The H-Zr (hydrogen-zirconium) system. Bull. Alloy Phase Diagr. 11, 385 (1990).E.Zuzek and J.P. Abriata. The H-Zr(Hydrogen-Zirconium) System. Bulletin of Alloy Phase Diagrams, 11(4):385-395, 1990.E. Zuzek, J.P. Abriata, A. San-Martin, F.D. Manchester, The H-Zr (hydrogen...
Bulk properties of the Zr-H system were studied in the framework of the density functional theory. The local density approximation (LDA) is found to be insufficient for a proper description of interactions between Zr and H atoms and the generalized gradient approximation (GGA) is required. In ...
The presence of hydrogen atoms and their numbers have been established by 1H NMR spectroscopy. The compounds Zr6Cl14(PR3)4H4 (3a, R = Me; 3b, R = Et; 3c, R = n-Pr) and [HP(t-Bu)2Ph]3[Zr6Cl18H5] (4d) have been characterized by X-ray crystallography. In compounds 3a and ...
The small signals at 163 and 165 ppm originate from the DMF carboxyl group, undergoing J-splitting on the hydrogen atom. At a longer reaction time about 400 min, the broad signal at 171 ppm becomes visible, which is assigned to terephthalate in the MIL-53 structure42. During the ...
Theoretical or Mathematical/ enthalpy entropy equations of state free energy heat of formation hydrogen compounds hydrogen economy hydrogenation phase diagrams titanium compounds zirconium compounds/ Ti-H system Zr-H system thermodynamic properties thermodynamic optimisation Calphad-type assessment solution model ...
In summary, a continuous structural evolution mechanism is proposed according to the systematical characterization and analysis on the cyclic stabilizing behavior of Zr0.8Ti0.2Co alloy for hydrogen handling. It is observed that the stable capacity is contributed by homogeneous structural phase transformation...
ChemInform Abstract: ZIRCONIUM‐91 NMR SPECTRUM OF TETRAKIS(TETRAHYDROBORATO)ZIRCONIUM: THE ZIRCONIUM‐HYDROGEN COUPLING CONSTANT AS A PROBE FOR A FAST INT... ChemInform Abstract: ZIRCONIUM‐91 NMR SPECTRUM OF TETRAKIS(TETRAHYDROBORATO)ZIRCONIUM: THE ZIRCONIUM‐HYDROGEN COUPLING CONSTANT AS A PROBE FOR...
This invention provides an improved process for converting α,β-olefinically unsaturated aldehydic or ketonic compounds into the corresponding allylic alcohol using an alcohol as a hydrogen donor. This process is conducted in the presence of a supported tetragonal zirconium oxide catalyst or supported ...
. Additionally, as Fig.5shows, there is nearly no Zr left in the glass matrix already aftert = 1.75 h. Thus, betweent = 1.75 h andt = 24 h, the Zr is either present in already crystallized ZrO2, or in Zr-rich liquid-liquid phase separation droplets that ...
According to its high hydrogen capacity and low cost of production, magnesium hydride (MgH2) is a desired hydrogen storage system. Its slow hydrogenation/dehydrogenation kinetics and high thermal stability are the major barriers restricting its usage in real applications. Amongst the several methods ...