Oxygen Delignification Two factors that dictate process design of o2 delignification AOXygen reacts only with units having free- phenolic hydroxyl group only at temperature above70° A Solubility of oxygen in water is very low, especially at temperature above 70.C ■Note Process condition for oxygen delignification South China University of TechnologySouth China University of Technology Oxygen Delignification Two factors that dictate process design of O2 delignification △Oxygen reacts only with units having free￾phenolic hydroxyl group only at temperature above 70℃ △Solubility of oxygen in water is very low, especially at temperature above 70℃ Note Process condition for oxygen delignification