Performence of Fe-Mn Oxide Sorbent by Doping with Rare-Earth Oxides
نویسندگان
چکیده
منابع مشابه
Oxidative scavenging of cerium on hydrous Fe oxide: Evidence from the distribution of rare earth elements and yttrium between Fe oxides and Mn oxides in hydrogenetic ferromanganese crusts
The distribution of the rare earths and yttrium (REY) in co-existing hydrous Mn oxides and Fe oxides that form marine hydrogenetic ferromanganese crusts is used to better describe the partitioning and fractionation of the REY between these (hydr)oxides and seawater in the natural marine system. Four fractions (easily exchangeable, Mn-oxide-bound, Fe-oxidebound, and insoluble-residue-bound REY) ...
متن کاملTHE COMBINED INFLUENCE OF SiC AND RARE-EARTH OXIDES DOPING ON SUPERCONDUCTING PROPERTIES OF MgB2 WIRES
Ti-sheathed MgB2 wires doped with different amount of nanosized rare-earth oxide (Yb2O3, Gd2O3, and Dy2O3) and/or nanosized SiC were investigated. X-ray diffraction patterns suggested the existence of Mg2Si phase due to the SiC addition, while no any phase related to rare-earth oxide could be detected. Strong enhancement of in-field current carrying capability was observed on 2.5 wt.% Yb2O3 dop...
متن کاملLaser Spectroscopy of Rare Earth Oxides
Recent developments in the spectroscopy of the rare earth oxides using laser techniques are reviewed. A Ligand Field theoretical approach describing the electronic states is outlined along with the various experimental techniques that have been used as diagnostic tools to test various aspects of the theory. Results for several molecules are outlined. INTRODUCTION The emission and absorption spe...
متن کاملCharge and orbital ordering in Fe and Mn perovskite oxides far from half- doping by resonant x- ray scattering
The emergence of superlattice periodicities at metal to insulator transitions in hole doped perovskite oxides responds to a rearrangement of the local atomic structure, and electron and spin density distribution. Originally, the ionic model based on a checkerboardtype atomic distribution served to describe the low temperature charge and orbital ordered (COO) phases arising in halfdoped manganit...
متن کاملPhase Equilibria in Systems Involving the Rare - Earth Oxides . Part II . Solid State Reactions in Trivalent Rare - Earth Oxide Systems
Selected mixtures in 2 l binary and 9 ternary rare-earth oxide syste ms were studied by X-ray diffraction after heat treatment aL 1,650° C and above. Two graphs were drawn to show specific r egions of stability for t he various strucLure types. Each givcs t he a verage ionic rad ius of constiLuent cations versus the mole percent of the smaller cation. One diagram is es~e ntiall :-' divided inLo...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Energy Procedia
سال: 2012
ISSN: 1876-6102
DOI: 10.1016/j.egypro.2012.02.206