Flash vacuum pyrolysis of lignin model compounds
- Oak Ridge National Lab., TN (United States)
Lignin, the second most abundant, naturally occurring biopolymer has been the subject of widespread interest, as a consequence of its availability and its potential as a feedstock for aromatic chemicals and transportation fuel. However, even with the large quantity of research on the pyrolysis of lignin, there is no consensus on the mechanisms of decomposition at low to moderate temperatures (< 600{degree}C). Moreover, many of the mechanistic studies have not been performed under conditions relevant to current processing technologies, i.e. fast pyrolysis. A more detailed mechanistic understanding of the pyrolysis pathways could provide insight into maximizing product yields and selectivities so that oil composition could be controlled by the primary pyrolysis conditions, feedstock pretreatment, or thermal and/or catalytic upgrading of the vapors. In this investigation, a flash vacuum pyrolysis apparatus will be designed for the study of the pyrolysis of {beta}-alkyl aryl ether model compounds. Initial results at 400-600{degree}C for the simplest lignin model, phenethyl phenyl ether (PhCH{sub 2}CH{sub 2}OPh), will be presented and compared with our previous results on the low temperature (330-425{degree}C) sealed tube pyrolysis of lignin will be discussed.
- OSTI ID:
- 126153
- Report Number(s):
- CONF-950402--
- Country of Publication:
- United States
- Language:
- English
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