Kinetics of the reaction between Mg2Ni and hydrogen

K. Nomura, Etsuo Akiba, S. Ono

研究成果: ジャーナルへの寄稿記事

67 引用 (Scopus)

抄録

The reaction between Mg2Ni and hydrogen was investigated by volumetric method. The reaction was divided into two stages; the initial stage was a very rapid reaction whose rate could not be measured, the later stage was the slower step whose rate was expressed by the equation dn/DT=K′(P-Peq/t where k′ is the constant, Peq and P are hydrogen pressures at equilibrium and at time t. The reaction rate of the later stage did not depend upon temperature, content of hydrogen in the alloy, and directions of the reaction, desorption and absorption. The amount of reacted hydrogen, Δn, in the initial stage was expressed by Δn=k(Po-Peq)(ns-no where P0 is the initial hydrogen pressure, ns is a constant around 4, n0 is a ratio of H to Mg2Ni at the initiation of the run, and k is a constant. The apparent activation energy of the reaction was nearly zero. It is considered that the reaction between the alloy and gaseous hydrogen takes place on metallic Mg2Ni in the initial stage and in the later stage reaction proceeds on the deactivated site.

元の言語英語
ページ(範囲)295-303
ページ数9
ジャーナルInternational Journal of Hydrogen Energy
6
発行部数3
DOI
出版物ステータス出版済み - 1 1 1981

Fingerprint

Hydrogen
Kinetics
kinetics
hydrogen
Reaction rates
reaction kinetics
Desorption
Activation energy
desorption
activation energy
Temperature
temperature

All Science Journal Classification (ASJC) codes

  • Renewable Energy, Sustainability and the Environment
  • Fuel Technology
  • Condensed Matter Physics
  • Energy Engineering and Power Technology

これを引用

Kinetics of the reaction between Mg2Ni and hydrogen. / Nomura, K.; Akiba, Etsuo; Ono, S.

:: International Journal of Hydrogen Energy, 巻 6, 番号 3, 01.01.1981, p. 295-303.

研究成果: ジャーナルへの寄稿記事

Nomura, K. ; Akiba, Etsuo ; Ono, S. / Kinetics of the reaction between Mg2Ni and hydrogen. :: International Journal of Hydrogen Energy. 1981 ; 巻 6, 番号 3. pp. 295-303.
@article{b7670e38dcdc4cec9eafc8dda737e208,
title = "Kinetics of the reaction between Mg2Ni and hydrogen",
abstract = "The reaction between Mg2Ni and hydrogen was investigated by volumetric method. The reaction was divided into two stages; the initial stage was a very rapid reaction whose rate could not be measured, the later stage was the slower step whose rate was expressed by the equation dn/DT=K′(P-Peq/t where k′ is the constant, Peq and P are hydrogen pressures at equilibrium and at time t. The reaction rate of the later stage did not depend upon temperature, content of hydrogen in the alloy, and directions of the reaction, desorption and absorption. The amount of reacted hydrogen, Δn, in the initial stage was expressed by Δn=k(Po-Peq)(ns-no where P0 is the initial hydrogen pressure, ns is a constant around 4, n0 is a ratio of H to Mg2Ni at the initiation of the run, and k is a constant. The apparent activation energy of the reaction was nearly zero. It is considered that the reaction between the alloy and gaseous hydrogen takes place on metallic Mg2Ni in the initial stage and in the later stage reaction proceeds on the deactivated site.",
author = "K. Nomura and Etsuo Akiba and S. Ono",
year = "1981",
month = "1",
day = "1",
doi = "10.1016/0360-3199(81)90047-1",
language = "English",
volume = "6",
pages = "295--303",
journal = "International Journal of Hydrogen Energy",
issn = "0360-3199",
publisher = "Elsevier Limited",
number = "3",

}

TY - JOUR

T1 - Kinetics of the reaction between Mg2Ni and hydrogen

AU - Nomura, K.

AU - Akiba, Etsuo

AU - Ono, S.

PY - 1981/1/1

Y1 - 1981/1/1

N2 - The reaction between Mg2Ni and hydrogen was investigated by volumetric method. The reaction was divided into two stages; the initial stage was a very rapid reaction whose rate could not be measured, the later stage was the slower step whose rate was expressed by the equation dn/DT=K′(P-Peq/t where k′ is the constant, Peq and P are hydrogen pressures at equilibrium and at time t. The reaction rate of the later stage did not depend upon temperature, content of hydrogen in the alloy, and directions of the reaction, desorption and absorption. The amount of reacted hydrogen, Δn, in the initial stage was expressed by Δn=k(Po-Peq)(ns-no where P0 is the initial hydrogen pressure, ns is a constant around 4, n0 is a ratio of H to Mg2Ni at the initiation of the run, and k is a constant. The apparent activation energy of the reaction was nearly zero. It is considered that the reaction between the alloy and gaseous hydrogen takes place on metallic Mg2Ni in the initial stage and in the later stage reaction proceeds on the deactivated site.

AB - The reaction between Mg2Ni and hydrogen was investigated by volumetric method. The reaction was divided into two stages; the initial stage was a very rapid reaction whose rate could not be measured, the later stage was the slower step whose rate was expressed by the equation dn/DT=K′(P-Peq/t where k′ is the constant, Peq and P are hydrogen pressures at equilibrium and at time t. The reaction rate of the later stage did not depend upon temperature, content of hydrogen in the alloy, and directions of the reaction, desorption and absorption. The amount of reacted hydrogen, Δn, in the initial stage was expressed by Δn=k(Po-Peq)(ns-no where P0 is the initial hydrogen pressure, ns is a constant around 4, n0 is a ratio of H to Mg2Ni at the initiation of the run, and k is a constant. The apparent activation energy of the reaction was nearly zero. It is considered that the reaction between the alloy and gaseous hydrogen takes place on metallic Mg2Ni in the initial stage and in the later stage reaction proceeds on the deactivated site.

UR - http://www.scopus.com/inward/record.url?scp=0019656355&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0019656355&partnerID=8YFLogxK

U2 - 10.1016/0360-3199(81)90047-1

DO - 10.1016/0360-3199(81)90047-1

M3 - Article

AN - SCOPUS:0019656355

VL - 6

SP - 295

EP - 303

JO - International Journal of Hydrogen Energy

JF - International Journal of Hydrogen Energy

SN - 0360-3199

IS - 3

ER -