Results 181 to 190 of about 8,681 (223)
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The topochemistry of delignification reactions.
1972This item was digitized as part of a project to share McGill's intellectual legacy with the public. If you are the copyright holder or a relative of the copyright holder who is deceased, you may request withdrawal by emailing escholarship.library@mcgill.ca.
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The Role of Hemicellulose in the Delignification of Wood
Canadian Journal of Chemistry, 1975Hemicellulose was selectively removed from white birch by treatment with cold alkali. Untreated and alkali-treated samples were pulped to various stages of delignification by the acid chlorite process. The acid chlorite reagent was shown to be selective for lignin removal from both samples during the first 60% of delignification.In alkali-treated ...
A. J. Kerr, D. A. I. Goring
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Biological Delignification Of Biomass
2016The annual production of lignocellulosic matters has been estimated about, 1010 metric tons worldwide [2]. The main constituents of the lignocellulosic biomass are cellulose (a homopolymer of glucose), hemicellulose (a heteropolymer of pentoses and hexoses) and lignin (a polymer of phenyl propanoid units) [82].
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Delignification of Biomass Using Alkaline Glycerol
Energy Sources, 2005Ailanthus altissima and Spruce orientalis chips were delignified by using glycerol as a solvent and alkaline-gliycerol with and without catalyst at different temperatures (438, 458, 478, and 498 K) in atmospheric pressure, and results were compared with the other organic solvent systems.
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On the role of carbohydrates in oxygen delignification
Nordic Pulp & Paper Research Journal, 2005The long-term trend regarding wood is an increase in price. Because wood contributes to a large part of production costs, the efficient utilisation of wood is greatly desired to reduce production costs for kraft pulp producers. During the 1990s, the development of improved modified kraft cooking began, which led to higher yields. There was also a trend
Helena Wedin +2 more
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Delignification By Wood-Decay Fungi
Annual Review of Phytopathology, 1991Wood decay fungi are unique because of their capacity to decompose lignified cell walls. A few species are of special interest because they can selectively remove lignin from wood without extensive cellulose degradation. Lignin is a complex, heterogeneous phenylpropanoid structural polymer that occurs throughout the cell wall (71, 112).
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Oxidative Delignification of Flax Fiber
Russian Journal of Applied Chemistry, 2003Oxidative delignification of flax fiber at 98°C was studied. The intermediate material was produced in moderate yield with high degree of delignification. The optimum conditions of the process were determined.
S. N. Petrova +2 more
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Hardwood Kraft Delignification
Kraft pulping is a globally significant industrial process whose complexity, stemming from the multi-scale heterogeneity of wood, means a complete understanding of its underlying physicochemical mechanisms remains elusive. This thesis presents research aimed at advancing the fundamental understanding of the kinetics of delignification—the primary step ...openaire +1 more source
The Chemistry of Delignification. A General Concept
Holzforschung, 1982The reactions of lignins during pulping and bleaching are divided into two categories, i.e. nucleophilic additions and displacements, involved in pulping processes, in later phases of lignin-degrading bleaching and in lignin-retaining bleaching, and electrophilic additions and displacements, initiating lignin-degrading bleaching processes.
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Chlorite delignification of spruce wood.
1970This item was digitized as part of a project to share McGill's intellectual legacy with the public. If you are the copyright holder or a relative of the copyright holder who is deceased, you may request withdrawal by emailing escholarship.library@mcgill.ca.
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