The Formation of Coniferyl Alcohol During Alkaline Delignification with Anthraquinone – Part II

Abstract

Evidence has been gathered to demonstrate that coniferyl alcohol (CA) formation is predominantly a reaction of the initial phase of delignification. An attempt to link CA formation in the initial phase to the extent of delignification at the end of the cook indicated that the two processes were independent. Solutions of a commercial mixture of lignosulphonates also yielded CA when heated with alkali and catalysts like AQ. The relative effectiveness of certain redox catalysts to produce CA in this way correlates with their ability to accelerate the alkaline delignification of wood.