Abstract
A simple modification was made to the reaction vessel designed by Shaw (1963) in order to use it as a hydrogen sensor instead of a hydrogen source, thereby allowing a continuous record of \(f_{H_2 } \) to be made during an experiment. The advantage of this arrangement is that (reversed) \(f_{O_2 - } T\) curves for minerals can be generated from a single experimental run. Other applications are possible.
This method was successfully used in the determination of the Ni-NiO-H2O equilibrium between 580 ° and 830 °C at 2 kbar fluid pressure. The corrected 1 atm values are in agreement with electrochemical measurements. An Ag70Pd30 hydrogen permeable membrane was used for the experiment and flow rates of hydrogen through the membrane were calculated by monitoring the rate of increase or decrease in pressure with an induction pressure transducer. These flow rates range up to two times greater than those calculated for a pure platinum membrane.
Similar content being viewed by others
References
Alefeld, G., Volkl, J. (eds.): Topics in applied physics. Hydrogen in metals. 1. Basic properties. Vol. 28, 426p. Berlin, Heidelberg, New York: Springer 1978
Barrer, R.M.: Diffusion in and through solids. 464 p. Cambridge: Cambridge University Press 1951
Burnham, C.W., Holloway, J.R., Davis, N.F.: Thermodynamic properties of water to 1,000 ° C and 10,000 bars. Geol. Soc. Am. Spec. Paper 132, 96p (1969)
Chou, I.M.: Calibration of oxygen buffers at elevated P and T using the hydrogen fugacity sensor. Am. Mineral. 63, 690–703 (1978)
Chou, I.M., Eugster, H.P.: A sensor for hydrogen fugacities at elevated P and T and applications. EOS Trans. Am. Geophys. Union 57, 340 (1976)
Chou, I.M., Eugster, H.P., Berens, P., Weare, J.H.: Diffusion of hydrogen through platinum membranes at high pressures and temperatures. Geochim. Cosmochim. Acta 42, 281–288 (1978)
Chou, I.M., Williams, R.J.: Activity of H2O in CO2-H2O at 600 ° C and pressure to 8 kbars. Geol. Soc. Am. Abstr. Progr. 9, 928 (1977)
Ebisuzaki, Y., Kass, W.J., O'Keeffe, M.: Solubility and diffusion of hydrogen and deuterium in platinum. J. Chem. Phys. 49, 3329–3332 (1968)
Eugster, H.P.: Heterogeneous reactions involving oxidation and reduction at high temperatures and pressures. J. Chem. Phys. 26, 1760–1761 (1957)
Eugster, H.P.: Compositions and thermodynamics of metamorphic solutions. In: Thermodynamics in geology (D.G. Fraser, ed.), pp. 183–202. Dordrecht: Reidel 1977
Frantz, J.D., Ferry, J.M., Popp, R.K., Hewitt, D.A.: Redesign of the Shaw apparatus for controlled hydrogen fugacity during hydrothermal experimentation. Carnegie Inst. Washington Yearb. 76, 660–662 (1977)
Hewitt, D.A.: Hydrogen fugacities in Shaw bomb experiments. Contrib. Mineral. Petrol. 65, 165–169 (1977)
Hewitt, D.A.: A redetermination of the fayalite-magnetite-quartz equilibrium between 650 and 850 ° C. Am. J. Sci. 278, 715–724 (1978)
Huebner, J.S.: Buffering techniques for hydrostatic systems at elevated pressures. In: Research techniques for high pressure and high temperature. (G.C. Ulmer, ed.) pp. 123–178. Berlin, Heidelberg, New York: Springer 1971
Huebner, J.S., Sato, M.: The oxygen fugacity-temperature relationship of manganese oxide and nickel oxide buffers. Am. Mineral. 55, 934–952 (1970)
JANAF, Thermochemical Tables: 2nd edn. US Department Commerce (D.R. Stull and H. Prophet, Project Directors) NSRDSNBS 37 (1971)
Lewis, F.A.: The palladium hydrogen system. 178p. New York: Academic Press 1967
Richardson, O.W., Nicol. J., Parnell, T.: The diffusion of hydrogen through hot platinum. Philos. Mag. (6th ser) 8, 1–29 (1904)
Robie, R.A., Hemingway, B.S., Fisher. J.R.: Thermodynamic Properties of minerals and related substances at 298.15 ° K and 1 bar pressure and at higher temperatures. US Geol. Surv. Bull. 1452, 456 p. (1978)
Rubin, L.R.: Permeation of deuterium and hydrogen through palladium and 75 palladium-25 silver at elevated temperatures and pressures. Engelhard Ind. Tech. Bull. 7, 55–62 (1966)
Sato, M.: Intrinsic oxygen fugacities of iron-bearing oxide and silicate minerals under low total pressure. Geol. Soc. Am. Mem. 135, 289–307 (1972)
Shaw, H.R.: Hydrogen-water vapour mixtures: control of hydrothermal experiments by hydrogen osmosis. Science 139, 1220–1222 (1963)
Shaw, H.R.: Hydrogen osmosis in hydrothermal experiments. In: Researches in geochemistry (P.H. Abelson, ed.) Vol. 2, pp. 521–541. New York: John Wiley 1967
Shaw, H.R., Wones, D.R.: Fugacity coefficents for hydrogen gas between 0 and 1000 ° C, for pressures up to 3,000 atm. Am. J. Sci. 262, 918–929 (1964)
Wood, J.R., Chou, I.M., Gunter, W.D., Eugster, H.P.: Measurement of H2O activity in supercrital brines; theory and experimental results for the systems NaCl-H2O and KCl-H2O. Geochim. Cosmochim. Acta (in press, 1979)
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Gunter, W.D., Myers, J. & Wood, J.R. The Shaw bomb, an ideal hydrogen sensor. Contr. Mineral. and Petrol. 70, 23–27 (1979). https://doi.org/10.1007/BF00371868
Received:
Accepted:
Issue Date:
DOI: https://doi.org/10.1007/BF00371868