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Effect of initiating additives on phenol oxidation in water–oxygen fluid
Thermophysics and Aeromechanics ( IF 0.5 ) Pub Date : 2023-10-23 , DOI: 10.1134/s0869864323030125
A. V. Shishkin , S. A. Alekhin , M. Ya. Sokol

Phenol oxidation in a water-oxygen fluid in a tubular batch reactor with its uniform heating (1 °C/min) to 600 °C was studied. An increase in the amount of O2 above the stoichiometric ratio by 25 % leads to an increase in the degree of carbon burnout by the factor of 1.09. Replacing 10 % of the stoichiometric amount of oxygen with nitrous oxide leads to the same increase in the degree of carbon burnout, primarily due to its afterburning at a temperature of ≥ 400 °C. Replacement of some part of phenol with isopropanol leads to an increase in the degree of carbon burnout by the factor of 1.02. It was established for the first time that the heterogeneous mechanism of phenol oxidation in a water-oxygen fluid is the main one. However, the overstoichiometric amount of O2, as well as the addition of N2O and isopropanol intensifies gas-phase combustion of carbon. A catalytic effect of a Pt-Rh/Pt-thermocouple on the degree of phenol conversion in the presence of O2 at temperatures above 135 °C was found.



中文翻译:

引发剂对水氧流体中苯酚氧化的影响

研究了管式间歇反应器中水-氧流体中苯酚的氧化,并均匀加热(1°C/分钟)至 600°C。O 2量增加至化学计量比之上25%导致碳燃尽程度增加1.09倍。用一氧化二氮代替 10% 化学计量的氧气会导致碳燃尽程度同样增加,这主要是由于其在 ≥ 400 °C 的温度下进行后燃烧。用异丙醇代替部分苯酚导致碳燃尽程度增加1.02倍。首次确立了水氧流体中苯酚氧化的非均相机理是主要机理。然而,过量的O 2以及N 2 O和异丙醇的添加加剧了碳的气相燃烧。发现在 O 2存在且温度高于 135 °C 的情况下,Pt-Rh/Pt-热电偶对苯酚转化程度具有催化作用。

更新日期:2023-10-23
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