After reaction with ionic liquids, the amount of saturates, aromatics and resins increase, while asphaltene decreased.This leads to average molecular weight and viscosity of heavy oil decreased.

• 稠油经离子液体处理后，其饱和烃、芳香烃、胶质质量分数增加，沥青质质量分数明显下降，从而导致稠油的黏度降低，平均分子量减小。