Characterization of bio-oils from the alkanolyses of sweet sorghum stalk by electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry. (15th November 2015)

• Record Type: Journal Article
• Authors: Yan, Hong-Lei; Zong, Zhi-Min; Li, Zhan-Ku; Wei, Xian-Yong
• Is Part Of: Fuel. Volume 160(2015)
• Page Start: 596
• Page End: 604
• Publication Date: 2015-11-15
• Subjects: Biomass -- Methanolysis -- Ethanolysis -- FT-ICR MS -- Polar compounds; Fuel -- Periodicals; Coal -- Periodicals; Coal; Fuel; Periodicals; 662.6
• DOI: 10.1016/j.fuel.2015.08.021
• Languages: English
• ISSNs: 0016-2361

Abstract

Graphical abstract: Highlights: Numerous acidic and basic species in BOm and BOe from SSS alkanolyses were detected. The most abundant acidic class species in BOm and BOe are O4 and O3, respectively. Lignin-derived compounds are characteristic acidic species in the BOs. The main basic compounds in the BOs are N2 O n ( n = 1–6) class species. Abstract: Bio-oils (BOs) obtained from sweet sorghum stalk (SSS) methanolysis (BOm ) and ethanolysis (BOe ) at 300 °C for 30 min were analyzed with an electrospray ionization Fourier transform ion cyclotron resonance mass spectrometer (ESI FT-ICR MS). In negative-ion mode, the predominant compounds in BOm and BOe are O n ( n = 1–10) class species with double bond equivalent (DBE) values of 1–14 and carbon atom numbers (CANs) of 5–35. The most abundant class species in BOm and BOe are O4 and O3, respectively. According to the distribution of O n class species and the van Krevelen diagram, lignin-derived compounds are the main acidic species in the BOs. In addition, N1 O n ( n = 0–10) class species with DBE values of 1–14 and CANs of 7–35 were also identified. In positive-ion mode, most of detected compounds in BOm and BOe are N2 O n ( n = 1–6) class species with DBE values of 1–19 and CANs of 10–40, in which N2 O2 –N2 O4 class species with DBE = 8–12 and CAN = 19–28 are the most abundant. These results facilitate understanding thermochemical behavior of SSS.