Application of Pd-coated NiCu-LDH electrocatalyst in preparation of glycollic acid by electrocatalysis of PET hydrolysate

Abstract

The invention discloses an application of a Pd-coated NiCu-LDH electrocatalyst in preparation of glycollic acid by electrocatalysis of PET hydrolysate, a three-electrode system is adopted, an electrode containing the Pd-coated NiCu-LDH electrocatalyst is used as a working electrode, a saturated calomel electrode is used as a reference electrode, a platinum sheet is used as a counter electrode, and the PET hydrolysate is used as electrolyte. Pulse voltage is applied to the H-type electrolytic tank for an electro-catalytic reaction, and the PET hydrolysate is oxidized into glycollic acid; in the Pd-coated NiCu-LDH electrocatalyst, the loading capacity of Pd is 20-30 wt%, and the atomic ratio of NiCu is 1: 1. The PET hydrolysate is subjected to electro-catalysis under the continuous pulse change potential, the poisoning effect of the electro-catalyst is effectively reduced, the electro-catalysis current density is remarkably improved, the stability of the electro-catalyst and the glycollic acid selectivity are further improved, and upgrading utilization of the waste PET plastic hydrolysate is achieved.

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