Effect of Mo alloying on vacancy-defect evolution and irradiation damage in titanium alloy

Shi, Yunmei; Wang, Qianqian; Yang, Qigui; Song, Zhian; Wan, Mingpan; Ma, Rui; Zhang, Peng; Wang, Baoyi; Cao, Xingzhong; Zhu, Te

doi:10.1016/j.jallcom.2023.172130

Cited by 3 publications

(1 citation statement)

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“…Molybdenum (Mo), with its prominent features of high melting point, tensile strength, and corrosion resistance, is a strategic metal for the steel, petrochemical, aerospace, national defense. , Due to the growing demand and extraction rate, the alarm that the exploitable primary resources of Mo will be exhausted within 50–100 years has been sounded . Hence, the sustainable development of Mo has to take place through recovering Mo from secondary resources.…”

Section: Introductionmentioning

confidence: 99%

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: Introductionmentioning

confidence: 99%