The electrochemical behaviour of the tin-iron couple in dilute acid media

1934 ◽  
Vol 30 ◽  
pp. 472 ◽  
Author(s):  
T. P. Hoar
Keyword(s):  
Electrochemical Behaviour ◽  
Dilute Acid ◽  
Acid Media

Ac-impedance and Raman spectroscopy study of the electrochemical behaviour of pure aluminium in citric acid media

2001 ◽  
Vol 46 (12) ◽  
pp. 1871-1878 ◽  
Author(s):  
I.V Aoki ◽  
M.-C Bernard ◽  
S.I.Cordoba de Torresi ◽  
C Deslouis ◽  
H.G de Melo ◽  
...  
Keyword(s):  
Raman Spectroscopy ◽  
Citric Acid ◽  
Electrochemical Behaviour ◽  
Ac Impedance ◽  
Pure Aluminium ◽  
Spectroscopy Study ◽  
Acid Media

The acid-catalyzed decomposition of nitramide

1996 ◽  
Vol 74 (10) ◽  
pp. 1779-1783 ◽  
Author(s):  
Robin A. Cox
Keyword(s):  
Rate Constants ◽  
Activation Parameters ◽  
Cyclic Process ◽  
Dilute Acid ◽  
Acid Media ◽  
Dilute Acid Solution ◽  
Acid Catalyzed ◽  
Reaction With Water ◽  
Hydrochloric And Sulfuric Acids ◽  
Good Agreement

Much attention has been paid to the base-catalyzed decomposition of nitramide, but despite this it was not certain that a corresponding acid-catalyzed reaction even existed before the work described in this paper. The excess acidity method has been applied to nitramide decomposition rate constants obtained in aqueous perchloric acid media, and to a lesser extent in aqueous hydrochloric and sulfuric acids. This analysis shows that the decomposition in dilute acid solution is actually a base-catalyzed reaction, with water acting as the base (perhaps in a cyclic process involving two water molecules), with rate constants in good agreement with previous estimates. However, in more concentrated acid media a true acid-catalyzed reaction can be dissected out. Activation parameters are given for both mechanisms, and it is shown that the acid-catalyzed process is similar to the acid-catalyzed decomposition of alkylnitramines. In sulfuric acid the reaction is slightly faster than it is in the other acids, due to the presence of a base-catalyzed process involving sulfate. Key words: nitramide, excess acidity, acid-catalyzed, base-catalyzed, kinetics.

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