WorldCat Identities

Doniat, D.

Works: 2 works in 8 publications in 2 languages and 6 library holdings
Roles: Author
Publication Timeline
Most widely held works by D Doniat
Pile à hydrogène à électrolyte alcalin immobilisé : rapport final by D Doniat( Book )

6 editions published in 1984 in French and held by 4 WorldCat member libraries worldwide

Study of the mechanism of the electrochemical oxidation of hydrocarbons by experimental separation of reaction steps( Book )

2 editions published between 1967 and 1969 in English and held by 2 WorldCat member libraries worldwide

A selective analysis of adsorption applied to a hydrocarbon - platinum system was used to obtain quantitative data concerning the initial activation energy of adsorption, the value of the adsorption interaction coefficient, and the number of sites occupied as the result of the adsorption of a molecule. These data were determined at temperatures of 80 and 90C in normal sulphuric acid. It was also possible to establish a comparison with diluted phosphoric acid in the case of certain reactants. The values obtained for the initial activation energy of adsorption and the number of sites show that, under these conditions, it is the end groups of the chain which are attacked, each group losing one hydrogen atom. In the case of a hydrocarbon having a branching chain, such as iso-butane, it is the three methyl groups which lose one hydrogen atom each. The initial activation energy of adsorption is higher as the chain is longer for the same number of groups affected in a molecule. On the other hand, the longer the chain the lower is the coefficient of interaction. Lastly, the higher the temperature the more pronounced is the dehydrogenation. (Author)
Audience Level
Audience Level
  Kids General Special  
Audience level: 0.89 (from 0.85 for Study of t ... to 0.91 for Pile à hy ...)