Two-dimensional HPLC and GC-MS of oils from catalytic coal liquefaction
- Penn State Univ., University Park, PA (United States)
We have employed normal-phase HPLC with photo diode array detector and GC-MS techniques to characterize the oils (hexane soluble fraction) from the catalytic and non-catalytic liquefaction of Wyodak subbituminous coal at 400{degrees}C under 6.9 MPa H{sub 2} pressure. The use of a dispersed Mo catalyst afforded much higher oil yield than the non-catalytic run. HPLC reveals that the oils from the catalytic runs contain more phenolic compounds and more of heavier components as compared to the oils from non-catalytic run. On the other hand, GC-MS shows that there is a significant amount of long-chain alkanes in the oils, ranging from C{sub 11} to C{sub 35}. The analytical results from the two techniques appear to be complementary to each other. The oils contain some heavier components which are detectable by HPLC but undetectable by GC-MS. GC-MS of HPLC fractions of the oils from the catalytic run confirmed the presence of significant amount of phenols and indanols.
- OSTI ID:
- 254793
- Report Number(s):
- CONF-940813--
- Country of Publication:
- United States
- Language:
- English
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