Petroleomic Analysis of Bio-oils from the Fast Pyrolysis of Biomass: Laser Desorption Ionization-Linear Ion Trap-Orbitrap Mass Spectrometry Approach

TitlePetroleomic Analysis of Bio-oils from the Fast Pyrolysis of Biomass: Laser Desorption Ionization-Linear Ion Trap-Orbitrap Mass Spectrometry Approach
Publication TypeJournal Article
Year of Publication2010
AuthorsSmith EA, Lee YJ
Journal TitleEnergy & Fuels
Volume24
Pages5190-5198
Date Published09
ISBN Number0887-0624
Accession NumberISI:000283111000069
Keywordsbiofuel, lignin, MS, RESONANCE, water-insoluble fraction
Abstract

Fast pyrolysis of biomass produces bio-oils that can be upgraded into biofuels. Despite similar physical properties to petroleum, the chemical properties of bio-oils are quite different and their chemical compositions, particularly those of non-volatile compounds, are not well-known. Here, we report the first time attempt at analyzing bio-oils using high-resolution mass spectrometry (MS), which employed laser desorption ionization-linear ion trap-Orbitrap MS. Besides a few limitations, we could determine chemical compositions for over 100 molecular compounds in a bio-oil sample produced from the pyrolysis of a loblolly pine tree. These compounds consist of 3-6 oxygens and 9-17 double-bond equivalents (DBEs). Among those, O-4 compounds with a DBE of 9-13 were most abundant. Unlike petroleum oils, the lack of nearby molecules within a +/- 2 Da mass window for major components enabled clear isolation of precursor ions for subsequent MS/MS structural investigations. Petroleomic analysis and a comparison to low-mass components in hydrolytic lignin suggest that they are dimers and trimers of depolymerized lignin.

URL<Go to ISI>://000283111000069http://pubs.acs.org/doi/pdfplus/10.1021/ef100629a
DOI10.1021/Ef100629a
Alternate JournalEnerg Fuel