Results 11 to 20 of about 1,843,878 (304)

High Value Conversion Technology of Nickel in Waste Electrolytes of Nitrogen Trifluoride by Electrolysis

open access: yesSeparations, 2023
The method of precipitation treatment of high-nickel waste electrolytic slag was studied, coupled with multi-step treatment to improve the recovery rate of nickel. In this study, HNO3 was used as dissolving agent, NaOH and Na2CO3 as precipitating agents,
Yongzhuan Ren   +3 more
doaj   +1 more source

Charge order, orbital order, and electron localization in the Magneli phase Ti4O7 [PDF]

open access: yes, 2004
The metal-insulator transition of the Magneli phase Ti4O7 is studied by means of augmented spherical wave (ASW) electronic structure calculations as based on density functional theory and the local density approximation.
Abbate   +28 more
core   +2 more sources

Modification of activated carbon via grafting polyethyleneimine to remove amaranth from water

open access: yesApplied Water Science, 2017
A new adsorbent was fabricated via grafting polyethyleneimine (PEI) on activated carbon (AC) to remove anionic amaranth from water. X-ray photoelectron spectroscopy and Fourier transform infrared spectroscopy were used to characterize the grafting ...
Likang Fu   +4 more
doaj   +1 more source

An Alternative Approach for Identifying Nonlinear Dynamics of the Cascade Logistic-Cubic System

open access: yesMathematics, 2022
The 0-1 test for chaos, which is a simple binary method, has been widely used to detect the nonlinear behaviors of the non-cascade chaotic dynamics. In this paper, the validity checks of the 0-1 test for chaos to the popular cascade Logistic-Cubic (L-C ...
Yanan Liao   +3 more
doaj   +1 more source

Reactivity of a trimethylstannyl molybdenum complex in mesoporous MCM-41 [PDF]

open access: yes, 1994
A highly thermostable tin–molybdenum complex is encapsulated into the hexagonal mesoporous channel host MCM-41 and thermally transformed into supported metal ...
Bein, Thomas   +2 more
core   +1 more source

The Enhancing Effect of Microwave Irradiation and Ultrasonic Wave on the Recovery of Zinc Sulfide Ores

open access: yesHigh Temperature Materials and Processes, 2017
A novel process for the treatment of zinc sulfide ores is discussed in this paper, which consists of two procedures: microwave roasting pretreatment and synergistic chelation. What’s more, the reaction mechanism also has been studied.
Yang Kun   +7 more
doaj   +1 more source

Effect of Cd2+ on Electrodeposition of Copper in Cyclone Electrodeposition

open access: yesMetals, 2021
A strategy to determine the effect of Cd2+ on the electrodeposition of copper from a copper electrolyte by cyclone electrowinning is presented. The concentration of Cu2+ in the copper electrolyte with different Cd2+ concentrations was determined by ...
Yan Wang, Bo Li, Hongao Xu, Jihao Guo
doaj   +1 more source

Mechanism of CaF2 under Vacuum Carbothermal Conditions for Recovering Nickel, Iron, and Magnesium from Garnierite

open access: yesMetals, 2020
Nickel laterite ore is divided into three layers and the garnierite examined in this study belongs to the third layer. Garnierite is characterized by high magnesium and silicon contents.
Qiang Wang   +6 more
doaj   +1 more source

Copper(II)- and gold(III)-mediated cyclization of a thiourea to a substituted 2-aminobenzothiazole [PDF]

open access: yes, 2017
Benzothiazole derivatives are a class of privileged molecules due to their biological activity and pharmaceutical applications. One route to these molecules is via intramolecular cyclization of thioureas to form substituted 2-aminobenzothiazoles, but ...
Dawe, Louise N.   +2 more
core   +2 more sources

Gold Extraction from Cyanidation Tailing Using Microwave Chlorination Roasting Method

open access: yesMetals, 2018
At present, gold mines are increasingly scarce in the world. The yield of cyanidation tailing (CT) of refractory gold ores with a grade of 10 g/T is huge; however, the effective capitalization of the cyanidation tailing is a significant problem in the ...
Fei Zhu   +6 more
doaj   +1 more source

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