RADIATION-INDUCED EFFECTS IN LIGNIN MODEL COMPOUNDS - A PULSE AND STEADY-STATE RADIOLYSIS STUDY

被引：6
|
作者：
CHUAQUI, CA
RAJAGOPAL, S
KOVACS, A
STEPANIK, T
MERRITT, J
GYORGY, I
WHITEHOUSE, R
EWING, D
机构：
[1] AECL,RES,WHITESHELL LABS,RES CHEM BRANCH,PINAWA R0E 1L0,MB,CANADA
[2] HUNGARIAN ACAD SCI,INST ISOTOPES,H-1525 BUDAPEST,HUNGARY
来源：
TETRAHEDRON | 1993年 / 49卷 / 43期
关键词：
PULSE RADIOLYSIS; GAMMA-RADIOLYSIS; IRRADIATION; LIGNIN; MODEL COMPOUNDS;
D O I：
10.1016/S0040-4020(01)80172-1
中图分类号：
O62 [有机化学];
学科分类号：
070303 ; 081704 ;
摘要：
A lignin model compound beta-(2-methoxyphenoxy)-3,4-dimethoxyacetophenone (I) was subjected to Co-60 gamma irradiation and pulse radiolysis under different conditions (dose, medium, pH). Interaction with hydroxyl radicals resulted in aryl hydroxylation, fragmentation, and cleavage. A hydroxylation-cleavage pathway was found at all pH values. At alkaline pH, fragmentation reactions were also observed. The predominant reaction with solvated electrons was fragmentation of the beta-aryl ether bond followed by cleavage reactions.
引用
收藏
页码：9689 / 9698
页数：10
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