Radiolysis of transformer oil in presence of trichlorbenzen and nano-γ-Al2O3

Z. I. Iskenderova
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Abstract

In this work, a comparative study of the kinetics of changes in the pH indicator, the formation of H2O2 and CO2 depending on the absorbed dose at the radiolysis of TCB containing transformer oil in the presence and without nano-γ-Al2O3 under the action of γ radiation was carried out. During radiolysis of both systems (TСB + transformer oil and TСB + transformer oil + 0.1 g of nano-γ-Al2O3), the radiation-chemical yield of CO2 decreases with an increase in the initial concentration of TCB, although at the presence of nano-particles, the values of the radiation-chemical riels of CO2 become less. Unlike CO2, the radiation-chemical yields of H2O2 increase with an increase in the initial concentration of TCB, but their values are less in the presence of nano-γ-Al2O3. The results obtained are explained by the reactions of active particles, radiolysis of the main components of transformer oil, such as hydrogen atoms and hydrocarbon radicals with TCB and dissolved oxygen molecules. In addition, there is a transfer of electronic excitation energy from alkane and cycloalkane molecules to aromatic hydrocarbon molecules. The effect of nano-γ-Al2O3 on the radiolysis of the mixture is discussed on the basis of the reaction of electron and hole centers with the molecules of the components of the irradiated mixture.
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三氯苯和纳米-γ-Al2O3存在下变压器油的辐射分解
本文研究了在γ辐射作用下,纳米γ- al2o3存在和不存在时,含变压器油的TCB在辐射分解过程中pH指标、H2O2和CO2生成随吸收剂量的变化动力学。在两种体系(TСB +变压器油和TСB +变压器油+ 0.1 g纳米-γ-Al2O3)的辐射分解过程中,CO2的辐射化学产率随TCB初始浓度的增加而降低,但在纳米颗粒的存在下,CO2的辐射化学产率减小。与CO2不同的是,H2O2的辐射化学产率随着TCB初始浓度的增加而增加,但在纳米-γ-Al2O3存在时,其值较小。变压器油中主要成分氢原子、烃自由基等与TCB和溶解氧分子的放射性分解反应解释了上述结果。此外,电子激发能从烷烃和环烷烃分子向芳烃分子转移。通过电子和空穴中心与辐照混合物组分分子的反应,讨论了纳米γ- al2o3对混合物辐射分解的影响。
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