Results 31 to 40 of about 10,852 (290)

Geochronology of Mexican mineral deposits. II: Veta Madre and Sierra epithermal vein systems, Guanajuato district [PDF]

open access: yes, 2015
This paper presents two new high-resolution geochronological determinations for the epithermal deposits in the World-class Guanajuato mining district, in central Mexico.
Camprubi, Antoni   +4 more
core   +1 more source

Thermodynamic and kinetic analyses and experimental verification of tellurium and bismuth recovery from bismuth telluride waste by selective sulfidation-vacuum volatilization

open access: yesJournal of Materials Research and Technology, 2023
The recovery of tellurium and bismuth from bismuth telluride waste is of great significance in improving the utilization levels of renewable resources, protecting the ecological environment and alleviating the problem of resource shortages. In this paper,
Jinping Ma   +10 more
doaj   +1 more source

Synthesis of WS2/CNT hybrid nanoparticles for fabrication of hybrid aluminum matrix nanocomposite

open access: yesMaterials Research Express, 2020
In this study, a simple, safe and cost-effective method was developed for fabricating the tungsten disulfide/carbon nanotube (WS _2 /CNT) hybrid nanoparticles via chemical vapor deposition (CVD) process.
Hossein Salehi Vaziri   +2 more
doaj   +1 more source

Infrared Spectroscopic Evidence of WS2 Morphology Change With Citric Acid Addition and Sulfidation Temperature

open access: yesFrontiers in Chemical Engineering, 2022
MS2 morphology is strongly influenced by several parameters including the addition of a chelating agent and sulfidation temperature. In this work, we report the use of citric acid as chelating agent in order to prepare a series of WS2/Al2O3 catalysts ...
Luz A. Zavala-Sanchez   +3 more
doaj   +1 more source

Machine learning-derived reaction statistics for 3D spectroimaging of copper sulfidation in heterogeneous rubber/brass composites

open access: yesCommunications Materials, 2023
The sulfidation of copper derived from copper-zinc alloy (brass) in sulfur-containing rubber, used for plating steel-cord-reinforced rubber tires, is suggested to be the key reaction for the adhesive behavior between brass and rubber in tires.
Hirosuke Matsui   +9 more
doaj   +1 more source

Catalytic performance of CoMoW Sulfide catalysts supported on hierarchically structured porous silicas for HDS reactions

open access: yesChemical Engineering Journal Advances, 2023
In this work, monolithic silica materials with hierarchical porosity were synthesized by the sol-gel method combined with a dual hard-soft templating route.
M.A. López-Mendoza   +8 more
doaj   +1 more source

Interactions between Molten High‐Silicon Electrical Steels and Carbon‐Bonded MgO Refractories Based on Recyclates

open access: yesAdvanced Engineering Materials, EarlyView.
This study examines how several molten high‐silicon electrical steels interact with both conventional and recycled MgO–C refractories. For this, various immersion experiments are conducted. In addition to infiltration, a number of mechanisms are identified and explained that control the corrosion of the refractory material.
Lukas Neubert   +7 more
wiley   +1 more source

The mechanism of sulfidation roasting pretreatment of cerussite for enhanced flotation behavior

open access: yesChemical Engineering Journal Advances
Lead is an indispensable non-ferrous metal for industrial development. As primary galena(PbS) resources are being exhausted, the utilization of lead oxide ore resources have become increasingly important. Compared with the conventional lead oxide surface
Yu Miao   +6 more
doaj   +1 more source

Combinatorial synthesis of oxysulfides in the lanthanum-bismuth-copper system [PDF]

open access: yes, 2020
Establishing synthesis methods for a target material constitutes a grand challenge in materials research, which is compounded with use-inspired specifications on the format of the material.
Gregoire, John M.   +6 more
core  

Mineralogy of Sulfides [PDF]

open access: yesElements, 2017
Metal sulphides are the most important group of ore minerals. As shown in this brief introduction, much is known about their compositions, crystal structures, phase relations and paragenesis. Much less is known about their surface chemistry and, in particular, about their biogeochemistry, and about the formation and behaviour of ‘nanoparticle ...
Vaughan, D.J., Corkhill, C.L.
openaire   +3 more sources

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