求問關於一個甘油結晶化的故事的真假···?

「瓦特遜也提到,一個關於甘油結晶化的有名故事。甘油這種物質,在20世紀之前,大家都認為不可能以固體形態存在,沒有一個化學家可以做到結晶化。結果,有一次意外發現在各種條件重疊下自然結晶的甘油,許多化學家就以此為樣本,做到了甘油結晶。就在這期間,發生了異常變化。當某個實驗室的化學家成功將甘油結晶化後,同一個屋子裡的所有甘油就突然都自然結晶了。而且這個現象還在不知不覺中,擴展到世界各地。」——出自綾辻行人的《霧越邸殺人事件》
另外,在遊戲《9人9門9小時》里也由茜之口提到過這個故事。
求問這個故事是真是假?如果是假的,故事的源頭是什麼?


Crystals – A Pain in The Neck

Professor Makoto Kikuchi of Osaka University in Japan has done an investigation on this case, and he arrived at an article published on the Journal of American Chemical Society in 1923. The article said:

「After the seed crystals had arrived it was found that crystallization practically always occurred when amounts of 100 g. of any laboratory sample were slowly warmed over a period of a day, after cooling to liquid-air temperatures. This occurred even when great precautions were taken to exclude the presence of seeds. However, it was found readily possible, by temperature manipulation alone, to produce crystalline or supercooled glycerol at will.」 J. Am. Chem. Soc. 1923, 45, 93.

So, the legend is probably based on this article, but with some extra exaggerations attached. It is quite possible that the original report became more and more farfetched as it was told among the researchers who had experienced unpredictable things while having hard times crystallizing compounds.

By the way, even today glycerin can be crystallized only by adding a seed crystal at zero degree Celsius or warming it slowly from very low temperature. Unlike what many books say, crystallizing glycerin is still not an easy thing to do. Let』s just remember to be careful about believing these kinds of story.

大概是說1923年有個日本教授發了篇JACS(原文:THE THIRD LAW OF THERMODYNAMICS. EVIDENCE FROM THE SPECIFIC HEATS OF GLYCEROL THAT THE ENTROPY OF A GLASS EXCEEDS THAT OF A CRYSTAL AT THE ABSOLUTE ZERO),發現即使在沒有晶種的情況下,通過小心的控制溫度,緩慢加熱過冷液體也是可以得到甘油晶體的。
全世界甘油同時自髮結晶的傳聞可能是基於這篇文章的結論進行誇大,以達到小說引人入勝的目的。


結晶是真的,加入微量的物質可以改變結晶狀態,謀些物質可以做晶種


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