- surface catalysis
- catalysis in which the reacting substances are adsorbed onto the surface of the catalyst and there react. Cf. contact c.
Medical dictionary. 2011.
surface catalysis
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catalysis — catalytic /kat l it ik/, adj., n. catalytical, adj. catalytically, adv. /keuh tal euh sis/, n., pl. catalyses / seez /. 1. Chem. the causing or accelerating of a chemical change by the addition of a catalyst. 2. an action between two or more… … Universalium
Surface science — is the study of physical and chemical phenomena that occur at the interface of two phases, including solid liquid interfaces, solid gas interfaces, solid vacuum interfaces, and liquid gas interfaces. It includes the fields of surface chemistry… … Wikipedia
Surface engineering — is the sub discipline of materials science which deals with the surface of solid matter. It has applications to chemistry, mechanical engineering, and electrical engineering (particularly in relation to semiconductor manufacturing).Solids are… … Wikipedia
Catalysis — Catalyst redirects here. For other uses, see Catalyst (disambiguation). Solid heterogeneous catalysts such as in automobile catalytic converters are plated on structures designed to maximize their surface area … Wikipedia
Surface diffusion — [ adatom diffusing across a square surface lattice. Note the frequency of vibration of the adatom is greater than the jump rate to nearby sites. Also, the model displays examples of both nearest neighbor jumps (straight) and next nearest neighbor … Wikipedia
catalysis — The effect that a catalyst exerts upon a chemical reaction. [G. katalysis, dissolution] contact c. a process wherein the catalyst is a solid and the catalyzed reaction is produced after the reactants (usually gases) have made contact with the… … Medical dictionary
Phase Boundary Catalysis — (PBC) in chemistry is a type of heterogeneous catalytic system which facilitates the chemical reaction of a particular chemical component in immiscible phase react on a catalytic active site located at phase boundary. The chemical component is… … Wikipedia
Heterogeneous catalysis — is a chemistry term which describes catalysis where the catalyst is in a different phase (ie. solid, liquid and gas, but also oil and water) to the reactants. Heterogeneous catalysts provide a surface for the chemical reaction to take place on.… … Wikipedia
contact catalysis — noun : catalysis in which the catalyst is a solid in contact with gaseous or liquid reactants * * * contact catalysis, catalysis at the surface of a solid catalyst. Contact catalysis takes place when hydrogen and oxygen combine at the surface of… … Useful english dictionary
Diffusion de surface — Figure 1. Modèle de diffusion d un adatome sur un réseau de surface carré. La fréquence de vibration de l adatome est plus grande que la fréquence des sauts aux sites voisins. Ainsi, le modèle montre deux types de sauts : les sauts aux sites … Wikipédia en Français
