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Ultime pubblicazioni e brevetti sugli elementi delle terre rare

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Questa è la nostra ultima selezione di pubblicazioni e brevetti mondiali in inglese sugli elementi delle terre rare, tra numerose riviste scientifiche online, classificate e focalizzate su elementi delle terre rare, scandio, ittrio, lantanio, cerio, praseodimio, neodimio, promezio, samario, europio, gadolinio, terbio, disprosio, olmio, erbio, tulio, itterbio, lutezio, terre rare e terre rare.

Nitride semiconductor transistor and method of manufacturing nitride semiconductor transistor

Patent published on the 2026-05-21 in US under Ref US20260143733 by SUMITOMO ELECTRIC INDUSTRIES [JP] (Kawahara Takahiko [jp])

Abstract: A nitride semiconductor transistor includes a channel layer and a first barrier layer overlapping the channel layer, the first barrier layer containing a rare earth group III element, aluminum, and nitrogen. The first barrier layer includes a first region having a first oxygen concentration equal to or less than 20 at.%, and a second region having a second oxygen concentration greater than 20 at.%. The first region is located between the channel layer and the second region. A thickness of the fi[...]


Our summary: A nitride semiconductor transistor consists of a channel layer and a first barrier layer. The barrier layer contains a rare earth group III element, aluminum, and nitrogen. It has regions with varying oxygen concentrations, with specific thickness requirements.

Nitride semiconductor, transistor, barrier layer, oxygen concentration

Patent

Reaction-induced hierarchical fracturing for the recovery of hydrogen, energy, and minerals from geological environments

Patent published on the 2026-05-21 in WO under Ref WO2026107508 by GEOREDOX INC [US] (Hager Bradford H [us], Smit Theodericus [us], Stoner Robert J [us], Mcfarland Eric W [us], Varanasi Kripa [us])

Abstract: Presented herein are systems and methods for the production of hydrogen, geothermal energy (heat), amorphous silica, rare earth minerals, and/or other resource(s) from geological environments such as subsurface geologic (e.g., rock) formations. In certain embodiments, presented herein are systems and methods that employ controlled, chemically-induced hierarchical fracturing of rock to increase rock surface area and increase the production and recovery of geologic hydrogen from in-situ sites.[...]


Our summary: This content discusses systems and methods for producing hydrogen, geothermal energy, and minerals from geological environments. It focuses on controlled, chemically-induced hierarchical fracturing of rock to enhance surface area. The approach aims to improve the recovery of geologic hydrogen from subsurface formations.

hierarchical fracturing, hydrogen recovery, geothermal energy, mineral extraction

Patent

Highly dispersible radical scavenger having low leachability and reversible regenerability, and electrolyte membrane including same

Patent published on the 2026-05-21 in WO under Ref WO2026106161 by UNIV DANKOOK CHEONAN CAMPUS IND ACADEMIC COOPERATION FOUNDATION [KR] (Lee Chang Hyun [kr], Lee Si Chan [kr], Lee Hyuk Joo [kr])

Abstract: The present invention relates to a highly dispersible organic-inorganic hybrid nanoparticle radical scavenger having low leachability and reversible regenerability, and a highly durable electrolyte membrane including same. The highly dispersible organic-inorganic hybrid nanoparticle radical scavenger includes nanoparticles in which oxides of cerium (Ce) and silicon (Si) and oxides of at least one metal (M) selected from transition metals and lanthanides are bonded, wherein the nanoparticles have[...]


Our summary: The invention presents a highly dispersible organic-inorganic hybrid nanoparticle radical scavenger with low leachability and reversible regenerability. This scavenger is integrated into a durable electrolyte membrane. The nanoparticles consist of cerium and silicon oxides bonded with transition or lanthanide metal oxides, featuring functional groups like alkyl or fluoroalkyl.

radical scavenger, electrolyte membrane, organic-inorganic hybrid, low leachability

Patent

Protective sulfur removal system for enhanced methane slip catalysts in sulfur-containing exhaust

Patent published on the 2026-05-21 in US under Ref US20260138084 by CDTI ADVANCED MAT INC [US] (Michl Jason C [us], Hermann Blake [us], Lee Edward J [us], Mcconnell Campbell [us], Liu Ru-fen [us])

Abstract: [0000] A sulfur trap system is provided for protecting methane oxidation catalysts (MOC) from sulfur poisoning in sulfur-containing exhaust. The trap is positioned upstream of the MOC and includes a washcoat comprising zeolite, cerium-based oxygen-storage material, and alumina, and an overcoat containing copper, manganese, and cerium oxides. The mixed metal oxide and support formulation delivers high sulfur adsorption at engine exhaust temperatures, reducing sulfur to safe levels and extending t[...]


