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首页> 外文会议>International solvent extraction conference >PHOTODEGRADATION OF OXIMES OF 2-HYDROXY-5-t-OCTYLBENZOPHENONE, 2-HYDROXY-5-t-OCTYLBENZALDEHYDE AS MODELS OF HYDROXYOXIME EXTRACTANTS OF METALS
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PHOTODEGRADATION OF OXIMES OF 2-HYDROXY-5-t-OCTYLBENZOPHENONE, 2-HYDROXY-5-t-OCTYLBENZALDEHYDE AS MODELS OF HYDROXYOXIME EXTRACTANTS OF METALS

机译：2-羟基-5-T-辛基二苯甲酮，2-羟基-5-T-辛基苯并吲哚作为金属羟肟萃取剂模型的光降解

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2-Hydroxy-5-t-octylbenzophenone oxime (Ⅰ), 2-hydroxy-5-t-octylacetophenone oxime (Ⅱ) and 2-hydroxy-5-t-octyl-benzaldehyde oxime (Ⅲ) and their copper complexes are used to study their photo-stability under UV light in a mixture of octane:toluene (4:1 v/v). The influence of water as well as sulphuric acid on the photo-degradation of oximes is also studied. Degradation products are identified. Photo-degradation of Ⅰ yields different products compared with Ⅱ and Ⅲ. 2-Hydroxy-5-t-octylbenzophenone or 2-phenyl-5-t-octylbenzoxazole is the main degradation product of I depending on reaction conditions (diluent, water or sulphuric acid content). The former can be oximated to the oxime and recycled. The latter becomes a ballast substance. A photo-isomerization of (E)-isomer into non-active (Z)-isomer is also observed, Ⅱ and Ⅲ yields mainly 2-hydroxy-5-t-octylacetophenone and 2-hydroxy-5-t-octylbenzaldehyde, respectively, which may be oximated and the reagent recycled. Copper complexes increase the stability of hydroxyoximes and may be considered as natural stabilizers.
机译：2-羟基-5-T-辛基苯酮肟（Ⅰ），2-羟基-5-T-辛基乙酮肟（Ⅱ）和2-羟基-5-T-辛基 - 苯甲醛（Ⅲ）及其铜配合物用于氧化肟（Ⅲ）及其铜络合物在辛烷：甲苯的混合物中研究紫外光下的光稳定性（4：1 v / v）。还研究了水以及硫酸对肟的光降解的影响。确定了降解产物。 Ⅰ的光降解产生不同的产品与Ⅱ和Ⅲ相比。 2-羟基-5-T-辛基二苯甲酮或2-苯基-5-T-辛基苯并恶唑是I的主要降解产物，取决于反应条件（稀释剂，水或硫酸含量）。前者可以血氧化到肟并再循环。后者成为镇流器物质。还观察到（e） - 异构体的光异构化分别为非活性（Z） - 异构体，Ⅱ和Ⅲ主要产生2-羟基-5-叔辛基酮和2-羟基-5-T-辛基苯并苯甲醛，这可能是血氧化的，并且再循环试剂。铜复合物增加了羟基氧基的稳定性，并且可以被认为是天然稳定剂。

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