نتایج جستجو برای: zirconium zr

تعداد نتایج: 15415  

2008
Maryke Steyn Andreas Roodt Gideon Steyl

In the title compound, [Zr(C(5)H(4)F(3)O(2))(4)]·C(7)H(8), the Zr atom is in a square-anti-prismatic coordination geometry that comprises four O,O'-bidentate trifluoro-acetyl-acetonate ligands. The O-Zr-O bite angles of the acetonate ligands range from 75.27 (5) to 75.41 (5)°. The Zr atom is located on a twofold rotation axis.

Journal: :Dalton transactions 2014
Peter E R Blanchard Samuel Liu Brendan J Kennedy Chris D Ling Zhaoming Zhang Maxim Avdeev Ling-Yun Jang Jyh-Fu Lee Chih-Wen Pao Jeng-Lung Chen

The structural properties of (Bi0.5Na0.5)Ti1-xZrxO3 (where 0 ≤ x ≤ 0.7) have been investigated using powder diffraction and X-ray absorption spectroscopy. Diffraction measurements on (Bi0.5Na0.5)TiO3 confirm that both monoclinic Cc and rhombohedral R3c phases are present at room temperature. Doping small amounts of Zr into the B site of (Bi0.5Na0.5)TiO3 initially stabilizes the rhombohedral pha...

2016
Samir Bensaid Marco Piumetti Chiara Novara Fabrizio Giorgis Angelica Chiodoni Nunzio Russo Debora Fino

In the present work, ceria, ceria-zirconia (Ce = 80 at.%, Zr = 20 at.%), ceria praseodymia (Ce = 80 at.%, Pr = 20 at.%) and ceria-zirconia-praseodymia catalysts (Ce = 80 at.%, Zr = 10 at.% and Pr = 10 at.%) have been prepared by the multi-inlet vortex reactor (MIVR). For each set of samples, two inlet flow rates have been used during the synthesis (namely, 2 ml min-1, and 20 ml min-1) in order ...

2015
Qadeer K. Panhwar Shahabuddin Memon

Received 25 August 2014, Revised 08 December 2014, Accepted 10 December 2014 -------------------------------------------------------------------------------------------------------------------------------------------Abstract Rutin, one of the excellent chelating agents, has been made to react with Zr and MoO4 ions to get metal complexes in methanol. The synthesis, spectral properties (UV-Vis, H...

2007
Torsten Beweries Vladimir V. Burlakov Marc A. Bach Stephan Peitz Perdita Arndt Wolfgang Baumann Anke Spannenberg Uwe Rosenthal Biswarup Pathak Eluvathingal D. Jemmis

The unusual reactivity of hafnocene complexes in comparison to their titanium and zirconium analogues was dramatically demonstrated in the recent functionalization of coordinated N2 and the coupling of CO2 and N2 to a substituted hydrazine product. The differences in their structure and bonding were also noticed; for example, the s and p ratio of the diene bonding in (s-cis-h-diene) metallocene...

Journal: :Microchemical Journal 2022

• A Zirconium labeled drug was visualized in tumors by Imaging Mass Spectrometry. Time of Flight Secondary Ion Spectrometry (ToF-SIMS) used parallel with immunohistochemistry. ToF-SIMS is a quick and sensitive technique to image zirconium labelled biologics. high-precision complement immunoPET using the same established radiotracers. The human epidermal growth factor receptor 2 (HER2) specific ...

2013
Alice F. Tarantal C. Chang I. Lee David L. Kukis Simon R. Cherry

These studies focused on a new radiolabeling technique with copper ((64)Cu) and zirconium ((89)Zr) for positron emission tomography (PET) imaging using a CD45 antibody. Synthesis of (64)Cu-CD45 and (89)Zr-CD45 immunoconjugates was performed and the evaluation of the potential toxicity of radiolabeling human peripheral blood stem cells (hPBSC) was assessed in vitro (viability, population doublin...

Journal: :Journal of Nuclear Materials 2022

This review considers current Zr alloys and opportunities for advanced zirconium to meet the demands of a structural material in fusion reactors. based materials breeder blanket offer potential increase tritium breeding ratio above that Fe, Si V materials. Current commercial might be considered as water-cooled designs, due similar operating temperature fission power plants. For blankets designe...

Journal: :Nano letters 2015
Dongwoo Lee Gi-dong Sim Kejie Zhao Joost J Vlassak

Reactive nanolaminates afford a promising route for the low-temperature synthesis of zirconium diboride, an ultrahigh-temperature ceramic with metallic properties. Although the addition of carbon is known to facilitate sintering of ZrB2, its effect on the kinetics of the formation reaction has not been elucidated. We have employed a combined approach of nanocalorimetry and first-principles theo...

2016
Z. Pan M. Puls M. P. Puls

Internal friction peaks PI, P2 and P3 were determined by the composite oscillator technique (APUCOT) at 40 and 120 lcHz in unalloyed Zr + H and in Zr-2.5Nb + H. The effect on the peaks of hydrogen content, thermal cycling and ageing was investigated. PI can be increased by misfit dislocations due to hydrides. The height of P2 is proportional to the total content of hydrogen while P3 depends on ...

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