catalyst:crosslinker mass ratio of 1: 0.1: 0.35,a reaction temperature of 140 ℃,a reaction time of 14 h, and a curing temperature of 350 ℃, a curing time of 150 min, the yields of moderate condensation polycyclic aromatic hydrocarbon (B-COPNA) resin and thermosetting condensation polycyclic aromatic hydrocarbon (C-COPNA) resin were 73.22% and 56.14%, respectively. The results of gas chromatography-mass spectrometry (GC-MS) and Fourier infrared spectroscopy (FT-IR) showed that FCC diesel was rich in polycyclic aromatic hydrocarbons without long alkyl side chains and had small steric hindrance, which was suitable as a raw material for COPNA resin. The thermal behavior of the resin was studied by thermogravimetric analyzer, and it was found that the carbon residue rates of the synthesized B-COPNA resin and C-COPNA resin were 44.26% and 45.17%, respectively. After the reaction, the yield of diesel was 41.38%, the content of saturated hydrocarbon increased from 34.15% to 83.11%, and the cetane number of diesel increased from 33.13 to 42.39.

Key words: FCC diesel, polycyclic aromatic hydrocarbons, COPNA resin, synthesis