Sustainable Conversion of Glycerol into Value‐Added Chemicals by Selective Electro‐Oxidation on Pt‐Based Catalysts

• DOI: 10.1002/celc.201800309
• Publication Date: 2018-05-18T07:35:49Z
• Authors: Yongfang Zhou; Yi Shen; Jinhua Piao
• Keywords: Glyceric acid; Glycolic acid; Catalytic Oxidation; Nanosheet

Abstract Electro‐oxidation of glycerol affords a totally green route to produce high value‐added chemicals. Herein, we report study on electro‐oxidation over series graphene nanosheet supported Pt (Pt/GNS), PtNi (PtNi/GNS), PtRu (PtRu/GNS), PtRh (PtRh/GNS), PtRuNi (PtRuNi/GNS), and PtRhNi (PtRhNi/GNS) catalysts in alkaline solution. The activity the was evaluated by cyclic voltammetry, linear sweep chronoamperometric measurements. PtRh/GNS PtRhNi/GNS exhibited superior terms higher current densities lower onset potentials. products oxidation formed at potentials −0.4, −0.1, 0.2 V, were systematically analyzed performance liquid chromatography (HPLC). Five compounds as from catalyzed prepared materials found, including glyceraldehyde, glycolic acid, tartronic glyceric acid oxalate acid. product distribution different investigated for all catalysts. A maximum selectivity 65.4 % obtained Pt/GNS catalyst V while 47.7 achieved using PtNi/GNS −0.1 V. It found that introduction Ru facilitated formation C3 addition Rh beneficial C2 products. Based HPLC results, pathways proposed.