M P , Sridhar Kumar and B, Viswanathan and C. S, Swamy and V, Srinivasan (1988) High temperature interaction of hydrogen with intermetallic compound CaNi5. Materials Chemistry and Physics, 20 . pp. 245-253.
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Abstract
The intermetallic compound CaNi disproportionates rapidly into CaH2 and Ni when treated with hydrogen above 350°C. The kinetics of this reaction in the initial stages follows the nucleation and growth mechanism. The pressuxe-compositiontemperature isotherms for hydrogen interaction with CaNi5 in the temperature range 640°C to 725°C have been determined and the delta Hf for CaNi5 is calculated to be 12.9 kcal/mol. Differential thermal analysis confirms the scheme proposed for the CaNi5-H2 reaction. Even a 5% disproportionation of the alloy drastically affects the kinetics of hydrogen sorption at room temperature.
| Item Type: | Article |
|---|---|
| Subjects: | Science > Chemistry |
| ID Code: | 398 |
| Deposited By: | INVALID USER |
| Deposited On: | 20 Mar 2007 05:46 |
| Last Modified: | 20 Mar 2007 05:46 |
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