Results 71 to 80 of about 339,446 (337)

Phosphate Removal by ZIF‐8 and Magnetic Fe3O4/ZIF‐8: A Comparative Study of Capacity, Kinetics, and Regeneration

open access: yesAsia-Pacific Journal of Chemical Engineering, EarlyView.
ABSTRACT This study presents a comparative evaluation of phosphate adsorption on pristine ZIF‐8 and Fe3O4‐doped ZIF‐8 (Fe3O4/ZIF‐8), a hybrid adsorbent combining high surface area with magnetic separability. Structural integrity and composition were confirmed using SEM, XRD, FTIR, and XPS.
Edward Hartman Ernest   +10 more
wiley   +1 more source

Identification of Astronomical Cycles in Upper Cretaceous Sifangtai Formation and Constraints on Depositional Age of Uranium Mineralized Sandstones in Qian’an Area of Songliao Basin

open access: yesYuanzineng kexue jishu
Cyclostratigraphy is widely applied in establishing high-precision sequence stratigraphic frameworks and astronomical time scales, making it an important field in the quantitative study of sedimentology.
WANG Junxian1, 2, ,  LI Ziying1, 2, ,  XING Zuochang1, 2,  LIU Jungang1, 2,  SHI Qingping1, 2,  TIAN Mingming1, 2,  JIA Licheng1, 2
doaj   +1 more source

Genesis of green sandstone/mudstone from Middle Jurassic Zhiluo Formation in the Dongsheng Uranium Orefield, Ordos Basin and its enlightenment for uranium mineralization

open access: yesChina Geology, 2020
: The middle Jurassic Zhiluo Formation in the Dongsheng is comprised of a big set of green sandstone/mudstone with most of uranium orebodies occurring in close proximity to its footwall. By synthesizing field observations, region analysis, data collected
Ruo-shi Jin   +11 more
doaj   +1 more source

Redox‐Dependent Luminescence in a Pentavalent Uranyl Complex

open access: yesChemistryEurope, EarlyView.
Redox‐dependent luminescence in a molecular pentavalent uranyl complex supported by a pyridine dipyrrolide pincer ligand is presented. Electrochemical and chemical reduction of the uranyl(VI) species provides a stable uranyl(V) complex that emits blue light from a high‐energy excited state. The anti‐Kasha emission is credited to the presence of “nested”
Leyla R. Valerio   +5 more
wiley   +1 more source

Construction of Thermal-driven Convective Mineralization Model and Exploration Indicators for Qianjiadian Sandstone Uranium Ore Field in Songliao Basin

open access: yesYuanzineng kexue jishu
Significant breakthroughs have been made in the exploration of sandstone uranium deposits in the Qianjiadian area of the Songliao basin. The widespread development of basic magma intrusions in the region, along with their increasing relevance to the ...
DING Bo1, 2, LIU Hongxu1, 2, HUANG Shaohua1, 2, LIU Chiheng1, 2, QIU Linfei1, 2, HE Feng1, 2
doaj   +1 more source

Origin and Role of Kaolinization in Roll-Front Uranium Deposits and Its Response to Ore-Forming Fluids in the Yili Basin, China

open access: yesGeofluids, 2018
Kaolinite is a common mineral found in most Chinese sandstone-hosted uranium deposits. It occurs particularly in coal-bearing clastic rocks in northwest China, such as the uranium deposits in the Yili Basin, which is well known for hosting several large ...
Z. Y. Liu   +7 more
doaj   +1 more source

Geotechnical Parameters for Explotation Hydrogenous Uranium Deposits in Mongolia [PDF]

open access: yes, 2014
The parameters of the opening for explotation hydrogenic uranium deposits in Mongolia and recommendations on the technology for their ...
Bat-Ochir, B   +3 more
core  

Interplay of defect cluster and the stability of xenon in uranium dioxide by density functional calculations

open access: yes, 2010
Self-defect clusters in bulk matrix might affect the thermodynamic behavior of fission gases in nuclear fuel such as uranium dioxide. With first-principles LSDA+U calculations and taking xenon as a prototype, we find that the influence of oxygen defect ...
Chen, Ying   +4 more
core   +1 more source

Exploration of the Interconversion of Uranium Anilido and Imido Species

open access: yesChemistryEurope, EarlyView.
Exploring the reactivity of the trivalent U(NHDIPP)5K2(THF)4 (1) leads to the formation of uranium imido complexes. Treating 1 with 18c6 causes spontaneous oxidation and the formation of [U(NDIPP)(NHDIPP)4][K(18c6)(THF)]2 (2). Oxidation of 1 or 2 results in the formation of U(NDIPP)2(NHDIPP)2 (3).
Kelly L. Gullett   +5 more
wiley   +1 more source

Review and Prospect of Uranium Hydrometallurgy in China

open access: yesHe huaxue yu fangshe huaxue
Uranium is an important strategic resource and energy mineral. With the rapid development of nuclear power, the demand for natural uranium has been increasing year by year.
Xue-bin SU   +10 more
doaj   +1 more source

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