The luminous reduction of selenium dioxide
The luminous reduction of selenium dioxide
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二氧化硒的发光还原
DOI：
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发表时间：
1933
期刊：
影响因子：
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通讯作者：
H. L. Riley
中科院分区：
文献类型：
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作者：
H. Emeléus;H. L. Riley
在最近对二氧化硒对有机化合物的氧化作用的一些研究过程中，人们发现，如果温度升高到特定氧化反应所需的温度以上，二氧化物的还原伴随着典型的月光般的火焰。这是在乙烯与二氧化硒在大约400°C的温度下的反应中首次观察到的，但随后发现许多其他物质具有类似的行为，以下物质已被详细研究：乙烯，乙炔，甲醇，乙醇和丙醇，乙醛，丙酮，苯，甲苯，乙醚，二硫化碳和氨。当氧化在较低的温度下进行时，即在对于发光反应来说不够高的温度下进行时，由所有的碳化合物形成中间产物。例如，乙醛被定量地氧化成乙二醛，二氧化物被还原成元素硒，而乙烯也产生乙二醛。进行本研究是希望在较高温度下进行反应时发出的光的性质可能解释在较低温度下氧化的高度选择性。
In the course of some recent investigations on the oxidizing action of selenium dioxide on organic compounds it was found that, if the temperature was raised above the point required for the specific oxidizing reaction, the reduction of the dioxide was accompanied by a characteristic moonlight-like flame. This was first observed in the reaction of ethylene with selenium dioxide at a temperature of circa 400°C, but subsequently a number of other substances were found to behave similarly, the following having been studied in some detail: ethylene, acetylene, methyl-, ethyl-, and propyl-alcohols, acetaldehyde, acetone, benzene, toluene, ether, carbon disulphide, and ammonia. When the oxidation takes place at lower temperatures, i.e. , at temperatures which are not sufficiently high for the luminous reaction, intermediate products are formed from all of the carbon compounds. Acetaldehyde, for example, is oxidized quantitatively to glyoxal, the dioxide being reduced to elementary selenium, whilst ethylene also yields glyoxal. The present investigation was undertaken in the hope that the nature of the light emitted when the reactions are carried out at higher temperatures might possibly explain the highly selective nature of the oxidations at the lower temperatures.