homogeneous- heterogeneous catalysis

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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

• 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

• 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

• 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

• Organogold chemistry — is the study of compounds containing carbon gold bonds. They are studied in academic research, but have not received widespread use otherwise. The dominant oxidation states for organogold compounds are I with coordination number 2 and a linear… …   Wikipedia

• Hydrogenation — |date=1996|location=Washington, D.C.|pages=429|id=ISBN 0 8412 3344 6] Because of the importance of hydrogen, many related reactions have been developed for its use. Most hydrogenations use gaseous hydrogen (H2), but some involve the alternative… …   Wikipedia

• Cluster chemistry — In chemistry, a cluster is an ensemble of bound atoms intermediate in size between a molecule and a bulk solid. Clusters exist of diverse stoichiometries and nuclearities. For example, carbon and boron atoms form fullerene and borane clusters,… …   Wikipedia

• Chemical reaction — Chemical reactions redirects here. For the 2007 television episode, see Chemical Reactions (Men in Trees). A thermite reaction using iron(III) oxide. The sparks …   Wikipedia

• John Meurig Thomas — Sir John Meurig Thomas FRS (born December 15, 1932), is a leading British chemist and educator primarily known for his work on heterogeneous catalysis, solid state chemistry, and surface and materials science. He has authored over one thousand… …   Wikipedia