Glass phase extraction for one-step separation and recovery of strategic metals from spent hydrofining catalysts

Cai, Yuanyuan; Nie, Zuoren; Xi, Xiaoli; Lu, Yue; Zhang, Yajiao; Huang, Guoyu; Shi, Caijuan; Deng, Lu; Zhao, Zhiyong; Tian, Yingliang

doi:10.1016/j.cej.2023.146543

Cited by 4 publications

(2 citation statements)

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“…The chemical composition of the spent catalyst powder was reported in a previous work (23.50 wt % Al, 11.00 wt % Mo, 2.88 wt % S, 2.88 wt % Ni, and 1.72 wt % Si). 20 The chemical compositions of binary and ternary glass extraction systems are SiO 2 (Aladdin Reagent Co., Ltd., 99%), Na 2 O, and B 2 O 3 . Among them, Na 2 O and B 2 O 3 were introduced by Na 2 SO 4 (Tianjin Guangfu Technology Development Co., Ltd., 99.0%) and H 3 BO 3 (Beijing Tongguang Fine Chemicals Co., 99.5%), respectively.…”

Section: ■ Methodologymentioning

confidence: 99%

“…In this experiment, the raw material for the spent MoNi/γ-Al 2 O 3 HDS catalyst powder was provided by Xiamen Tungsten Co., Ltd., China. The chemical composition of the spent catalyst powder was reported in a previous work (23.50 wt % Al, 11.00 wt % Mo, 2.88 wt % S, 2.88 wt % Ni, and 1.72 wt % Si) . The chemical compositions of binary and ternary glass extraction systems are SiO 2 (Aladdin Reagent Co., Ltd., 99%), Na 2 O, and B 2 O 3 .…”

Section: Methodsmentioning

confidence: 99%

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Highly Selective Separation and Recovery of Molybdenum from Spent Catalysts by Constructing a Glass-Phase Extraction System

Cai,

Nie,

et al. 2024

ACS Sustainable Chem. Eng.

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Separation and recovery of molybdenum (Mo) with high concentrations from spent catalysts is a strategy for avoiding the environmental footprint by metal mining and the disposal of hazardous wastes, while alleviating resource shortage. In this paper, a method for constructing a binary (SiO 2 −Na 2 O)/ternary (SiO 2 − Na 2 O−B 2 O 3 ) glass phase extraction (GPE) system to selectively extract the impurity metal ions from spent catalysts as well as simultaneously separate and recover Mo is presented. Based on experimental studies and classical molecular dynamics simulations, compared with the binary glass network, 99.4% of Al 3+ and Ni 2+ in spent catalysts were extracted in a more stable tetra-coordinated form at a lower melting temperature (1200 °C) by the ternary GPE system introducing B 2 O 3 , accompanied by Na 2 MoO 4 precipitated as the recovery product. The recovery efficiency of Mo was 98.1%, realizing an efficient separation and short-process recovery. Moreover, the separation of Na 2 MoO 4 melt and glassy liquid during the melting process was visually observed online. Therefore, this approach of constructing glass GPE systems for the one-step separation of metals during the melting process is expected to contribute to the sustainable supply of critical metals.

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Section: ■ Methodologymentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%