First, I go along the basic experiment of the preparation of nitrobenzene,the experimental data shows that the degree of nitration and the translation rate get bigger as the increase of temperature. The limit temperature mast be lower than 75 Celsius degree because the reaction can not continue when the temperature exceed the boiling point of benzene.
首先进行了硝基苯合成的基础实验,实验数据表明苯的硝化程度和转化率都随温度的升高而增加,同时基础的混酸硝化工艺在70摄氏度达到最大温度,否则超过苯的沸点将使反应无法继续下去,而绝热硝化法由于增加了压强,使得反应温度可以超过苯的沸点,因此提高了收率,并且提高了废酸利用率并降低了环境污染。
参考来源 - 硝基苯合成及动力学研究·2,447,543篇论文数据,部分数据来源于NoteExpress
Water freezes at 0 Celsius degree.
水在摄氏零度结冰。
The mercury hovered around 35 Celsius degree.
水银温度计停留在摄氏35度左右。
The maximum temperature in July may be 36 Celsius degree.
七月份最高温度可能达到36摄氏度。
And so redefining then the temperature scale to the Kelvin scale, where t in degrees Kelvin is equal to t in degree Celsius, plus 273.15.
以K为单位的温度,是以℃为单位的温度,加上273。15度。
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