A high-temperature, high-pressure microbalance for the determination of the hydrogen sorption characteristics of metal hydrides

Lutz, Hans-Peter; Schmitt, Ralf; Steffens, F.

doi:10.1016/0040-6031(78)80025-2

Cited by 11 publications

(4 citation statements)

References 3 publications

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“…In the majority of studies dealing with the improvement of kinetic and thermodynamic characteristics of magnesium in the interaction with hydrogen, its alloys with other metals have been used. However, it should be noted that in the case of magnesium, the choice of these metals is rather limited for the enthalpy of mixing of magnesium with many elements of the Periodic 27 The hydride Mg 2 NiH 4 is regarded as a promising one for the accumulation of hydrogen, because it interacts with hydrogen at a high rate at temperatures of about 473 ± 573 K and P H2 90.5 ± 1.0 MPa, 28 although its hydrogen capacity is less than that of magnesium (see Table 1). At the first stage of hydrogenation of Mg 2 Ni under the conditions ensuring fast heat removal and at rather high hydrogen pressures, chemisorption of hydrogen on the surface of IMC with an effective activation energy of 14.0AE0.8 kJ mol 71 is the limiting stage.…”

Section: Magnesium Systems 1 Problems Arising In the Hydrogenation Of...mentioning

confidence: 99%

Interaction of alloys and intermetallic compounds obtained by mechanochemical methods with hydrogen

Konstanchuk¹,

Ivanov²,

Болдырев³

1998

Russ. Chem. Rev.

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Data on hydrogenation of mechanical alloys and intermetallic compounds formed in the course of mechanical alloying and mechanical milling are generalised. It is shown that mechanochemical methods make it possible to solve a number of problems arising in the hydrogenation of metals and alloys and to synthesise novel hydrides and nanocomposite materials. The mechanism of hydrogenation of mechanical alloys is discussed. The bibliography includes 98 references.

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Section: Magnesium Systems 1 Problems Arising In the Hydrogenation Of...mentioning

confidence: 99%

Interaction of alloys and intermetallic compounds obtained by mechanochemical methods with hydrogen

Konstanchuk¹,

Ivanov²,

Болдырев³

1998

Russ. Chem. Rev.

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“…Most commercial TG equipment, whether vertical or horizontal, can be adapted for corrosive gas work at ambient [17][18][19], and in some cases high pressures [8,10,[20][21][22], by using the inert purge principle in Fig. l(c).…”

Section: (B) Thermocouplesmentioning

confidence: 99%

“…TG [22] and DTA [7] in high pressure H2 have been used to study aspects of these reactions, such as phase diagrams (see section C), heats of reaction, kinetics of hydriding and dehydriding, capacity for 1-I2 storage, and the effects of repeated cycling. TG [22] and DTA [7] in high pressure H2 have been used to study aspects of these reactions, such as phase diagrams (see section C), heats of reaction, kinetics of hydriding and dehydriding, capacity for 1-I2 storage, and the effects of repeated cycling.…”

Section: Hydrogen and Carbon Monoxidementioning

confidence: 99%

Thermal analysis in reactive atmospheres

Gimzewski

1988

Journal of Thermal Analysis

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By using reactive atmospheres, the area of aplb]ication of thermal analysis is expanded considerably to cover many aspects of high temperature research into fuels, extractive metallurgy, materials and catalysts. This article reviews the design of apparatus and its application in kinetic and thermodynamic studies involving atmospheres such as H2, CO, N2, NH3, CO2, H20, SO2or3~ H2 S, $2. C12, HCI, F2 and HF at low or high pressures and as low pressure plasmas. Apart from gas-solid reactions, the important influence of a controlled product gas atmosphere on decomposition reactions is discussed also. Gas-solid adsorption and solubility studies are not included. John Wiley & Sons, Limited, ChichesterAkaddmiai Kiad6, Budapest GIMZEWSKI: ANALYSIS IN REACTIVE ATMOSPHERESTable I Areas of application of thermal analysis using reactive atmospheres ATMOSPHERE APPLICATIONS 02 H2, CO N2, NH3, NO2 C02 H20 802 or3 H2S 02, HCI etc F2, HF etc Plasmas Combustion, extractive metallurgy, oxidation stability tests, carbon analysis. Extractive metallurgy, coal hidrogenation, catalysts, materials science, hydrogen storage. Nitriding using N 2 or NH3, decomposition of catalysts, and propellants in NH3, extractive metallurgy using NO2.Exploitation and analysis of carbonate minerals, processing fuel gases, corrosion.Coal gasification, materials science, reversible dehydration reaction analysis of plaster.Cleaning combustion gases, extractive metallurgy.Cleaning fuel gases, corrosion.Extractive metallurgy, analysis of ceramics.Nuclear fuel processing. Materials science Experimental ApparatusThermal analysis has been performed in gases and vapours at low and high pressures and in low pressure plasmas. Plasmas and vapours pose specific problems discussed below, but otherwise the apparatus design is dictated by the corrosive nature of the atmosphere, its pressure and its flow arrangement. A flowing atmosphere is preferred at normal and high pressures to facilitate mass transfer but at low pressures the atmosphere is usually static. Below, corrosion problems are discussed for furnaces, thermocouples and thermobalances, and the difficulties in generating and using controlled atmospheres are considered separately for gases, vapours and plasmas.s ThermalAnal. 33, 1988

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“…THERMOGRAVIMETRY A vacuum microbalance, with infrared heating source, has been described (84) and applied to kinetic and capacity studies of Zr and A1 powders exposed to Ar containing 5 to 50 ppm H2, 02, H20, and C02. A microbalance for measurement of H2 sorption characteristics of metal hydrides was operable from 15 to 600 °C and from 10~5 Torr to 60 kbar (118). An ultrahigh vacuum ultramicrobalance system containing a quadrupole residual gas analyzer was designed to permit loading of up to 20-g samples from a controlled environment (193).…”

Section: Differential Thermal Analysis-dynamic Scanning Calorimetrymentioning

confidence: 99%

Thermal analysis

Murphy¹

1980

Anal. Chem.

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A high-temperature, high-pressure microbalance for the determination of the hydrogen sorption characteristics of metal hydrides

Cited by 11 publications

References 3 publications

Interaction of alloys and intermetallic compounds obtained by mechanochemical methods with hydrogen

Interaction of alloys and intermetallic compounds obtained by mechanochemical methods with hydrogen

Thermal analysis in reactive atmospheres

Thermal analysis

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