在高溫高壓的水合熱裂條件下甲菲異構物已被證實可裂解生成菲，而部分異構物間也可以相互轉換，其中2-甲菲和9-甲菲間有相當高的互換比例。比較2-甲菲和9-甲菲在輕水及重水中的水合熱裂反應，發現2-甲菲及9-甲菲在280℃、3 天利用重水進行的水合熱裂條件中有顯著相互轉換的跡象，且至少有二個2-甲菲或9-甲菲分子內的氫被氘置換。而在較高溫度的條件下無論是在輕水或重水中，2-甲菲和9-甲菲互換比例明顯降低，反而菲及其他化合物如茀酮等有增加的趨勢，在350oC 時則無法偵測2-甲菲和9-甲菲互換的結果。2-甲菲與9-甲菲水合熱裂過程中可能的反應機制也在本文中一併被討論。

　Hydrous pyrolysis of methylphenanthrenes under high temperature and high pressure condition has been proof to generate phenanthrene and 9-fluorenone. In additon, an abnormal high isomerization interchange ratio was found in the cases of 2-methylphenanthrene and 9-methylphenanthrene.Thus Intensively studies of hydrous pyrolysis 2-methylphenanthrene and 9-methylphenanthrene were carried in
either light or heavy water. The results indicated that hydrous pyrolysis in heavy water at 280oC, for 3 days has the highest transformation ratio between 2 methylphenanthrene and 9-methylphenanthrene which in corporation with that two hydrogen atoms has been exchanged with deuterium atoms.
The isomerization ratio of methylphenanthrenes was decreased in higher pyrolysis temperature in contrast of that the yields of both phenanthrene and 9-fluorenone were increased. The mechanism of isomerization between 2-methylphenanthrene and
9-methylphenanthrene was also proposed.

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盧廣郎, 石油季刊, 民國70年, 第17 卷, 第2 期, 第49-67 頁
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