Results 141 to 150 of about 72,590 (284)
An ‘Empty’ [Fe16] Cage and its Transformation into [Fe17] and [Fe30]
Small, EarlyView.Polymetallic clusters of FeIII constructed without organic bridging ligands are an emerging class of molecules with structures akin to iron oxide minerals, possessing large spin ground states and/or displaying spin frustration effects. All previous examples, [Fe8], [Fe17], [Fe30] and [Fe34], have been isolated from pyridine or analogous heterocyclic ...
Annabel J. MacGregor +12 more
wiley +1 more source
Small, EarlyView.Single‐frequency magnetic particle spectroscopy (MPS) and frequency‐mixing (FM‐)MPS exhibit complementary viscosity‐dependent signal responses of magnetic nanoparticles (MNP). MPS differentiates predominantly blood‐associated viscosities, whereas FM‐MPS shows pronounced discriminability in cellular and tissue‐like viscosity regimes (sensitivity windows)
Mohamad Bilal Abbas +5 more
wiley +1 more source
Smart Molecules, EarlyView.Smart mesoporous silica nanoparticles integrate tunable pore structures, molecular gates, targeting ligands, and stimuli‐responsive components to achieve controlled drug release for precision cancer therapy. This review highlights design principles, therapeutic applications, and future directions in immunotherapy, biodegradability, biosafety, and ...
Majdi Al‐Amili, Lei Lei, Zhu Jin
wiley +1 more source
The reduction of magnetite and lean magnetite sinters. [PDF]
The problems encountered in at tempt.ing to determine the rate controlling step in the reduction of magnetite end sinters to iron are revealed by a survey of the pertinent literature. On the basis of previous work supplemented by the investigations reported in this thesis the probable sequence of rate controlling steps has been determined.
openaire
Small Methods, EarlyView.In situ and operando XAS is used to probe nanoparticle formation during chemical vapor synthesis, where particles form in the gas phase under high‐temperature conditions. XANES reveals dynamic changes to the oxidation states while EXAFS indicates local structural variations under in situ probing conditions.
Shradha R. Joshi +2 more
wiley +1 more source
steel research international, EarlyView.This study investigates the reduction behavior of two international iron ores, including a synthetic hematite produced by oxidation of magnetite, in a novel fluidized‐bed kinetic reactor at elevated pressures. The reduction takes place at various temperatures (650°C, 700°C, and 750°C), and various hydrogen partial pressures (30, 55, and 80 vol% H2 ...
Valentina Nigitz +5 more
wiley +1 more source
steel research international, EarlyView.This study investigates how slag interacts with magnesia–carbon (MgO–C) refractories under conditions relevant to hydrogen plasma smelting reduction. High‐temperature refractory wear tests are combined with thermodynamic modeling to examine refractory dissolution into slag and slag infiltration into the refractory.
Eeli‐Matti Sassi +4 more
wiley +1 more source
Fundamental magnetic properties of Greigite (Fe3S4)
, 2009 Over the last twenty years, greigite (Fe3S4), an authigenic magnetic iron sulphide mineral, has been increasingly identified in sulphate-reducing marine and lacustrine sedimentary systems.
Chang, Liao
core +1 more source
steel research international, EarlyView.Commercial iron ore sinter is reduced isothermally under operation‐derived radial blast furnace gas atmospheres with and without 20 kg H2/tHM injection. Hydrogen improves reduction at 900–1100 °C, whereas at 700 °C the high H2O content limits the wüstite‐to‐iron driving force.
Ahmed Abdelrahim +5 more
wiley +1 more source
steel research international, EarlyView.At 800 °C, hematite pellets containing 0.9 wt% CaO reduce in hydrogen at rates 1.2–1.4 times those of pure pellets. The inward‐moving reaction front supports a topochemical description, and FeO‐to‐Fe kinetics are consistent with mixed control by interfacial reaction and intrapellet diffusion.
Jess Kuper, Ali Zakeri, Leili Tafaghodi
wiley +1 more source