Aqueous, alkaline liquefaction of wood fractions and lignin models
The liquefaction of wood provides a complex mixture of compounds which can serve as a fuel or a source of specific chemicals. To understand and demystify the origins of these compounds, individual fractions of wood or model compounds have been investigated under aqueous, alkaline conditions. These included cellulose, hemicellulose, and lignin. Work concerning lignin was performed with models such as 2-phenoxy-1-phenyl-1-propanol with electron donating and withdrawing groups on the phenoxy ring. Alkaline cleavage of these models was examined and the mechanisms of cleavage were confirmed. Further investigation have modeled the occurrence of organic free radicals during the thermolysis of lignin models. Kinetics and mechanism of the cleavage involving radical intermediates will be discussed. 24 refs., 3 tabs.
- Research Organization:
- Pacific Northwest Lab., Richland, WA (USA)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 5134762
- Report Number(s):
- PNL-SA-15683; CONF-880518-2; ON: DE88009478
- Country of Publication:
- United States
- Language:
- English
Similar Records
Reactions of phenoxy radicals under coal liquefaction conditions
Computational Mechanistic Studies of Acid-Catalyzed Lignin Model Dimers for Lignin Depolymerization
Related Subjects
090122* -- Hydrocarbon Fuels-- Preparation from Wastes or Biomass-- (1976-1989)
140504 -- Solar Energy Conversion-- Biomass Production & Conversion-- (-1989)
37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400102 -- Chemical & Spectral Procedures
400201 -- Chemical & Physicochemical Properties
ALKALINE HYDROLYSIS
AROMATICS
CARBOHYDRATES
CELLULOSE
CHEMICAL COMPOSITION
CHEMICAL PREPARATION
CHEMICAL REACTION KINETICS
CHEMICAL REACTIONS
DECOMPOSITION
FUELS
HYDROLYSIS
HYDROXY COMPOUNDS
IONIZATION
KINETICS
LIGNIN
LYSIS
MAGNETIC RESONANCE
NUCLEAR MAGNETIC RESONANCE
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PHENOLS
POLYSACCHARIDES
PYROLYSIS
PYROLYSIS PRODUCTS
PYROLYTIC OILS
RADICALS
REACTION KINETICS
RESONANCE
SACCHARIDES
SOLVOLYSIS
STRUCTURE-ACTIVITY RELATIONSHIPS
SYNTHESIS
SYNTHETIC FUELS
THERMOCHEMICAL PROCESSES
WOOD