Magnetic Circular X-Ray Dichroism at the Ce LII,IIIEdges in Ferromagnetic Iron Based Intei metallic

1997 ◽  
Vol 7 (C2) ◽  
pp. C2-439-C2-440
Author(s):  
O. Isnard ◽  
S. Miraglia ◽  
Ch. Giorgetti ◽  
F. Baudelet ◽  
E. Dartyge ◽  
...  
Keyword(s):  
X Ray ◽  
Iron Based ◽  
Ferromagnetic Iron

scholarly journals Local Magnetic States of the Weakly Ferromagnetic Iron-Based Superconductor Sr2VFeAsO3−δ Studied by X-ray Magnetic Circular Dichroism

2018 ◽  
Vol 87 (10) ◽  
pp. 105001 ◽  
Author(s):  
Masafumi Horio ◽  
Yukiharu Takeda ◽  
Hiromasa Namiki ◽  
Takao Katagiri ◽  
Yuki K. Wakabayashi ◽  
...  
Keyword(s):  
Circular Dichroism ◽  
Magnetic Circular Dichroism ◽  
X Ray ◽  
Iron Based ◽  
Ferromagnetic Iron ◽  
Magnetic States ◽  
Circular Dichroïsm

scholarly journals High Performance of Phenol Adsorption using Iron Based SBA-15 Synthesized by Loading-Microwave Method

2019 ◽  
Vol 35 (3) ◽  
pp. 1022-1028
Author(s):  
Yuvita Eka Pertiwi ◽  
Maria Ulfa
Keyword(s):  
Mesoporous Silica ◽  
Molecular Sieves ◽  
High Performance ◽  
Textural Properties ◽  
Hexagonal Structure ◽  
Kinetics Model ◽  
Element Analysis ◽  
Phenol Compounds ◽  
X Ray ◽  
Iron Based

The iron based mesoporous silica (Fe2O3/SBA-15) was studied for the first time for adsorption of phenol as a model adsorbate compound. The structural and textural properties of the synthesized samples were characterized by means of X-Ray Diffraction, Transmission Electron Microscopy, FTIR and element analysis techniques by Energy Dispersive X-Ray (EDX). The result of XRD analysis showed that mesoporous SBA-15 silica molecular sieves which modified with Fe2O3has a hexagonal structure with a pore size is 4.90 nm and iron contents (25.27%) were found on the surface of the Fe2O3/mesoporous silica SBA-15. While the FTIR analysis showed that Fe2O3/SBA-15 had functional group of assymetric Si-O-Si and Fe-O-Si which was found at 1085 cm-1 and 678 cm-1, respectively. Adsorption performance of Fe2O3/SBA-15 material investigated by phenol compounds as adsorbate model. The optimum contact time is 60 minutes and the Kinetics model of the mesoporous SBA-15 silica molecular sieves modified Fe2O3 can adsorb phenol compounds following the Kinetics Model Ho and McKay. The result optimum adsorption capacity occuring in the adsorption of phenol compounds by of the mesoporous SBA-15 silica molecular sieves modified Fe2O3 is 114.000 mg/g.

Microstructure and Mechanical Properties of Fe-Cu-Ni Sinters Prepared by Ball Milling and Hot Pressing

2020 ◽  
Vol 405 ◽  
pp. 379-384
Author(s):  
Joanna Borowiecka-Jamrozek ◽  
Jan Lachowski
Keyword(s):  
Mechanical Properties ◽  
Hot Pressing ◽  
High Hardness ◽  
X Ray Diffraction ◽  
X Ray ◽  
Powder Composition ◽  
Microstructure And Mechanical Properties ◽  
Static Tensile ◽  
Iron Based ◽  
Surface Observations

The main purpose of this work was to determine the effect of the powder composition on the microstructure and properties of iron-based sinters used as a matrix in diamond tools. The Fe-Cu-Ni sinters obtained from a mixture of ground powders were used for experiments. The influence of manufacturing process parameters on the microstructure and mechanical properties of sinters was investigated. Sintering was performed using hot-pressing technique in a graphite mould. The investigations of obtained sinters included: density, hardness, static tensile test, X-ray diffraction analysis, microstructure and fracture surface observations. The obtained results indicate that the produced sinters have good plasticity and relatively high hardness.

scholarly journals Electronic structure and soft-X-ray-induced photoreduction studies of iron-based magnetic polyoxometalates of type {(M)M5}12FeIII30 (M = MoVI, WVI)

2013 ◽  
Vol 42 (22) ◽  
pp. 7924 ◽  
Author(s):  
Karsten Kuepper ◽  
Christine Derks ◽  
Christian Taubitz ◽  
Manuel Prinz ◽  
Loïc Joly ◽  
...  
Keyword(s):  
Electronic Structure ◽  
X Ray ◽  
Iron Based

Engineering Iron-Based Nanoparticles Spatially Dispersed on Mesoporous Carbon and Its Catalytic Activity for the Direct Oxidization of Benzene to Phenol

NANO ◽  
2018 ◽  
Vol 13 (08) ◽  
pp. 1850094
Author(s):  
Qiang Sun ◽  
Long Liu ◽  
Yi-Ding Li ◽  
Zeng-Rong Wang ◽  
Xue Zhang
Keyword(s):  
Mesoporous Carbon ◽  
Molecular Diffusion ◽  
Carbon Matrix ◽  
Mesoporous Structure ◽  
X Ray Diffraction ◽  
Efficient Catalyst ◽  
X Ray ◽  
Transmission Electron ◽  
Benzene Hydroxylation ◽  
Iron Based

We report engineered iron-based nanoparticles supported on cagelike mesoporous carbon that leaves its most mesopores empty to retain an open pore network and are expected to be efficient catalyst with fast molecular diffusion/transportation. The nano-scale iron-based particle inlayed in mesoporous carbon catalyst was obtained via the introduction of N atoms as an anchor. Results of X-ray diffraction, N2 sorption and transmission electron microscopy showed that the cagelike mesoporous structure of the carbon matrix was retained during catalyst preparation and iron-based nanoparticles were spatially dispersed on the mesoporous carbon. Importantly, it was found that the obtained iron-based nanoparticles inlayed into mesoporous carbon with a low Fe loading of 1.26[Formula: see text]wt.% was an appropriate catalyst for the benzene hydroxylation to phenol using H2O2 as the oxidant. At a low temperature of 30∘C, 19.4% conversion to benzene and 14.6% phenol yield were obtained; in addition, the catalyst could be recycled at least four times.

EMR Spectra of Iron-Based Nanoparticles Produced by Dissimilatory Bacteria

2009 ◽  
Vol 152-153 ◽  
pp. 415-418 ◽  
Author(s):  
Yu.A. Koksharov ◽  
N.I. Chistyakova ◽  
D.G. Zavarzina ◽  
I.A. Treninkov ◽  
S.N. Polyakov ◽  
...  
Keyword(s):  
Iron Oxide ◽  
Magnetic Resonance ◽  
Iron Reduction ◽  
Oxide Nanoparticles ◽  
X Ray Diffraction ◽  
X Ray ◽  
Metabolic Products ◽  
Long Time ◽  
Partial Crystallization ◽  
Iron Based

We have studied electron magnetic resonance spectra of iron-oxide nanoparticles related to iron reduction metabolism of dissimilatory bacterium Thermincola ferriacetica. It is found that the resonance parameters of metabolic products change notably with time. The X-ray diffraction data indicates partial crystallization of iron oxide during long time storage under air open conditions.

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