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Oxidative Leaching of Molybdenum from Spent Mo-Ni/Al2O3Hydrogenation Catalysts by Hydrogen Peroxide and Ammonia AITranslate

ZHAO Ge; ZHANG Guang-ji; LIANG Jie; SHEN Cai-long; LYU Yue-fen; CHEN Yan-zhen; YANG Chao
School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing);School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing);School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing);School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing);School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing);School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing);School of Chemical and Environmental Engineering,China University of Mining and Technology(Beijing)
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

An oxidative leaching process of hydrogen peroxide combined with ammonia was proposed for selective leaching of molybdenum from spent nickel-molybdenum hydrogenation catalysts.The effects of hydrogen peroxide dosage,leaching temperature and leaching time on the leaching rate of molybdenum were studied by experiments,and the leaching residue was characterized by SEM,EDS and XRD.The results show that the leaching rate of molybdenum can reach over 97%under the conditions of a reaction system pH of 8~9 maintained by adding ammonia,hydrogen peroxide dosage of 2.0 times the theoretical amount,leaching temperature of 80℃,leaching time of 120 min,and stirring speed of 250 r/min,while the dissolution rates of aluminum and nickel remain at a low level.

KeyWords AITranslate

spent hydrogenation catalyst hydrogen peroxide ammonia oxidative leaching moly bdenum aluminum nickel
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DOI：

Chinese Library Classification Number:TF841.2[冶金工程—有色金属冶金]

Citation Information:

An oxidative leaching process of hydrogen peroxide combined with ammonia was proposed for selective leaching of molybdenum from spent nickel-molybdenum hydrogenation catalysts.The effects of hydrogen peroxide dosage,leaching temperature and leaching time on the leaching rate of molybdenum were studied by experiments,and the leaching residue was characterized by SEM,EDS and XRD.The results show that the leaching rate of molybdenum can reach over 97%under the conditions of a reaction system pH of 8~9 maintained by adding ammonia,hydrogen peroxide dosage of 2.0 times the theoretical amount,leaching temperature of 80℃,leaching time of 120 min,and stirring speed of 250 r/min,while the dissolution rates of aluminum and nickel remain at a low level.

quote

GB/T 7714-2015 [1] ZHAO Ge, ZHANG Guang-ji, LIANG Jie, et al. Oxidative Leaching of Molybdenum from Spent Mo-Ni/Al2O3Hydrogenation Catalysts by Hydrogen Peroxide and Ammonia[J]. Rare Metals and Cemented Carbides, 2023(6): 16-22.
MLA [1] ZHAO Ge, et al., "Oxidative Leaching of Molybdenum from Spent Mo-Ni/Al2O3Hydrogenation Catalysts by Hydrogen Peroxide and Ammonia." Rare Metals and Cemented Carbides, no. 6, 2023, pp. 16-22.
APA [1] ZHAO Ge, ZHANG Guang-ji, LIANG Jie, SHEN Cai-long, LYU Yue-fen, CHEN Yan-zhen, & YANG Chao. (2023). Oxidative Leaching of Molybdenum from Spent Mo-Ni/Al2O3Hydrogenation Catalysts by Hydrogen Peroxide and Ammonia. Rare Metals and Cemented Carbides(6), 16-22.
IEEE [1] ZHAO Ge, ZHANG Guang-ji, LIANG Jie, SHEN Cai-long, LYU Yue-fen, CHEN Yan-zhen, and YANG Chao, "Oxidative Leaching of Molybdenum from Spent Mo-Ni/Al2O3Hydrogenation Catalysts by Hydrogen Peroxide and Ammonia," Rare Metals and Cemented Carbides, no. 6, pp. 16-22, 2023. keywords: {spent hydrogenation catalyst;hydrogen peroxide;ammonia;oxidative leaching;moly bdenum;aluminum;nickel}