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  1. Dictionary
    catalyst
    /ˈkatəlɪst/

    noun

    • 1. a substance that increases the rate of a chemical reaction without itself undergoing any permanent chemical change: "chlorine acts as a catalyst promoting the breakdown of ozone"

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  2. www.britannica.com › science › catalysisCatalysis | Chemistry, Classification, & Chemical Reactions

    5 days ago · Catalysis, the modification of the rate of a chemical reaction, usually an acceleration, by addition of a substance not consumed during the reaction. Each catalyst molecule may induce the transformation of many molecules of reactants. Learn about the history, classification, and reactions of catalysis.

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  4. www.vedantu.com › question-answer › define-catalystDefine catalyst. - Vedantu

    Jun 29, 2024 · A catalyst is a substance that is added to a chemical reaction to increase the reaction rate without getting consumed in the process. There are basically two types of catalysts: inorganic catalysts and organic catalysts.

  5. www.britannica.com › science › catalysisCatalysis - Heterogeneous, Enzymes, Reactions | Britannica

    5 days ago · Catalysis - Heterogeneous, Enzymes, Reactions: Many catalytic processes are known in which the catalyst and the reactants are not present in the same phase—that is, state of matter. These are known as heterogeneous catalytic reactions.

  6. library.fiveable.me › ap-bio › unit-3Enzyme Catalysis - AP Bio Study Guide 2024 | Fiveable

    Jun 18, 2024 · Catalyst: A catalyst is any substance that increases the rate of a chemical reaction by lowering its activation energy but remains unchanged itself after the reaction has occurred.

  7. www.nature.com › subjects › heterogeneous-catalysisHeterogeneous catalysis - Latest research and news | Nature

    Jun 27, 2024 · Definition. Heterogeneous catalysis is a type of catalysis in which the catalyst occupies a different phase from the reactants and products.

  8. www.nature.com › subjects › biocatalysisBiocatalysis - Latest research and news | Nature

    Jun 27, 2024 · Biocatalysis is the chemical process through which enzymes or other biological catalysts perform reactions between organic components. Biocatalysis has been used widely in the...

  9. www.nature.com › subjects › catalyst-synthesisCatalyst synthesis - Latest research and news | Nature

    Jun 29, 2024 · Definition. Catalyst synthesis is the process of fabricating catalytic materials. It aims to optimize factors such as the catalyst activity, selectivity, stability and cost.