Over-potential of the hydrogen isotopes

Over-potential of the hydrogen isotopes

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ABSTRACT ALTHOUGH the separation of the two hydrogen isotopes which occurs on electrolysis must be closely connected with their over-potentials, no measurement of these has been published. A comparison of the deuterium over-potential with that of hydrogen can be of value in elucidating the general mechanism of hydrogen over -potential itself and, as part of an experimental investigation of this, measurements have been made on deuterium. In order to eliminate errors due to the resistance of the electrolyte and to violent gas evolution, it is essential that very low current densities should be used, and the electrolyte must be free from traces of oxygen or dissolved impurities. The over-potential measurements were made under conditions similar to those described in earlier papers1, but it was a matter of some experimental difficulty to realise these with the small quantities of electrolyte available (1 c.c.). The results obtained with a mercury cathode in a 0.2 _N_ sulphuric acid electrolyte are shown in Fig. 1. Access through your institution Buy or subscribe This is a preview of subscription content, access via your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn more Buy this article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in * Learn about institutional subscriptions * Read our FAQs * Contact customer support REFERENCES * Bowden, _Proc. Roy. Soc._, A, 125, 446; 1929. Article  ADS  CAS  Google Scholar  * Bowden, _Proc. Roy. Soc._, A, 126, 108; 1929. Article  ADS  Google Scholar  * Farkas and Farkas, _Proc. Roy. Soc._, A, 146, 623; 1934. Article  ADS  CAS  Google Scholar  * Eyring and Topley, _J. Chem Phys._, 2, 217; 1934. Bell and Wolfenden, _NATURE_, 133, 25; 1934. Article  Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Laboratory of Physical Chemistry, Cambridge F. P. BOWDEN & H. F. KENYON Authors * F. P. BOWDEN View author publications You can also search for this author inPubMed Google Scholar * H. F. KENYON View author publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE BOWDEN, F., KENYON, H. Over-Potential of the Hydrogen Isotopes. _Nature_ 135, 105 (1935). https://doi.org/10.1038/135105a0 Download citation * Issue Date: 19 January 1935 * DOI: https://doi.org/10.1038/135105a0 SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to clipboard Provided by the Springer Nature SharedIt content-sharing initiative

ABSTRACT ALTHOUGH the separation of the two hydrogen isotopes which occurs on electrolysis must be closely connected with their over-potentials, no measurement of these has been published. A


comparison of the deuterium over-potential with that of hydrogen can be of value in elucidating the general mechanism of hydrogen over -potential itself and, as part of an experimental


investigation of this, measurements have been made on deuterium. In order to eliminate errors due to the resistance of the electrolyte and to violent gas evolution, it is essential that very


low current densities should be used, and the electrolyte must be free from traces of oxygen or dissolved impurities. The over-potential measurements were made under conditions similar to


those described in earlier papers1, but it was a matter of some experimental difficulty to realise these with the small quantities of electrolyte available (1 c.c.). The results obtained


with a mercury cathode in a 0.2 _N_ sulphuric acid electrolyte are shown in Fig. 1. Access through your institution Buy or subscribe This is a preview of subscription content, access via


your institution ACCESS OPTIONS Access through your institution Subscribe to this journal Receive 51 print issues and online access $199.00 per year only $3.90 per issue Learn more Buy this


article * Purchase on SpringerLink * Instant access to full article PDF Buy now Prices may be subject to local taxes which are calculated during checkout ADDITIONAL ACCESS OPTIONS: * Log in


* Learn about institutional subscriptions * Read our FAQs * Contact customer support REFERENCES * Bowden, _Proc. Roy. Soc._, A, 125, 446; 1929. Article  ADS  CAS  Google Scholar  * Bowden,


_Proc. Roy. Soc._, A, 126, 108; 1929. Article  ADS  Google Scholar  * Farkas and Farkas, _Proc. Roy. Soc._, A, 146, 623; 1934. Article  ADS  CAS  Google Scholar  * Eyring and Topley, _J.


Chem Phys._, 2, 217; 1934. Bell and Wolfenden, _NATURE_, 133, 25; 1934. Article  Google Scholar  Download references AUTHOR INFORMATION AUTHORS AND AFFILIATIONS * Laboratory of Physical


Chemistry, Cambridge F. P. BOWDEN & H. F. KENYON Authors * F. P. BOWDEN View author publications You can also search for this author inPubMed Google Scholar * H. F. KENYON View author


publications You can also search for this author inPubMed Google Scholar RIGHTS AND PERMISSIONS Reprints and permissions ABOUT THIS ARTICLE CITE THIS ARTICLE BOWDEN, F., KENYON, H.


Over-Potential of the Hydrogen Isotopes. _Nature_ 135, 105 (1935). https://doi.org/10.1038/135105a0 Download citation * Issue Date: 19 January 1935 * DOI: https://doi.org/10.1038/135105a0


SHARE THIS ARTICLE Anyone you share the following link with will be able to read this content: Get shareable link Sorry, a shareable link is not currently available for this article. Copy to


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