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Anthraquine Research Paper

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Anthraquinone is a pulping catalyst that cycles between its insoluble oxidized form and its soluble reduced form. Kaye, A. (1999). The first step in the sequence is the reaction of AQ with the reducing group of a carbohydrate. This stabilizes the carbohydrate against the "peeling reaction," (KemAQ, n.d, para. 2) (the systematic removal of the sugar units at the reducing end of the cellulose or hemicellulose) and produces anthrohydroquinone (AHQ), which can participate, again in the redox cycle (oxidation reduction). (KemAQ, n.d, para. 2) Therefore, AQ/AHQ improves yield by stabilizing the carbohydrates and delignification. Kaye, A. (1999). Significantly, these additives are changing the digester control systems into a better quality control

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