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首页> 外文期刊>Applied Catalysis, B. Environmental: An International Journal Devoted to Catalytic Science and Its Applications >Pyrylium salt-photosensitized degradation of phenolic contaminants present in olive oil wastewater with solar light Part III.Tyrosol and p-hydroxyphenylacetic acid
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Pyrylium salt-photosensitized degradation of phenolic contaminants present in olive oil wastewater with solar light Part III.Tyrosol and p-hydroxyphenylacetic acid

机译：solar盐对光催化降解橄榄油废水中存在的酚类污染物的影响（三）邻苯二酚和对羟基苯乙酸

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摘要

Photodegradation of hyrosol and p-hydroxyphenylacetic acid,present in olive oil wastewater,can be achieved using 2,4,6-triphenylpyrylium salt as solar photocatalyst.Fluorescence quenching measurements support the involvement of electron transfer as the key step in this process,with formation of substrate-derived radical cations.Important degradation yields an achieved.Other advanced oxidation methods(oxone and/or UV-radiation)have been tested as well;as expected,tyrosol and p-hydroxyphenylacetic acid abatement is faster,but oxone and UV are dangerous and expensive for industrial uses.However,ozone and UV do not show an important synergistic effect in tyrosol and p-hydroxyphenylacetic acid oxidation.p-Hydroxymandelic acid and p-hydroxybenzaldehyde have been detected and identified by HPLC as intermediates;one the basis of these data,a reaction mechanism involving oxidation at the benzylic position is proposed.
机译：2,4,6-三苯基吡啶鎓盐作为太阳光催化剂可实现橄榄油废水中存在的对羟基苯甲酸和对羟基苯乙酸的光降解。荧光猝灭测量支持电子转移是该过程的关键步骤，形成了可以实现重要的降解，还可以测试其他先进的氧化方法（内酯和/或紫外线辐射）;正如所预期的，酪醇和对羟基苯基乙酸的消除速度更快，但内酯和紫外线的去除速度更快。臭氧和紫外线在酪醇和对羟基苯乙酸的氧化中没有显示出重要的协同作用。对羟基苯甲酸和对羟基苯甲醛已通过高效液相色谱法进行了检测和鉴定，是中间体。根据这些数据，提出了涉及苄基位置氧化的反应机理。

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