甘油
制氢
氢
氧化剂
阴极
阳极
化学
二羟丙酮
化学工程
洗脱
材料科学
色谱法
有机化学
电极
工程类
物理化学
作者
Jie Yu,Jesús González‐Cobos,F. Dappozze,N. Grimaldos-Osorio,P. Vernoux,A. Caravaca,C. Guillard
标识
DOI:10.1016/j.apcatb.2023.122465
摘要
The photoelectrocatalytic (PEC) valorization of glycerol is emerging for the co-generation of hydrogen and value-added organics like glyceraldehyde (GAD) or dihydroxyacetone (DHA). In this work, we have designed, tested and optimized a pioneering photoelectrolyser with a non-noble metal-based photoanode (WO3), operating in near-neutral conditions and using a proton-exchange membrane (PEM) which ensures the elution of a purified hydrogen stream from the cathode side while selectively oxidizing glycerol on the anode. The influence of light irradiation, external bias and cell temperature has been investigated, leading to GAD and DHA production rates of 11.1 and 5.2 mmol m−2 h−1 at 60 ºC and 1.2 V, along with 44.0 mmol H2 m−2 h−1. The long-term stability of the photoelectrolyser has also been validated and the particularities of this system with respect to other conventional devices have been discussed. PEC stands as a promising sustainable technology for the simultaneous H2 generation and biomass valorization.
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