Identification of carbazoles and benzocarbazoles in a coker gas oil and influence of catalytic hydrotreatment on their distribution

✍ Scribed by Michel Dorbon; Ioannis Ignatiadis; Jean-Marie Schmitter; Patrick Arpino; Georges Guiochon; Hervé Toulhoat; Alain Huc

• Publisher: Elsevier Science
• Year: 1984
• Tongue: English
• Weight: 755 KB
• Volume: 63
• Category: Article
• ISSN: 0016-2361
• DOI: 10.1016/0016-2361(84)90298-9

✦ Synopsis

Fractions highly enriched in pyrrole benzologues have been extracted from a coker gas oil before and after hydrotreatment under selected operating conditions. Carbazole, methyl-and dimethylcarbazoles and benzocarbazoles have been identified by means of gc. coelutions with standards. The study of these compounds after catalytic hydrotreatment has shown that benzocarbazoles are more effectively removed than carbazoles in highly hydrogenating conditions (partial pressure of hydrogen, 10 MPa; temperature, 360°C) whereas alkyl carbazoles and more particularly 1 -methyl derivatives are more altered at a high temperature (38o"C, partial pressure of hydrogen, 5 MPa).