Our summary: A sulfur trap system protects methane oxidation catalysts from sulfur poisoning. It includes a washcoat with zeolite and cerium-based materials, and an overcoat with mixed metal oxides. This system enhances sulfur adsorption, prolongs catalyst life, and improves methane conversion efficiency.

sulfur removal, methane oxidation catalysts, zeolite, exhaust treatment

Patent

Electrolysis cell and electrolysis device

Patent published on the 2026-05-14 in AU under Ref AU2026203126 by KK TOSHIBA (Yonetsu Maki, Kiyota Yasuhiro, Kofuji Yusuke, Kitagawa Ryota, Mikoshiba Satoshi)

Abstract: An electrolysis cell comprising: a cathode configured to be in contact with a reducible gas and to reduce the reducible gas, the reducible gas including carbon dioxide or nitrogen; an anode configured to be in contact with an electrolytic solution containing an oxidizable substance and to oxidize the oxidizable substance, the anode containing titanium, and the 5 oxidizable substance including water or a hydroxide ion; and a separator separating the cathode from the anode, wherein: the separator [...]


Our summary: The electrolysis cell features a cathode that reduces a reducible gas and an anode that oxidizes an oxidizable substance. A porous membrane serves as a separator, ensuring proper electrolyte flow and sealing. The anode includes titanium and a porous substrate with various selectable elements for enhanced performance.

Electrolysis cell, cathode, anode, porous membrane

Patent

Process for the recovery of ree and pgm from secondary sources

Patent published on the 2026-05-14 in AU under Ref AU2025312117B by UMICORE (Heulens Jeroen, Bogaerts Caroline)

Abstract: The present invention is in the field of metal recycling and concerns a process for the recovery of rare earth elements (REE) and platinum group metals (PGM). The process comprises the steps of preparing a metallurgical charge, comprising PGM-5 bearing catalysts, REE-bearing swarf and fluxing agents; feeding the metallurgical charge to a smelting furnace operating in reducing conditions; smelting the metallurgical charge, thereby obtaining a liquid Fe-bullion containing the majority of the PGM, [...]


Our summary: The process recovers rare earth elements and platinum group metals from secondary sources. It involves preparing a metallurgical charge and smelting it in a reducing environment. The method achieves simultaneous recovery of PGM and REE in one operation.

metal recycling, rare earth elements, platinum group metals, smelting process

Patent

Optical investigation of ultra-slow spin relaxation in 171Yb3+:Y2SiO5 single crystals

Published on 2026-03-10 by F Chiossi, A Tiranov, L Nicolas, D Serrano, F Montjovet-Basset, E Lafitte-Houssat, A Ferrier, S Welinski, L Morvan, P Berger, A Tallaire, M Afzelius and P Goldner @IOP SCIENCE

Abstract: We report a detailed investigation of spin relaxation dynamics in the rare-earth-doped crystal 171Yb:Y2SiO5, a promising platform for quantum memory based on atomic frequency combs. The population dynamics among the four ground-state hyperfine levels were studied in the 50 mK–6 K temperature range by optically modifying the spin populations and monitoring their return to thermal equilibrium via absorption spectroscopy. Below 1 K, population rethermalization occurs on timescales of several ho[...]


Our summary: The study investigates spin relaxation dynamics in 171Yb:Y2SiO5 single crystals for quantum memory applications. It reveals that population rethermalization occurs over hours below 1 K, influenced by spin-phonon interactions. The findings suggest optimal doping and temperature conditions for achieving long atomic frequency comb lifetimes.

spin relaxation, quantum memory, absorption spectroscopy, rare-earth-doped crystals

Publication

Methodologies, Challenges, and the Integration of Machine Learning (ML)

Published on 2026-02-03 by Rehan Ullah, Jason Daza, Asma Wederni, Lluisa Escoda, Joan Saurina, Joan-Josep Suol @MDPI

Abstract: The increasing demand and production of neodymium-iron-boron-based permanent magnets (NdFeB-PMs) for the electronics, energy sector, and automobile industries led to disposal consequences. The NdFeB-PMs contain a substantial amount of rare earth elements (REEs). Although China is the largest exporter of REEs to the world, it has applied some restrictive policies in terms of supply chain and taxes. To address such issues, this review systematically examines current recycling techniques, including[...]


Our summary: This review analyzes recycling techniques for neodymium-iron-boron permanent magnets and their environmental impact. It discusses the integration of Machine Learning to enhance leaching processes and addresses challenges in large-scale implementation. The findings highlight the need for technological innovation and policy initiatives to achieve sustainable recycling solutions.

Recycling, Machine Learning, Neodymium-Iron-Boron, Rare Earth Elements

Publication

Argomenti trattati: Elementi di terre rare, rivestimento di barriera termica, microstruttura, proprietà meccaniche, sintesi per combustione in soluzione, durezza Vickers, resistenza alla frattura, espansione termica, effetto Hall, drogato, perovskite, resistenza alla corrosione, test di ciclo termico, affinamento dei grani, prestazioni ad alta temperatura, densità dei portatori di carica, proprietà di trasporto, Organizzazione internazionale per la standardizzazione (ISO), ASTM International, American National Standards Institute (ANSI), Commissione elettrotecnica internazionale (IEC) e Organizzazione internazionale per gli standard (ISO).

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