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The study of characterization of extracted vanadium in waste catalyst for vanadium redox flow battery

폐촉매에서 추출한 바나듐 레독스 흐름전지용 바나듐의 특성 연구

  • Kang, Ung Il (Departmaent of fire Service Administration, Honam University)
  • 강웅일 (호남대학교 소방행정학과)
  • Received : 2018.08.07
  • Accepted : 2018.10.05
  • Published : 2018.10.31

Abstract

This study examined the characteristics of the waste catalyst used in the petroleum refinery operations. The total pore volume, specific surface area, and average pore size of the spent catalyst used in the petroleum refinery operations were 3.96cc/g, 13.81m2/g, and 1.15A, respectively. The weight loss observed in the range from $25^{\circ}C-700^{\circ}C$ for the spent catalysts using TG and DTA was approximately 23 wt. %. EDS analysis of the waste catalyst sample showed that the five major components were vanadium, nickel, manganese, iron, and copper. The extraction system is attractive for liquid-liquid extraction. In this study, Cynex 272 was used to extract vanadium from waste catalyst. The electrochemical characteristics of the extracted vanadium solution were measured by cyclic voltammetry (CV). As a result, an oxidation / reduction peak appeared, indicating the potential of an electrolytic solution.

Keywords

VRFB;Waste catalyst;Vanadium;Solvent extraction;EDS;TG-DTA

Acknowledgement

Supported by : 호남대학교

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