期刊
OZONE-SCIENCE & ENGINEERING
卷 25, 期 6, 页码 505-512出版社
TAYLOR & FRANCIS INC
DOI: 10.1080/01919510390481810
关键词
ozone; lignin; transition metal ions; kinetics
The kinetics of ozone reactions. with aqueous solutions of ligninsulfonate (LS) in the presence of transition metal ions Fe2+, Mn2+, Co2+ has been investigated. Metal ions are found to influence the rate and pathways of ozone reaction with LS. The acceleration of the reaction in the presence of Fe2+ is the most significant. The mechanism of these processes is discussed. The formation of Me2+ complex with LS functional groups is shown. Me2+ oxidation in [LS...Me2+] complex is indicated to be the limit stage of the reaction. Metal ions addition to LS solutions is proved to cause slowing down of LS aromatic rings destruction by ozone.
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