Electro-deoxidation behavior of solid SeO2 in a low-temperature molten salt

Cheng Chang; Jiguo Tu; Yunfei Chen; Mingyong Wang; Shuqiang Jiao

doi:10.1039/d2cc02358j

Electro-deoxidation behavior of solid SeO₂ in a low-temperature molten salt

Chem Commun (Camb). 2022 Aug 11;58(65):9108-9111. doi: 10.1039/d2cc02358j.

Authors

Cheng Chang¹, Jiguo Tu^{1

2}, Yunfei Chen¹, Mingyong Wang¹, Shuqiang Jiao^{1

3}

Affiliations

¹ State Key Laboratory of Advanced Metallurgy, University of Science and Technology Beijing, Beijing, 100083, P. R. China. jtu15@ustb.edu.cn.
² Beijing Key Laboratory of Green Recovery and Extraction of Rare and Precious Metals, University of Science and Technology Beijing, Beijing 100083, P. R. China.
³ School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing 100083, P. R. China.

PMID: 35880659
DOI: 10.1039/d2cc02358j

Abstract

In this work, a low-temperature electro-deoxidation strategy of solid SeO₂ was proposed for the first time in neutral NaCl-AlCl₃ molten salt. Based on thermodynamic and electrochemical means, the deoxidation of SeO₂ was confirmed to be a two-step two-electron process. Besides, the electro-deoxidation products and their morphology evolution processes were revealed along with the change of potential. It is hoped that the deep understanding of preparing metal Se by direct electrolytic reduction can offer key insights into short-process and green metallurgy of other characteristic scattered metals.