GC-MS and FI-IR analysis of the bio-oil with addition of ethyl acetate during storage

• Main Authors: Le eZhang, Chenjie eShen, Ronghou eLiu
• Format: Article
• Language: English
• Published: Frontiers Media S.A. 2014-01-01
• Series: Frontiers in Energy Research
• Subjects: GC-MS; bio-oil; Physical properties; ethyl acetate; infrared spectrum
• Online Access: http://journal.frontiersin.org/Journal/10.3389/fenrg.2014.00003/full
• ISSN: 2296-598X

Different mass fractions (0%, 3%, 6%, 9%, 12%, and 15%) of ethyl acetate were added to bio-oil for improving its storage stability during storage at 40℃ for 35d. For different bio-oils during storage, physical properties were characterized and chemical components were determined by GC-MS and FT-IR. The results of properties characterization showed that, addition of ethyl acetate could instantly lower bio-oil viscosity, water content, and dramatically decrease the rate of aging. pH value of bio-oil can be instantly improved by adding ethyl acetate. GC-MS results revealed that addition of various content of ethyl acetate into bio-oil and its storage at 40℃ for 35d could both lead to disappearance of previous compounds and generation of new compounds. FT-IR results showed that addition of various content of ethyl acetate into bio-oils and its storage at 40℃ for 35d could slightly change the wavenumbers of substantial functional groups in bio-oils.