Journal
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
Volume 50, Issue 19, Pages 11288-11296Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ie2011356
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Funding
- National Basic Research Program of China (973 Program) [2010CB732205]
- Fair of Science and Technical Achievements Resulting from Cooperation of Industry, Education and Academy [2010A090200038]
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Alkaline lignin was liquefied under hydrothermal conditions, and the liquefied products were effectively separated into four main types of substances: benzenediols, monophenolic hydroxyl products, weak-polar products, and water-soluble products (low-molecular-weight organic acids, alcohols, etc.). The production process and yield of each classified products are discussed. More than half of the yields of the oil products consisted of phenolics. A mechanism for phenolic production from lignin liquefaction is proposed. It suggests that the decomposition of lignin under hydrothermal conditions occurs mainly by three steps: hydrolysis and cleavage of the ether bond and the C-C bond, demethoxylation, and alkylation.
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