单线态氧与环境友好的纸浆漂白

Singlet Oxygen and Environmentally Friendly Pulp Bleaching

简要介绍了单线态氧的性质、制备方法和应用领域,着重介绍了近期单线态氧用于纸浆漂白方面的有关研究和探索。相关研究表明,单线态氧对木素具有较强的降解能力,在漂白过程中具有较好的选择性,尤其是采用光催化法制备单线态氧用于纸浆的漂白,化学药品消耗少,对环境友好,进一步深入研究将具有广阔的应用前景。

In contrast with ground state oxygen,singlet oxygen has a higher chemical reactivity due to its unpaired electrons.In this paper, the properties,generation and application of singlet oxygen were introduced briefly,especially,some study and attempt utilized singlet oxy- gen for pulp bleaching in recent years were Introduced in detail.Those studies indicated that singlet oxygen has stronger degradability of lignin than ground state oxygen,and singlet oxygen has a good bleaching selectivity.In particularly,bleaching with singlet oxygen prepared by photo catalyzing consumes little chemicals and it is environmentally friendly.So,it is necessary to study this subject deeply and it will have promising practical application future.