使用离子液体使得合成过程变得更加绿色和简单，因为产品易分离，催化剂可以循环利用，而且不必使用挥发性有害的有机溶剂。
Using the ionic liquids, the synthesis process became greener and simpler because of easy product separation and catalyst recycling and unnecessary use of volatile and harmful organic solvents.
挥发性有机化合物(VOC)以气体形式从某些固体或液体中发挥出来。
Volatile organic compounds (VOCs) are emitted as gases from certain solids or liquids.
不含VOC——VOCs，或者挥发性有机化合物，是从固体或者液体中散发出来的化学气体。
VOC free - VOCs, or volatile organic compounds, are chemicals that can be emitted as gas from either a solid or a liquid.
由于离子液体的蒸汽压极低，相对于其它有机溶剂来说，其无毒、不挥发性相对环境友好。
Because of their extremely low volatility, ILs are expected to have minimal environmental impact on air quality compared to most other volatile solvent systems.
由于离子液体的蒸汽压极低，相对于其它有机溶剂来说，其无毒、不挥发性相对环境友好。
Because of their extremely low volatility, ILs are expected to have minimal environmental impact on air quality compared to most other volatile solvent systems.
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