Oxidation of phenolic compounds during autothermal pyrolysis of lignocellulose [electronic resource]

• Ngôn ngữ: eng
• Ký hiệu phân loại: 541.3 Miscellaneous topics in physical chemistry
• Thông tin xuất bản: Washington, D.C. : Oak Ridge, Tenn. : United States. Dept. of Energy. Office of Energy Efficiency and Renewable Energy ; Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy, 2020
• Mô tả vật lý: Size: Article No. 104853 : , digital, PDF file.
• Bộ sưu tập: Metadata
• ID: 262655
• Chủ đề: 1. 37 inorganic, organic, physical, and analytical chemistry; 2. Autothermal; 3. Biomass; 4. Lignin; 5. Pyrolysis

Tóm tắt

Fast pyrolysis is traditionally defined as the rapid decomposition of organic material in the absence of oxygen to produce primarily a liquid product known as bio-oil. However, the introduction of small amounts of oxygen to the process holds prospects of internally generating the energy needed for pyrolysis. The present study investigates the partial oxidation of lignin-derived compounds during pyrolysis, which generates both carbon oxides and aromatic carbonyl compounds. Analysis of lignin derived phenolic compounds was performed to determine if the composition had changed under oxidative conditions. NMR analyses indicates aromatic carbonyls increased under oxidative conditions, with a corresponding decrease in phenolic hydroxyl groups. Finally, model phenolic compounds were pyrolyzed to help understand the role of partial oxidation during autothermal pyrolysis of lignocellulosic biomass.