Results 61 to 70 of about 1,478 (213)

Linking Transition Metal Molybdate Formation to Polyoxometalate and Chloride Complex Speciation: An In Situ X‐Ray Total Scattering Study

ChemistryEurope, Volume 3, Issue 6, November 11, 2025.
GA: Hydrothermal formation pathways of metal molybdates (MMoO4; M = Fe, Co, Ni) are studied to pave the way for tailored oxide synthesis. Based on in situ X‐ray total scattering results, the pH dependency of emerging products is attributed to polyoxometalate chemistry and 3d metal complex speciation, while ruling out heteropolyoxometalate involvement ...
Laura S. Junkers, Susanne L. Skjærvø, Olivia Aalling‐Frederiksen, Caroline Tynell Hansen, Mikkel Juelsholt, Niels Lefeld, Rebecca K. Pittkowski, Nicolas P. L. Magnard, Andrea Kirsch, Kirsten M. Ø. Jensen   +9 more
wiley   +1 more source

High-pressure phase transitions and compressibility of wolframite-type tungstates [PDF]

, 2010
This paper reports an investigation on the phase diagram and compressibility of wolframite-type tungstates by means of x-ray powder diffraction and absorption in a diamond-anvil cell and ab initio calculations.
P. Rodríguez-Hernández, D. Errandonea, A. H. Romero, Rodríguez Hernández, P., Segura, A., González Gómez, Jesús Antonio, J. González, Muñoz, A., Lacomba Perales, R., Ruiz Fuertes, Javier, Errandonea, D., R. Lacomba-Perales, J. Ruiz-Fuertes, López Moreno, S., A. Muñoz, S. López-Moreno, J. Pellicer-Porres, Pellicer Porres, J., Romero, A.H., A. Segura   +19 more
core   +1 more source

The Reduction of Group 6–8 Transition Metal Oxides with Hydrogen—From Ore Smelting to Reaction Pathways#

European Journal of Inorganic Chemistry, Volume 28, Issue 30, October 22, 2025.
As the reduction of transition metal oxides by coal poses a significant climate risk, the use of alternative reducing agents such as hydrogen is becoming increasingly important. This review summarizes the current knowledge of the reduction pathways of transition metal oxides from groups 6 to 8.
Michael Häger, Simon Keilholz, Holger Kohlmann   +2 more
wiley   +1 more source

Turning on Selective H2S Gas Sensing Activity in Ternary Nickel Tungstate Strongly Correlated Electron System Through Sub‐Gap Band Manipulation

Advanced Functional Materials, Volume 35, Issue 32, August 8, 2025.
A strongly correlated electron system (SCES) exhibits pronounced insulating behavior due to Coulombic repulsion between cations, which generates a charge gap. This study investigates the tuning of the band structure in NiWO4‐based SCES via Cu doping at substitutional sites and Li doping at interstitial sites.
Seung Yong Lee, Ha Eun Choa, Seung Joon Choi, Chul Oh Park, Gi Hyun Park, June Won Suh, Si Hoon Jeong, Yunseong Ji, Changhyun Jin, Jeong Yun Hwang, Inseo Kim, Jihye Park, Joonho Bang, Myung Sik Choi, Hyo‐Jick Choi, Dong Won Chun, Kimoon Lee, Wooyoung Lee, Kyu Hyoung Lee   +18 more
wiley   +1 more source

Production of Ferro Alloys from Wolframite Concentrate Using Pressure

Eurasian Chemico-Technological Journal, 2011
The temperature of aluminotermic processes changes largely depending on appointment, structure and property of received products. Optimum conditions steal up for each concrete process. One of important practical questions is influence of temperature and
N. Yu. Golovchenko, O. S. Bayrakova, G. I. Ksandopulo, S. Kh. Aknazarov   +3 more
doaj   +1 more source

Mineralization at Different Structural Levels in the Crust

Acta Geologica Sinica - English Edition, Volume 99, Issue 4, Page 1042-1058, August 2025.
Abstract Metallogenic research on structural levels can reveal vertical patterns of mineralization and facilitate the deep exploration of economic minerals. However, research focusing on the correlation between structural levels and mineralization remains limited.
Saisai LI, Hongrui ZHANG, Zengqian HOU
wiley   +1 more source

Infrared microthermometry and chemistry of wolframite from the Baia Sprie epithermal deposit, Romania

, 2002
The chemical and microthermometric characteristics of wolframite crystals from the Baia Sprie Au-Ag-Pb-Zn-Cu-W ore deposit (Baia Mare district, Romania) have been investigated using electron probe microanalysis(EPMA), X-ray elemental mapping, and ...
Kouzmanov, Kalin, Bailly, Laurent, Grancea, Luminita   +2 more
core   +1 more source

G.O.Joe: A New Non‐Commercial Software Tool for the Processing of LA‐ICP‐MS Trace Element Data

Geostandards and Geoanalytical Research, Volume 49, Issue 2, Page 281-294, June 2025.
Key points G.O. Joe is developed to calculate trace element mass fractions including interference corrections. It is a freely accessible and platform‐independent web application to facilitate immediate data evaluation. Key feature is a simple, time‐efficient and flexible workflow to significantly improve data quality in various trace element studies ...
Florian Altenberger, Joachim Krause, Thomas Auer, Alexander Auer, Jasper Berndt   +4 more
wiley   +1 more source

Sintering with Sodium Carbonate and Leaching of Wolframite Cakes

Applied Sciences
Focuses on the processing of tungsten raw materials through various operations, including sintering, leaching, purification, and the production of technical tungstic acid.
Bolotpay Baimbetov, Yeleussiz Tazhiyev, Akmaral Yeleuliyeva, Gulnara Moldabayeva, Adelya Dauletbakova, Yelena Yakob, Akbota Taimassova   +6 more
doaj   +1 more source

Thioether‐bridged surfactants for interfacial hydrophobic regulation and enhanced mineral flotation recovery

AIChE Journal, Volume 71, Issue 5, May 2025.
Abstract Surfactant modification to improve interfacial hydrophobicity is widely employed in separation applications such as mineral recovery. However, few modifications effectively enhance both the inherent hydrophobicity of the surfactant and its surface‐anchoring capacity.
Qing Sun, Diling Yang, Jingsi Chen, Ziqian Zhao, Hao Zhang, Hong Zhong, Hongbo Zeng   +6 more
wiley   +1 more source