Modeling lignin liquefaction: 1. Catalytic hydroprocessing of lignin-related methoxyphenols and interaromatic unit linkages

Journal Article · Thu Jan 01 00:00:00 EST 1987 · Fuel Sci. Technol. Int.; (United States)

DOI:https://doi.org/10.1080/08843758708915845· OSTI ID:6509681

Petrocelli, F P; Klein, M T

The reactions of two sets of lignin model compounds over a sulfided CoOMoO/sub 3//..gamma..-Al/sub 2/O/sub 3/ catalyst were studied. The first set mimicked lignin methoxyphenol residues and comprised 4-methyl-guaiacol, 4-methylcatechol, eugenol and vanillin. Deoxygenation and hydrogenation were facile and led to ultimate molar yields of single-ring products as high as 0.70. The selectivity to single-ring products increased with increases in temperature. o-hydroxydiphenylmethane, phenyl ether and o,o'-biphenol constituted the second set that mimicked thermally stable lignin bonds. Fragmentation of o-hydroxydiphenylmethane and phenyl ether occurred readily; o,o'-biphenol reacted to dibenzofuran.

• Research Organization: Dept. of Chemical Engineering, Univ. of Delaware, Newark, DE 19716
• OSTI ID: 6509681
• Journal Information: Fuel Sci. Technol. Int.; (United States), Vol. 5:1
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC
ORGANIC
PHYSICAL AND ANALYTICAL CHEMISTRY
LIGNIN
LIQUEFACTION
PHENOLS
HYDROCRACKING
ALUMINIUM OXIDES
AROMATICS
BENZOFURANS
CATALYSTS
CHEMICAL REACTION KINETICS
CHEMICAL REACTION YIELD
COBALT OXIDES
HYDROGENATION
METHANE
MOLYBDENUM OXIDES
PHENYL ETHER
PYROCATECHOL
REDUCTION
TEMPERATURE EFFECTS
ALKANES
ALUMINIUM COMPOUNDS
CARBOHYDRATES
CHALCOGENIDES
CHEMICAL REACTIONS
COBALT COMPOUNDS
CRACKING
DECOMPOSITION
DEVELOPERS
ETHERS
FURANS
HETEROCYCLIC COMPOUNDS
HYDROCARBONS
HYDROXY COMPOUNDS
KINETICS
MOLYBDENUM COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLYPHENOLS
POLYSACCHARIDES
PYROLYSIS
REACTION KINETICS
REFRACTORY METAL COMPOUNDS
SACCHARIDES
THERMOCHEMICAL PROCESSES
TRANSITION ELEMENT COMPOUNDS
YIELDS
400201* - Chemical & Physicochemical Properties