title: Elucidation of the thermal deterioration mechanism of bio-oil pyrolyzed from rice husk using Fourier transform infrared spectroscopy.
abstract: In this study, the rationale for exploring the thermal deterioration mechanism of the bio-oil pyrolyzed from rice husk is established. This is based on identification of the unstable intermediates in the thermal deterioration process. Fourier transform infrared (FTIR) spectroscopy was used to monitor such a thermal deterioration process of bio-oil samples in thermal treatment and/or during long-term storage at ambient temperatures of 20-30 °C. Terminal olefins, as a key intermediate, so-called "signature", were identified qualitatively by using FTIR spectroscopy. A band shift observed at 880 cm(-1), which was assigned to the C-H out-of-plane deformation vibration of terminal olefins, indicates the start-up of the bio-oil thermal deterioration. A two-step pathway was proposed to describe the thermal deterioration process of bio-oil. This study suggests that the status of bio-oil could be rapidly monitored by the FTIR method.
authors.affiliation: Department of Chemistry, University of Science and Technology of China, Hefei, 230026, China.
authors.forename: Fang
authors.initials: F
authors.lastname: Xu
authors.forename: Yu
authors.initials: Y
authors.lastname: Xu
authors.forename: Rui
authors.initials: R
authors.lastname: Lu
authors.forename: Guo-Ping
authors.initials: GP
authors.lastname: Sheng
authors.forename: Han-Qing
authors.initials: HQ
authors.lastname: Yu
mesh_terms: D000475:Alkenes / Q000032:analysis; D055598:Chemical Phenomena; D004355:Drug Stability; D006358:Hot Temperature; D012275:Oryza; D010938:Plant Oils / Q000737:chemistry*; D012639:Seeds / Q000737:chemistry*; D017550:Spectroscopy, Fourier Transform Infrared
chemical_list: D000475:Alkenes; D010938:Plant Oils