J. Miki et al., ALKALI-PROMOTED NIO-FE2O3 CATALYSTS FOR VAPOR-PHASE OXIDATION OF BENZOIC-ACID TO PHENOL, Journal of the Chemical Society, Chemical Communications, (14), 1994, pp. 1685-1686
Addition of Na2O to the NiO-Fe2O3 catalyst system was found to be very
effective for increasing the space-time yield of phenol while maintai
ning high phenol selectivity; a reaction route to phenol formation via
sodium benzoate is proposed.