Research Paper | Chemistry | Morocco | Volume 3 Issue 7, July 2014
Mechanism and Kinetics of Hydrogen Diffusion in Some Zr(Cr1-x Fex)2 Laves phase
M. Boulghallat, A. Jouaiti, L. Lallam
A series of Zr (Cr1-x Fex) 2 alloys with x= 0.4, 0.6 and 0.75 were prepared the major phase in these alloys had C14 Laves phase type structure. Experiments were carried out in a microbalance with a high sensibility (2.10-6 g) at different supply pressures (0.05 to 1MPa) and absorption temperatures ( 20 to 70C) in a close system. The microthermogravimetry method was applied to interpret the experimental data and to compare with each other approach and its possibility were discussed. The maximum hydrogen storage capacity of these compounds varies between 2.5 to 2.85 (H/formula). Absorption-desorption kinetics of the hydrides was realized on a sample mass equal to 50mg in the aim to minimize the heat gradient. After activation period the kinetics were found to be fast and vary linearly with the pressure values. The reactions rate are controlled by nucleation and growth in the formation and by three-dimensional diffusion outside the grains in the decomposition. Activation energy values in the above-mentioned alloys were found respectively equal: Ea 44.3, 50.2 and 54.5KJ/mol.H2
Keywords: Laves phases, hydriding, dehydriding, activation, kinetic, mechanism, nucleation
Edition: Volume 3 Issue 7, July 2014
Pages: 1470 - 1474
How to Cite this Article?
M. Boulghallat, A. Jouaiti, L. Lallam, "Mechanism and Kinetics of Hydrogen Diffusion in Some Zr(Cr1-x Fex)2 Laves phase ", International Journal of Science and Research (IJSR), https://www.ijsr.net/search_index_results_paperid.php?id=20141261, Volume 3 Issue 7, July 2014, 1470 - 1474
107 PDF Views | 82 PDF Downloads
Similar Articles with Keyword 'Laves phases'
Research Paper, Chemistry, Morocco, Volume 3 Issue 6, June 2014
Pages: 2157 - 2161Structure and Thermodynamic of Zr(Cr1-x Fex)2 Alloys Under Hydrogen Pressure
M.Boulghallat, A. Jouaiti, L.Lallaam, A. Barroug, D. Dafir
Research Paper, Chemistry, Morocco, Volume 3 Issue 7, July 2014
Pages: 1470 - 1474Mechanism and Kinetics of Hydrogen Diffusion in Some Zr(Cr1-x Fex)2 Laves phase
M. Boulghallat, A. Jouaiti, L. Lallam
Similar Articles with Keyword 'hydriding'
Research Paper, Chemistry, Morocco, Volume 3 Issue 7, July 2014
Pages: 1470 - 1474Mechanism and Kinetics of Hydrogen Diffusion in Some Zr(Cr1-x Fex)2 Laves phase
M. Boulghallat, A. Jouaiti, L. Lallam
Research Paper, Chemistry, Morocco, Volume 4 Issue 1, January 2015
Pages: 463 - 468Application of Theoretical Models to the Kinetic Study of the TiFe0,5Co0,5 ? H2 System
M. Boulghallat, A. Jouaiti, L. Lallam
Similar Articles with Keyword 'activation'
Research Paper, Chemistry, India, Volume 3 Issue 6, June 2014
Pages: 2047 - 2050Removal of Lead from Aqueous Solution Using Black Liquor - A Pulp Mill Waste
Anuja Agarwal, Babita Kapil
Research Paper, Chemistry, India, Volume 4 Issue 2, February 2015
Pages: 2040 - 2044Kinetics and Equilibrium Studies on the Removal of Direct Blue Dye Using Activated Carbon from Phyllanthus Reticulatus (Black Honey)
G. Kavitha, V. Venkateswaran
Research Paper, Chemistry, India, Volume 3 Issue 10, October 2014
Pages: 797 - 801Rapid Kinetics of Chlorination of Regioisomers of Nitrophenol by Molecular Chlorine in Aqueous Medium Using Rotating Platinum Electrode (RPE)
S. L. Bonde, R. P. Bhadane, V. T. Dangat, T. M. Sukul
Research Paper, Chemistry, India, Volume 3 Issue 5, May 2014
Pages: 1865 - 1867Study of Various Factors on Oxidation of p-Nitro Benzoic Acid Hydrazide - A Kinetic and Mechanistic Approach
A. S. Varale, Y. S. Varale
Research Paper, Chemistry, Egypt, Volume 4 Issue 9, September 2015
Pages: 1375 - 1379Study of Trace Element Concentrations in Breast Cancer by Neutron Activation Analysis
Mohamed A. Abd El- Samad, H. A. Hanafi
Similar Articles with Keyword 'kinetic'
Research Paper, Chemistry, India, Volume 3 Issue 6, June 2014
Pages: 2047 - 2050Removal of Lead from Aqueous Solution Using Black Liquor - A Pulp Mill Waste
Anuja Agarwal, Babita Kapil
Research Paper, Chemistry, India, Volume 4 Issue 2, February 2015
Pages: 2040 - 2044Kinetics and Equilibrium Studies on the Removal of Direct Blue Dye Using Activated Carbon from Phyllanthus Reticulatus (Black Honey)
G. Kavitha, V. Venkateswaran
Research Paper, Chemistry, India, Volume 9 Issue 12, December 2020
Pages: 935 - 940Kinetics of oxidation of m-Toluidine by Potassium Dichromate in Absence and Presence of CTAB
Ritu Singh
Research Paper, Chemistry, Morocco, Volume 4 Issue 8, August 2015
Pages: 538 - 540Moisture Transfer in Wood Packaging below the Fiber Saturation Point
Kawtar EL MOKHTARI; M'hammed EL KOUALI; Mohammed TALBI; Driss BORIKY; Abdlhak EL BROUZI
Research Paper, Chemistry, Kenya, Volume 5 Issue 4, April 2016
Pages: 1754 - 1760Equilibrium Studies for Adsorption of Zn2+ on to Acid Treated Kikuyu Grass Pennisetum Clandestinum Biomass
Genson Murithi, Karanja wa-Thiongo, Wachira Muthengia
Similar Articles with Keyword 'mechanism'
Research Paper, Chemistry, India, Volume 9 Issue 12, December 2020
Pages: 935 - 940Kinetics of oxidation of m-Toluidine by Potassium Dichromate in Absence and Presence of CTAB
Ritu Singh
Research Paper, Chemistry, India, Volume 3 Issue 5, May 2014
Pages: 1865 - 1867Study of Various Factors on Oxidation of p-Nitro Benzoic Acid Hydrazide - A Kinetic and Mechanistic Approach
A. S. Varale, Y. S. Varale
Research Paper, Chemistry, India, Volume 6 Issue 12, December 2017
Pages: 1552 - 1555Mixed Ligand Complexes of Alkali Metal Salts of Some Organic Acids with O-Hydroxyacetophenone Phenylhydrazone ?2, 4 ? Dinitrophenyl Hydrazone
Shahnawaz Mahmood
Research Paper, Chemistry, Nigeria, Volume 4 Issue 8, August 2015
Pages: 1106 - 1111The Formulation of Dispersion Media for Some Organotin Compounds
Stephen G. Yiase
Research Paper, Chemistry, India, Volume 5 Issue 4, April 2016
Pages: 1203 - 1208Kinetic Study of the Hydrolysis of p-Propoxy Aniline Phosphate Triester
Dr. Amit Chaudhary