A Study on the Distribution of Nitrogen-containing Compounds From Liaohe Atmospheric Residue

Abstract

The distribution of nitrogen (N)-containing compounds of Liaohe Atmospheric Residue (LHAR) was investigated. The compounds were analyzed by GC-MS and ESI FT-ICR MS. It is demonstrated that the basic nitrogen compounds in LHAR consist mainly of quinoline compounds and a part of pyridine and acridine compounds, while the main nonbasic nitrogen compounds are carbazole and indole compounds. And the major N-compounds are N₁ compounds with unsaturation between 7 and 15 and carbon numbers between 25 and 35. With the rising of boiling point, the carbon numbers and unsaturation increase, meanwhile, N₁O₂ and N₁O₁ heteroatomic compounds gradually appear. For the vacuum fractions of LHAR, as the boiling point rises, the content of basic nitrogen compounds reduces and none-basic nitrogen compounds increases gradually.

Keywords:

• atmospheric residue
• distribution
• ESI FT-ICR MS
• GC-MS
• nitrogen compounds