Reactivity Toward Phenol of Lignin from the Hydrolysis of Sweetgum Wood with Concentrated Sulfuric Acid
作者:
DurlubhK. Sharma,
IrvingS. Goldstein,
期刊:
Journal of Wood Chemistry and Technology
(Taylor Available online 1990)
卷期:
Volume 10,
issue 3
页码: 379-386
ISSN:0277-3813
年代: 1990
DOI:10.1080/02773819008050246
出版商: Taylor & Francis Group
数据来源: Taylor
摘要:
Sweetgum wood was hydrolyzed at 20°C and 50°C for different time periods with 68% sulfuric acid. The lignin residues obtained were subjected to a phenolation reaction. For lignin prepared at the lower temperature the maximum phenol uptake was 9.5%, and at the higher temperature only 5–6%. When wood prehydrolyzed with dilute acid was used the phenol uptake rose to 12.5%. However, all the sulfuric acid hydrolysis lignins showed much lower reactivity toward phenol than the 20% phenol uptake exhibited by lignin isolated using concentrated hydrochloric acid.
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