The rôle of diffusion during catalysis by colloidal metals and similar substances. | Zendy

Henry J. S. Sand | Zendy; John Henry Poynting | Zendy

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The rôle of diffusion during catalysis by colloidal metals and similar substances.

Author(s) -

Henry J. S. Sand,

John Henry Poynting

Publication year - 1905

Publication title -

proceedings of the royal society of london

Language(s) - English

Resource type - Journals

eISSN - 2053-9126

pISSN - 0370-1662

DOI - 10.1098/rspl.1904.0127

Subject(s) - diffusion , nernst equation , chemical reaction , catalysis , boundary (topology) , colloid , convection , chemistry , colloidal particle , thermodynamics , chemical equilibrium , chemical physics , physics , organic chemistry , mathematics , mathematical analysis , electrode

In a paper on reaction-velocities in heterogeneous systems, Nernst has recently put forward the view that all chemical reactions taking place on the boundary of two phases proceed to equilibrium practically instantaneously, and that the velocities actually observed are simply those with which diffusion and convection renew the reacting material at the boundary. As a special instance of heterogeneous reactions, he mentions catalytic decompositions due to finely divided particles, such as colloidal metals, and he believes it probable that the kinetics of these reactions can be deduced from the assumption that chemical equilibrium remains permanently established on the surface of the particles.

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