Results 261 to 270 of about 150,716 (298)

Ru-Catalyzed Hydrogenolysis of Lignin: Base-Dependent Tunability of Monomeric Phenols and Mechanistic Study

ACS Catalysis, 2019
Substantial attention has been given to depolymerization of lignin into monomeric phenols in recent years because lignin is a renewable and CO2-netural aromatic resource. Recent results indicated that the base can shift the selectivity from C3-fragmented
Helong Li, Guoyong Song
exaly   +2 more sources

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Effect of Lignin Structure Characteristics on the Performance of Lignin Based Phenol Formaldehyde Adhesives

Macromolecular Rapid Communications
AbstractAs the second most abundant biopolymer, lignin remains underutilized in various industrial applications. Various forms of lignin generated from different methods affect its physical and chemical properties to a certain extent. To promote the broader commercial utilization of currently available industrial lignins, lignin sulfonate (SL), kraft ...
Xinwen, Xu, Haiming, Li, Xing, Wang, Haiqiang, Shi, Meihong, Niu, Yongchao, Zhang, Zhiwei, Wang, Yanzhu, Guo   +7 more
openaire   +2 more sources

Hydrocracking of organocell lignin for phenol production

Biomass and Bioenergy, 1994
Abstract Organocell lignin has been subjected to catalytic hydrocracking in a semicontinuous reactor system using four petroleum-derived slurry oils and a lignin-derived one. The objective was to maximize the yield of phenols which can be further converted to methylarylethers for the use as gasoline octane number improvement. Experiments were carried
D. Meier, J. Berns, O. Faix, U. Balfanz, W. Baldauf   +4 more
openaire   +1 more source

Phenol Formaldehyde Resin Modification with Lignin

Polymer-Plastics Technology and Engineering, 2003
Abstract Lignin (poly‐phenylpropane units) was precipitated from waste black liquor produced by paper manufacture from rice straw. The use of this lignin as partial substitution of phenol in phenol formaldehyde resin is investigated. The effect of different variables [e.g., lignin concentration, ratio of formaldehyde to phenol lignin (phenol + lignin),
Abda‐Alla M. A. Nada, Hussein Abou‐Youssef, Souad E. M. El‐Gohary   +2 more
openaire   +1 more source

Lignin phenols in soils as biomarkers of paleovegetation

Eurasian Soil Science, 2015
It has been shown by the methods of biochemistry, nuclear magnetic resonance, and isotope geochemistry that the proportions of lignin phenols may be used as molecular traces of paleovegetation due to their biochemical and physiological specificity and high resistance to decomposition.
N. O. Kovaleva, I. V. Kovalev
openaire   +1 more source

Lignin-to-chemicals: Application of catalytic hydrogenolysis of lignin to produce phenols and terephthalic acid via metal-based catalysts

International Journal of Biological Macromolecules, 2021
Yanqiao Jin
exaly  

Enzymatic modification of lignin: Synthesis of lignin-phenol copolymers

Enzyme and Microbial Technology, 1991
Janet L. Popp, Jonathan S. Dordick
openaire   +1 more source

Renewable lignin-based carbon nanofiber as Ni catalyst support for depolymerization of lignin to phenols in supercritical ethanol/water

Renewable Energy, 2020
Xing Wang, Ying Han, Xing Wang
exaly  

MOF-derived NiM@C catalysts (M = Co, Mo, La) for in-situ hydrogenation/hydrodeoxygenation of lignin-derived phenols to cycloalkanes/cyclohexanol

Fuel, 2022
Jianchun Jiang, Haihong Xia
exaly  

Lignin-Based Phenols

2017
S. Shukla, B. Lochab
openaire   +1 more source