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- W2387923002 abstract "The trimethylsilyl(TMS) derivatives of phenolic compounds,concentrated from the oil through high efficiency caustic extraction method,were prepared by reacting quantitatively with derivative reagent.The TMS derivatives are suitable for qualitation and quantitation because of their elevated volatility and improved separation degree between one another.the GC/MS result shows that the phenolic compounds are mainly composed of four types of ring structures: phenols,indanols,naphthols and biphenols,and most of them are alkyl substituted.We have identified 36 phenols,which contain 1~3 rings,using retention time assignation and mass spectrometry matching.Furthermore with the external standard method,the contents of 23 phenols in the oil have been accurately quantitated including the phenol of 6.24% and all three isomers(o-/m-/p-) of the cresol of more than 7.5%.The quantitative results also indicate that the alkylphenol is the richest,is 57.82%,followed by the naphthanol of 3.29% and indanol of 2.89%." @default.
- W2387923002 created "2016-06-24" @default.
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- W2387923002 date "2009-01-01" @default.
- W2387923002 modified "2023-09-28" @default.
- W2387923002 title "GC/MS study of phenolic compounds separated from direct coal liquefaction oil" @default.
- W2387923002 hasPublicationYear "2009" @default.
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