A Comparative Study on Reactions of Hydrogen Peroxide and Peracetic Acid with Lignin Chromophores. Part 1. The Reaction of Coniferaldehyde Model Compounds

✍ Scribed by Pan, George X.; Spencer, Liam; Leary, Gordon J.

• Book ID: 125477308
• Publisher: Walter de Gruyter GmbH & Co. KG
• Year: 2000
• Tongue: German
• Weight: 121 KB
• Volume: 54
• Category: Article
• ISSN: 0018-3830
• DOI: 10.1515/hf.2000.025

✦ Synopsis

Summary

The reactions of chromophoric model compounds of the coniferaldehyde type with hydrogen peroxide and
peracetic acid have been investigated in relation to lignin-retaining bleaching. Analysis of the main reaction
products indicated that the side chain of coniferaldehyde could cleave either between the α, β double
bond or between the β, γ bond. Comparison of possible reaction pathways to the formation of oxidation
products from hydrogen peroxide and peracetic acid suggested that peracetic acid is more effective than
hydrogen peroxide. Advantages of peracetic acid over hydrogen peroxide include a faster rate of reaction,
more efficient utilization of the bleaching agent and less likelihood of producing new chromophores.