Results 1 to 10 of about 734,317 (337)

MOF-derived cobalt nanoparticles catalyze a general synthesis of amines

open access: yesScience, 2017
Rajenahally V Jagadeesh   +2 more
exaly   +2 more sources

Effect of FeO content on melting characteristics and structure of nickel slag [PDF]

open access: yesJournal of Mining and Metallurgy. Section B: Metallurgy, 2022
Nickel smelting produces a large amount of nickel slag which contains a lot of Fe in the form of FeO. The effect of FeO content on the melting properties and structure of nickel slag is investigated by thermodynamic calculations and experiments, using ...
Ma Y.-T.   +7 more
doaj   +1 more source

Laser Powder Bed Fusion of K418 Superalloy: Process, Microstructure, Texture Feature, and Mechanical Property

open access: yesMetals, 2022
Laser Powder Bed Fusion (LPBF) is one of the most promising additive manufacturing (AM) technologies using metal powders. It has been increasingly applied in variety of industrial and engineering fields, including but not limited to aviation, aerospace ...
Zhen Chen   +6 more
doaj   +1 more source

CoN1O2 Single-Atom Catalyst for Efficient Peroxymonosulfate Activation and Selective Cobalt(IV)=O Generation.

open access: yesAngewandte Chemie, 2023
High-valent metal-oxo (HVMO) are powerful non-radical reactive species that enhance advanced oxidation processes (AOPs) due to their long half-lives and high selectivity towards recalcitrant water pollutants with electron-donating groups.
Xue Li   +9 more
semanticscholar   +1 more source

Rheological properties and resistance evolution of cemented unclassified tailings-waste rock paste backfill

open access: yes工程科学学报, 2023
Coarse aggregate paste filling is the core direction of today’s mine development. The coarse aggregate filling can effectively reduce the discharge of the solid mine waste, which is conducive to the realization of safe, clean, and efficient mining of the
Sheng-hua YIN   +5 more
doaj   +1 more source

Recovery of Rare Metals from Superalloy Scraps by an Ultrasonic Leaching Method with a Two-Stage Separation Process

open access: yesSeparations, 2022
Superalloy scraps are deemed as potential unconventional sources of rare metals. In this study, an ultrasonic leaching method with a two-stage separation process was proposed.
Long Wang   +9 more
doaj   +1 more source

Battery technology and recycling alone will not save the electric mobility transition from future cobalt shortages

open access: yesNature Communications, 2022
In recent years, increasing attention has been given to the potential supply risks of critical battery materials, such as cobalt, for electric mobility transitions. While battery technology and recycling advancement are two widely acknowledged strategies
Anqi Zeng   +11 more
semanticscholar   +1 more source

Effects of external dynamic disturbances and structural plane on rock fracturing around deep underground cavern

open access: yesInternational Journal of Coal Science & Technology, 2022
The occurrence of disasters in deep mining engineering has been confirmed to be closely related to the external dynamic disturbances and geological discontinuities. Thus, a combined finite-element method was employed to simulate the failure process of an
Fan Feng   +5 more
doaj   +1 more source

A Review on Regenerating Materials from Spent Lithium-Ion Batteries

open access: yesMolecules, 2022
Recycling spent lithium-ion batteries (LIBs) have attracted increasing attention for their great significance in environmental protection and cyclic resources utilization. Numerous studies focus on developing technologies for the treatment of spent LIBs.
Rui Xu   +5 more
doaj   +1 more source

Thermal Conductivity Model Analysis of Unsaturated Ice-Containing Soil

open access: yesGeofluids, 2022
In cold locales, the thermal conductivity of soil porous media varies according to their composition and the phase state of the substance contained within the pore space.
Qiang Han, Zhiguo Wang, Rui Qin
doaj   +1 more source

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