期刊
JOURNAL OF WOOD SCIENCE
卷 46, 期 6, 页码 477-479出版社
SPRINGER-VERLAG TOKYO
DOI: 10.1007/BF00765807
关键词
lignin; sulfonation; cation-exchange resin; hydrolysis lignin; Klason lignin
The chemical preparation of strongly acidic cation-exchange resin from sulfuric acid lignin (Klason lignin) (SAL), a typical acid hydrolysis lignin, was investigated. Sulfonation of resinified SAL itself gave a resin with an ion-exchange capacity of 2.3 mEq/g. After resinification with formaldehyde, the phenolized SAL with a reactive p-hydroxyphenyl group yielded a resin with an ion-exchange capacity of 3.2 mEq/g. The latter capacity is superior to that of the corresponding commercial phenol-type resins (2-3 mEq/g), but did not reach the level of the corresponding commercial styrene-type resins (4-5 mEq/g).
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