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Cu based catalysts with a base promoter are reported for the first time for the synthesis of lactic acid from glycerol without using either a reductant or an oxidant. The catalytic route presented here gives high yields at lower temperatures (473 K) and lower molar NaOH/glycerol ratios (1.5) compared to the known hydrothermal (553−573 K) route. Further, the Cu 2 O catalyst shows excellent recyclability.
Roy et al. (Mon,) studied this question.