Preparation of strongly acidic cation-exchange resins from gymnosperm acid hydrolysis lignin |
| |
Authors: | Seiichi Yasuda Kyoko Asano |
| |
Institution: | (1) Division of Biological Material Sciences, Department of Biosphere Resources Science, Graduate School of Bioagricultural Sciences, Nagoya University, 464-8601 Nagoya, Japan |
| |
Abstract: | 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 reactivep-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).This paper was presented at the 43th Lignin Symposium, Fuchu, October 1998 |
| |
Keywords: | Lignin Sulfonation Cation-exchange resin Hydrolysis lignin Klason lignin |
本文献已被 SpringerLink 等数据库收录! |
|