Showing papers in "Journal of Rare Earths in 2017"

TL;DR: In this article, a simple and practical ultrasonically synthetic strategy for the preparation of rare-earth based catalyst, nanostructured NiFe 2 − x Eu x O 4 was developed.

TL;DR: In this article, the authors reviewed the cracking and leaching methods applied to rare earth elements (REE) concentrates to produce an intermediate product for further REE separation, which would be accomplished through various techniques such as alkaline cracking and acid baking.

TL;DR: In this article, the authors used the law of approach to saturation (LoA) to calculate the maximum value of saturation for Ce-doped Cu nanocrystalline ferrites.

TL;DR: In this paper, a review was carried out to show the effects of rare earth elements on the structure, activity, and stability of fluid catalytic cracking (FCC) catalysts.

TL;DR: In this article, the authors reviewed various systems such as neutral phosphorus and acid phosphorus, carboxylic acid and amine extractant for solvent extraction chemistry of yttrium.

TL;DR: In this article, a hydrometallurgical method was studied that could be adjusted to recover not only rare earth metals (REM), but also other valuable metals (e.g. Co, Ni and Cu) that co-existed in the magnet.

TL;DR: A series of CeO2-Co3O4 mixed oxide catalysts with different Co/(Co+Ce) atomic ratios were synthesized by citric acid sol-gel method and used for catalytic oxidation of formaldehyde (HCHO) as mentioned in this paper.

TL;DR: In this article, Lanthanide-ion imprinted polymers (L-IIPs) were synthesized by stoichiometric amounts of rare earth ions and the cavities in the polymers were created for the corresponding lanthanide ions.

TL;DR: In this article, the authors synthesize particles of titanium oxide and cerium oxide supported on carbon, which were obtained through the pyrolysis of orange peel, and characterized using scanning electron microscopy, X-ray diffraction, infrared spectroscopy, and the specific surface area from Brunauer-Emmett-Teller method.

TL;DR: In this article, mesoporous cerium oxide was successfully assembled on the surface of Fe 3 O 4 @SiO 2 nanoparticles, and the synthesized adsorbent possessed a typical core-shell structure with a BET surface area of 195 m 2 /g, accessible mesopores of 2.6 nm, and saturation magnetization of 21.11 emu/g.

TL;DR: Tb 3+ /Eu 3+ co-doped transparent glass ceramics containing CaF 2 nanocrystals were successfully synthesized by high temperature melt-quenching method and subsequent heating as mentioned in this paper.

TL;DR: In this paper, a novel α-aminophosphonate extractant (Cextrant 230) was synthesized for the extraction and recovery of cerium and thorium from sulphate medium.

TL;DR: In this paper, a process to recover rare earth (RE) metals from spent fluid catalytic cracking (FCC) catalysts by solvent extraction was studied, using saponified 2-ethylhexyl phosphoric acid-2-ethyl hexyl ester (EHEHPA or P507).

TL;DR: YBO 3 :2 at.% Eu 3+ was prepared by the solid state reaction and its temperature dependent luminescence was investigated for possible applications in temperature sensing in this paper.

TL;DR: In this paper, the performance of copper-ceria sheets catalysts with different loadings of copper (2, 5 and 10 wt.%) supported on ceria nanosheets were synthesized via a deposition-precipitation (DP) method.

TL;DR: In this article, the effect of pH and lactic acid concentration on rare earth elements (REEs) extraction has been examined in an HCl medium with Cyanex 272 in the presence of the complexing agent Lactic acid (HLac) and auxiliary agents citric acid (H3Cit), acetic acid (HAc), and Titriplex III.

TL;DR: In this article, a series of CeO2 supports with different contents of active oxygen were obtained by adding surfactant at different synthesis steps, and they were characterized by N2 adsorption, X-ray diffraction (XRD), high resolution transmission electron microscopy (HRTEM), H2 temperature-programmed reduction (H2-TPR), dynamic oxygen storage capacity (DOSC), and in-situ DRIFTS technologies.

TL;DR: In this article, the activation of organic acids on the leaching process of ion-adsorption type rare earth ore (IRE-ore) was examined in the absence and presence of carboxylic acids, and all the tested organic acids (acetic acid, malonic acid, citric acid, tartaric acid, succinic acid, and malic acid) can promote rare earth extraction.

TL;DR: In this paper, the effects of rare earth refiners on the solidification structure and the mechanical property of ferritic stainless steel were investigated, and the corresponding mechanisms were also discussed.

TL;DR: In this article, a warm-white emitting persistent luminescence phosphor Lu 3 Al 2 Ga 3 O 12 :Pr 3+ was synthesized by solid state method at 1600 °C in air.

TL;DR: In this article, the eutectic properties of the Al-rich Al-RE (La, Ce, Pr, Nd) binary alloys with controversial compositions were investigated.

TL;DR: In this article, a series of Sm 3+ doped Y 2 MoO 6 were prepared through high temperature solid state reaction technique and their phase structures, morphologies and luminescence properties were investigated by X-ray diffraction (XRD), scanning electron microscopy (SEM) and photoluminescence spectrometry.

TL;DR: In this paper, a hybrid supercapacitor power cell was prepared by using 3D porous graphene decorated with Co 3 O 4 -CeO 2 nano-particles by using flower stem as biotemplate.

TL;DR: In this article, the effectiveness of V2O5-WO3/TiO2 catalysts modified with different CeO2 contents by impregnation and co-precipitation methods on the selective catalytic reduction of NOx by NH3 have been studied comparatively by various experimental techniques.

TL;DR: In this article, the effect of Ce doping content on structure and electrochemical properties of LiNi0.5Mn1.5O4 cathode material was systematically investigated, and the results showed that Ce doping did not change the cubic spinel structure with Fd3m space group, but effectively restrained the formation of LixNi1-xO impurity phase.

TL;DR: In this paper, the authors investigated the recovery of rare earth elements (REEs) and aluminum (Al) from the waste slag discharged by FCC catalyst factory (FCC) via acid leaching and selective precipitation.

TL;DR: In this paper, the effects of (Pr+Ce) addition on the Al-7Si-0.7Mg alloy were investigated by optical microscope (OM), energy diffraction spectrum (EDS), X-ray diffraction (XRD) and tensile tests.

TL;DR: In this paper, the sol-gel method was used to prepare the nanocrystalline Gd1-xCaxFeO3 (x=0-0.4) powders.

TL;DR: In this article, the chemical bonding characteristics of rare earth (RE) elements are studied by a quantitative analysis of electron domain of an atom, and the coordination number ranging from 2 to 16 can be determined.

TL;DR: In this article, a series of tunable phosphors NaAlSiO4:Ce3+,Sm3+ were synthesized using a conventional high-temperature, solid-state method.