Author: Theodore B. Warner
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
Book Description
Surface coverages of oxygen and hydrogen were determined on electrodes of differing activities as a function of time and voltage in the potential decay curve following an anodic pulse. The electrolyte was 1M H2SO4 containing dissolved hydrogen. No important difference, other than rate, is found in the way Pt-O is removed from surfaces of differing activity; however, a significant difference is noted in the way hydrogen resorbs. The rate of Pt-O removal is of apparent first order in adsorbed oxygen when the initial fraction of the surface covered is about 1.0; it is zero order in adsorbed oxygen and amount reacted when the initial surface coverage is less than 0.8. It is zero order in hydrogen partial pressure in both cases. The rate of the decay reaction is probably not limited by mass transport of solution H2 to the surface, by obstruction of active surface sites by sorbed product molecules, or by slow chemisorption of solution H2 on the electrode prior to reaction with Pt-O. (Author).
On the Activity of Platinum Catalysts in Solution. Part 2. Kinetics of the Pt-o Reaction with Hydrogen and of Pt-h Deposition Using a Double-pulse Technique
Author: Theodore B. Warner
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
Book Description
Surface coverages of oxygen and hydrogen were determined on electrodes of differing activities as a function of time and voltage in the potential decay curve following an anodic pulse. The electrolyte was 1M H2SO4 containing dissolved hydrogen. No important difference, other than rate, is found in the way Pt-O is removed from surfaces of differing activity; however, a significant difference is noted in the way hydrogen resorbs. The rate of Pt-O removal is of apparent first order in adsorbed oxygen when the initial fraction of the surface covered is about 1.0; it is zero order in adsorbed oxygen and amount reacted when the initial surface coverage is less than 0.8. It is zero order in hydrogen partial pressure in both cases. The rate of the decay reaction is probably not limited by mass transport of solution H2 to the surface, by obstruction of active surface sites by sorbed product molecules, or by slow chemisorption of solution H2 on the electrode prior to reaction with Pt-O. (Author).
Publisher:
ISBN:
Category :
Languages : en
Pages : 21
Book Description
Surface coverages of oxygen and hydrogen were determined on electrodes of differing activities as a function of time and voltage in the potential decay curve following an anodic pulse. The electrolyte was 1M H2SO4 containing dissolved hydrogen. No important difference, other than rate, is found in the way Pt-O is removed from surfaces of differing activity; however, a significant difference is noted in the way hydrogen resorbs. The rate of Pt-O removal is of apparent first order in adsorbed oxygen when the initial fraction of the surface covered is about 1.0; it is zero order in adsorbed oxygen and amount reacted when the initial surface coverage is less than 0.8. It is zero order in hydrogen partial pressure in both cases. The rate of the decay reaction is probably not limited by mass transport of solution H2 to the surface, by obstruction of active surface sites by sorbed product molecules, or by slow chemisorption of solution H2 on the electrode prior to reaction with Pt-O. (Author).
Report of NRL Progress
Author: Naval Research Laboratory (U.S.)
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 532
Book Description
Publisher:
ISBN:
Category : Naval research
Languages : en
Pages : 532
Book Description
Scientific and Technical Aerospace Reports
U.S. Government Research & Development Reports
Corrosion Abstracts
Author:
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 804
Book Description
Publisher:
ISBN:
Category : Corrosion and anti-corrosives
Languages : en
Pages : 804
Book Description
U.S. Government Research and Development Reports Index
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 582
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 582
Book Description
Government Reports Index
Author:
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 596
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 596
Book Description
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages :
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
U. S. Government Research and Development Reports
Government Reports Annual Index
Author:
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 828
Book Description
Publisher:
ISBN:
Category : Government reports announcements & index
Languages : en
Pages : 828
Book Description