heterogeneous catalysis

heterogeneous catalysis
Catalysis in which the catalyst is present in a separate phase; normally the catalyst is a solid and the reactants are gas or liquid; it proceeds by the reaction of chemisorbed complexes.

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  • 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

  • heterogeneous catalysis — heterogeninė katalizė statusas T sritis chemija apibrėžtis Katalizė, kurios reaguojančiosios medžiagos ir katalizatorius yra skirtingų fazių. atitikmenys: angl. heterogeneous catalysis rus. гетерогенный катализ …   Chemijos terminų aiškinamasis žodynas

  • 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

  • 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

  • heterogeneous reaction — ▪ chemical reaction       any of a class of chemical reactions in which the reactants are components of two or more phases (solid and gas, solid and liquid, two immiscible liquids) or in which one or more reactants undergo chemical change at an… …   Universalium

  • heterogeneous — [ˌhɛt(ə)rə(ʊ) dʒi:nɪəs, dʒɛn ] adjective 1》 diverse in character or content. 2》 Chemistry denoting a process involving substances in different phases (solid, liquid, or gaseous): heterogeneous catalysis. Derivatives heterogeneity dʒɪ ni:ɪti,… …   English new terms dictionary

  • contact catalysis — heterogeneous catalysis catalysis produced by the adsorbing power of contact surfaces; e.g., catalysis caused by colloidal platinum …   Medical dictionary

  • Homogeneous catalysis — is a chemistry term which describes catalysis where the catalyst is in the same phase (ie. solid, liquid and gas) as the reactants. It is the opposite to heterogeneous catalysis.Notice that two liquids can be different phases. Therefore, for… …   Wikipedia

  • 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

  • phase transfer catalysis — noun a process in which the rate of a reaction in a heterogeneous two phase system is enhanced by the addition of a substance that transfers one of the reactants across the interface between the two phases. See Also: phase transfer catalyst …   Wiktionary

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