关键词: 离子液体, 沥青砂, 降解, 族组成

Abstract: This paper illustrates the reaction pattern of catalytic degradation of macromolecules in asphaltic sands.Such parameters as ionic liquid catalyst system and H⁺ proton donor,that affect the change of the organic phase and the mass of organic matter in residual phase of asphaltic sands,were investigated.It was found that chloroaluminate (Ⅲ) ionic liquid/H₃PO₄ systems as reaction medium was an effective catalyst system for asphaltic sands degradation.The catalytic degradation of asphaltic sands was related to the kinds of chloroaluminate (Ⅲ) ionic liquids and H⁺ proton donor. In ［BMIM］［AlCl₄］/H₃PO₄ reaction catalytic medium, the degradation of asphaltenes in the organic phase reached 16.44%, the degradation of asphaltenes in the residual phase reached 30.74%.TLC-FID analysis of asphaltic sands showed that the main degradation products were saturates and aromatics,and resin fractions as well.At a temperature close to oil-bearing formation and with absense of oxygen,the yield of H₂S reached 74%, which indicated that catalytic degradation of sulphur-containing compounds was easier.

Key words: 离子液体, 沥青砂, 降解, 族组成