Hydrogen, solid

Figure 1. Ideal pressure-composition isotherms showing the hydrogen solid-solution phase, a, and the hydride phase, j3. The plateau marks the region of coexistence of the a and fl phases. As the temperature is increased the plateau narrows and eventually disappears at some consolule temperature...

Potassium perrhenate (KRe04) is reduced by hydrogen in two stages. The first operation is carried out at 500 to 550 °C. The reduced product is washed to remove the hydroxide. The powder is then subjected to a second reduction at a higher temperature (900 to 1000 °C). The product is washed, first with dilute hydrochloric acid and then with water, and dried in vacuum or in a current of hydrogen. Solid rhenium is made by powder metallurgy techniques. 

In this cell, the following independent phases must be considered platinum, silver, gaseous hydrogen, solid silver chloride electrolyte, and an aqueous solution of hydrogen chloride. In order to be able to determine the EMF of the cell, the leads must be made of the same material and thus, to simplify matters, a platinum lead must be connected to the silver electrode. It will be seen in the conclusion to this section that the electromotive force of a cell does not depend on the material from which the leads are made, so that the whole derivation could be carried out with different, e.g. copper, leads. In addition to Cl- and H30+ ions (further written as H+), the solution also contains Ag+ ions in a small concentration corresponding to a saturated solution of silver chloride in hydrochloric acid. Thus, the following scheme of the phases can be written (the parentheses enclose the species present in the given phase) ... 

Fig. 4.1 a Typical time evolution of a given correlation function in a glass-forming system for different temperatures (T >T2>...>T ), b Molecular dynamics simulation results [105] for the time decay of different correlation functions in polyisoprene at 363 K normalized dynamic structure factor at the first static structure factor maximum solid thick line)y intermediate incoherent scattering function of the hydrogens solid thin line), dipole-dipole correlation function dashed line) and second order orientational correlation function of three different C-H bonds measurable by NMR dashed-dotted lines)... 

Fig. 2.3 (a) The visible-band EEL spectra of unexposed (dashed line) and hydrogenated (solid line) Cm films shown in Fig. 2.2, spectra labeled (a) and (d), compared with the extinction curve of the variable component (open circles) detailed in Webster (1997). (b) The far-UV to near-IR EEL spectrum of the hydrogenated Cm film (solid line) in Fig. 2.2 (d) compared to the mean interstellar extinction curve (open circles). The vertical scales of the EEL spectra and extinction curves in Fig. 2a and b are incommensurable, and the EEL spectra are arbitrarily scaled to give reasonable qualitative agreement for comparison... 

Irodova A.V. (1980) Directional order (k=0) in hydrogen solid solution based on Cubic (C15) Laves phases. (Preprint IAE-3308/9), Moscow, 16. 

FIGURE 13.1 Structure factors S(QZ) of the two samples with hydrogenous (solid line) and deuterated (dashed line) PEO. The structure factors are shown on three different scales in (a), (b) and (c) for clarity. 

Fig. 8.4. Comparison of the electron temperature measured in the plasma center by the X-ray spectrometer and the ECE diagnostics with hydrogen (solid points) and deuterium (open points) as working gas. The squares and triangles correspond to discharges with neutral beam injection [3]...

Fig. 11.13. Erosion yield Y(Ar+ H) due to simultaneous exposure to Ar+ ions and atomic hydrogen (solid squares) as a function of ion energy. The data are compared with a model according to (11.4) (solid line). For comparison, the dotted line denotes the total number of displaced carbon atoms per incident ion...

Figure 5.17 Calculated frequency shifts of OH stretches, involving the bridging hydrogen. Solid lines refer to anharmonic and broken to harmonic frequencies. The first molecule in the chain is designated 1, and the central molecule corresponds to that with largest frequency near center of chain" . ...

To suppose, with Troost and Hautefeuille, that the Bystem is composed of gaseous hydrogen, solid palladium, and hydride of... 

Figure 4. Aryl group interchange between molecules of (para-tolyl) diphenylphosphine.(Conditions 7 wt % (paratolyl)diphenylphosphine 1000 ppm Rh in toluene. 120°C 60 psia propylene hydrogen. Solid lines are the computed).

Crystalline materials used as oxidizer components of propellants and explosives decompose thermally to produce gaseous fragments which act as oxidizer fragments. On the other hand, hydrocarbon polymers used as fuel components such as polyurethane and polybutadiene decompose endothermically and generate hydrogen, solid carbon, and other hydrocarbon fragments which act as fuel fragments. The mixtures of the hydrocarbon polymers and the crystalline materials are ener-... 

McHugh, M. A., and T. J. Yogan. 1984. A study of three-phase solid-liquid-gas equilibria for three carbon dioxide-solid hydrocarbon systems, two ethane-hydrocarbon solid systems, and two ethylene-hydrogen solid systems. 7. Chem. Eng. Data 29 112. 

Schober, T., Vanadium-, niobium- and tantalum-Hydrogen, Solid State Phenomena, 1996, 49-50 p. 357 22. 

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