Results 51 to 60 of about 1,478 (213)

Cobalt-substituted iron-based wolframite synthesized via polyol route for efficient oxygen evolution reaction

Electrochemistry Communications, 2020
Binary tungsten oxides with a wolframite crystal structure, such as FeWO4 and CoWO4, have poor electrocatalytic activity for the oxygen evolution reaction (OER).
Masaharu Nakayama, Airi Takeda, Heishi Maruyama, Vijay Kumbhar, Olivier Crosnier   +4 more
doaj   +1 more source

Enhanced microwave dielectric properties of wolframite structured Zn1-xCuxWO4 ceramics with low sintering temperature

Journal of Materiomics, 2021
The crystal structure, Raman vibration, chemical bond characteristics, and microwave dielectric properties of Zn1-xCuxWO4 (x = 0–0.15) ceramics prepared by a solid-state reaction were investigated by XRD refinement, Raman spectroscopy, P-V-L theory and ...
Qin Zhang, Xiaoli Tang, Fangyi Huang, Xiaohui Wu, Yuanxun Li, Hua Su   +5 more
doaj   +1 more source

Eine elektrokatalytische/heterogen‐katalytische Kaskade zur selektiven Herstellung von Propylenoxid durch anodische H2O2‐Erzeugung

Angewandte Chemie, Volume 138, Issue 6, 2 February 2026.
Diese Arbeit demonstriert eine Kaskadenstrategie für die selektive Synthese von Propylenoxid (PO) durch Kopplung der anodischen H2O2‐Erzeugung mit der TS‐1‐katalysierten Propylenepoxidierung. Durch die Immobilisierung von TS‐1 auf einer Gasdiffusionsschicht erreicht das System eine hohe PO‐Produktivität bei effizienter H2O2‐Nutzung und bietet damit ...
Shubhadeep Chandra, Anirudha Shekhawat, Adarsh Koul, Ridha Zerdoumi, Lejing Li, Wolfgang Schuhmann   +5 more
wiley   +1 more source

Wolframite : the post-fergusonite phase in YLiF4

, 2004
By means of electronic structure calculations, we have studied phase transitions in YLiF4 using the Vienna ab initio simulation package (VASP) within the generalized gradient approximation (GGA) and the local density approximation (LDA). The scheelite to
Li, S., Johansson, Börje,, Ahuja, R.
core   +1 more source

Multiple Generations of Wolframite Mineralization in the Echassieres District (Massif Central, France) [PDF]

, 2019
International audienceThe Echassières district in central France contains complex rare-element ore deposits, whose formation is related to exotic igneous events and several hydrothermal episodes that are not entirely understood to date.
Monnier, Loïs, Béziat, Didier, Stefano Salvi, Jérémie Melleton, Laurent Bailly, Sophie Gouy, de Parseval, Philippe, Didier Béziat, Philippe de Parseval, Salvi, Stefano, Gouy, Sophie, Melleton, Jérémie, Philippe Lach, Lach, Philippe, Bailly, Laurent, Loïs Monnier   +15 more
core   +1 more source

Geochemistry and U–Pb Zircon Geochronology of Granite at the Pilok Sn–W Deposit, Thailand: Implications for Late Triassic Tin Metallogenesis

Resource Geology, Volume 76, Issue 1, January/December 2026.
Zircon U–Pb dating constrains the Pilok Sn–W granite emplacement at 212–208 Ma, during the Late Triassic post‐collisional extension after the Sibumasu‐Indochina collision. This timing coincides with widespread tin‐bearing granite magmatism throughout Southeast Asia, marking a major regional metallogenic event. ABSTRACT The Pilok Sn–W deposit in western
Mallika Intachai, Ryohei Takahashi, Andrea Agangi, Marlina A. Elburg, Punya Charusiri, Pearlyn Manalo, Hinako Sato, Cendi D. P. Dana, Manuel Nopeia   +8 more
wiley   +1 more source

Cobalt Tungstate Characterization Using Matryoshka‐Structure Filter

Advanced Engineering Materials, Volume 27, Issue 23, December 2025.
The green synthesis of cobalt tungstate (CoWO4) using natural polymerizing agents from agar–agar and commercial produces environmentally friendly materials with tunable structural and electromagnetic properties. X‐ray diffraction and Rietveld refinement correlate crystal structure with microwave transmission losses in Matryoshka‐type filters.
Amanda Gomes Barboza, Camila da Silva Cavalcanti, Abid Raza, Marina de Oliveira Alencar, Evanimek Bernardo Sabino da Silva, Guilherme Nunes de Melo, Marcos Tavares de Melo   +6 more
wiley   +1 more source

Electric and thermoelectric properties of wolframite, (Fe, Mn) WO4, crystals. Caractéristiques électriques et thermoélectriques de cristaux de wolframite (Fe, Mn) WO4

, 1980
Electrical conductivity and thermoelectric power of a natural crystal of wolframite having the composition (0.614 Fe, 0.386 Mn)WO₄ have been studied from 90 K to 850 K.
Guha Thakurta, S. R., Dutta, A. K.
core   +1 more source

Band‐Engineered ZnWOs4@Ni‐BiOCl Z‐Scheme Heterojunction for Synergistic Visible Light‐Driven Photocatalytic Detoxification, Attenuation of Ecotoxicity, and Ultrasensitive Electrochemical Sensing of Tetracycline

Small Structures, Volume 6, Issue 12, December 2025.
A hierarchical ZnWO4@Ni‐BiOCl (ZW@Ni‐BOC) Z‐scheme heterostructure enables ultrasensitive electrochemical detection of tetracycline and rapid visible‐light photocatalytic degradation of tetracycline, Rhodamine B, and chlorpyrifos. HAADF‐STEM confirms intimate interfaces enhancing charge separation.
Prerna Attri, Moondeep Chauhan, Sonu Sarraf, Sahil Kapoor, Aviru Kumar Basu, Dong‐Kwon Lim, Preeti Garg, Sandeep Kumar, Ganga Ram Chaudhary   +8 more
wiley   +1 more source

Reception Ferrotungsten from Wolframite Concentrate by Alumimotermic Method

Eurasian Chemico-Technological Journal, 2011
For the smelting ferrotungsten of raw materials (mineral) took us to calculate the charge for each experiment. To optimize the process of obtaining ferrotungsten of wolframite carried out the following activities: to reduce speed and combustion ...
N. Yu. Golovchenko, O. S. Bairakova, G. I. Ksandopulo, S. Kh. Aknazarov   +3 more
doaj   +1 more source