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High-efficient esterification of rosin and glycerol catalyzed by novel rare earth Lewis acidic ionic liquid: Reaction development and mechanistic study
Rosin glyceride Rare earth Lewis acidic ionic liquid Esterification DFT Catalysis
2023/12/7
Background: As one of the most important modified products of rosin, rosin glyceride was widely used in many aspects. However, the preparation of rosin glyceride is always unfriendly due to the use of...
Appalachian Coal Ash Richest in Rare Earth Elements
Appalachian Coal Ash Rare Earth Elements
2016/6/12
A study of the content of rare earth elements in U.S. coal ashes shows that coal mined from the Appalachian Mountains could be the proverbial golden goose for hard-to-find materials critical to clean ...
The 8th International Conference on Rare Earth Development and Application
The 8th International Conference Rare Earth Development and Application
2015/4/17
Rare earth elements are the collection of seventeen chemical elements in the periodic table, namely scandium, yttrium and the lanthanide series. They are incorporated into many modern technological de...
Effect of Rare Earth Hypophosphite Salts on the Fire Performance of Biobased Polylactide Composites
Rare earth phosphate hypophosphorous acid cerium lanthanum hypophosphite synthesis polylactic acid flame retardant performance
2015/3/27
In this work, two kinds of rare earth hypophosphites (REHP), lanthanum hypophosphite (LaHP) and cerium hypophosphite (CeHP), were synthesized and characterized. Subsequently, LaHP and CeHP were added ...
Measurements of domain-wall energy density for amorphous rare earth-transition metal thin films
2011/12/9
The value of domain-wall energy density has been most often assumed to be proportional to,where exchange stiffness is usually calculated from the mean-field theroy.We report a simple method to derive ...
Control of parameters in rare earth- transition metal alloys for magneto-optical recording media
2011/12/1
The techniques which can be used to control the magnetic and occurs when the temperature in the heated spot increasesufficiently magneto-optical recording properties of sputtered amorphous thin films ...
Rare Earth Oxide-Treated Fullerene and Titania Composites with Enhanced Photocatalytic Activity for the Degradation of Methylene Blue（图）
fullerene yttrium titania visible light methylene blue
2013/10/12
Rare earth oxide-treated fullerene and titania composites (Y-fullerene/TiO2) were prepared by the sol-gel method. The products had interesting surface compositions. X-ray diffraction patterns of the c...
SPIE supports bill to ensure crucial rare-earth elements supply for optics and photonics innovation
Proposed legislation optics and photonics industry domestic rare-earth industry
2011/4/21
Proposed legislation aimed at securing a reliable supply of materials essential to the optics and photonics industry has received support from SPIE, the international society for optics and photonics....
Rare earth elements, Sr, Ba, Fe, and major cation concentrations in some living foraminiferal tests collected from Iriomote Island, Japan: An exploration for trace element behavior during biogenic calcium carbonate formation
foraminifera rare earth elements calcium carbonate partitioning biomineralization
2017/8/9
Rare earth elements (REE), Sr, Ba, Fe, Mg, Ca, Na, and K concentrations in three kinds of living foraminiferal tests collected from Iriomote Island, Japan were measured in order to obtain some qualita...
First Experimental Evidence of a ?ovel Multimode Pumping Scheme for an Array of Rare-earth Doped Waveguide Amplifiers and Lasers
ovel Multimode Pumping Scheme Rare-earth Doped Waveguide Amplifiers Lasers
2015/6/8
We propose a novel multimode pumping scheme for waveguide amplifier and laser arrays. Light from a broad area laser at 980 nm is coupled into a large passive waveguide and then effectively transferred...
Tailoring rare-earth emission spectra through controlled energy transfer
Optical Materials Fiber Materials Fluorescent Luminescent Materials Rare-Earth-Doped Materials
2015/6/8
Optical fiber preforms were solution doped with lanthanide-containing nanoparticles. The nanoparticles spatially localize the doping yielding multiply-dopedglasses that did not show energy transfer. T...
Influence of PbX2 (X = F, Cl, Br) content and thermal treatment on structure and optical properties of lead borate glasses doped with rare earth ions
lead borate glasses rare earth ions thermal treatment luminescence, up-conversion
2011/5/6
Oxyhalide lead borate glasses doped with rare earth ions have been studied before and after thermal
treatment. The rare earths as optically active ions were limited to the Er3+ ions. Near-infrared
l...
Solid Solubility Metastable Extension of Rare Earth Metals
Solid Solubility Rare Earth Metals
2009/7/29
Solid Solubility Metastable Extension of Rare Earth Metals.
Properties and Applications of Some Gold Alloys Modified by Rare Earth Additions
Gold Earth Additions
2009/7/28
The influence of rare earth (RE) additions on the
microstructure and some properties of gold and gold
alloys have been studied. RE additions can refine the
grain size of gold alloys, but show a ten...
Rare earth metals influence on morphology of non-metallic inclusions and mechanism of GP240GH and G17CrMo5-5cast steel cracking
Cast steel Rare earth metals Modification Non-metallic inclusions Fractography
2011/4/1
This paper presents results of research carried out in order to specify the influence of the rare earth metals on the morphology of the occuring non-metallic inclusions as well as on the cracking me...