ca·tal·y·sis /kəˈtæləsəs/
 觸媒作用,接觸反應,催化作用


 ca·tal·y·sis /kəˈtæləsəs/ 名詞
 催化


 Ca·tal·y·sis n.; pl. Catalyse.
 1. Dissolution; degeneration; decay. [R.]
    Sad catalysis and declension of piety.   --Evelyn.
 2. Chem. (a) A process by which a chemical reaction is accelerated in the presence of certain agents which were formerly believed to exert an influence by mere contact. It is now believed that such reactions are attended with the formation of an intermediate compound or compounds, so that by alternate composition and decomposition the agent is apparenty left unchanged; as, the catalysis of making ether from alcohol by means of sulphuric acid; or catalysis in the action of enzymes (as diastase, or ptyalin) on starch. (b) The catalytic force.

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 catalysis
      n : acceleration of a chemical reaction induced the presence of
          material that is chemically unchanged at the end of the
          reaction; "of the top 50 commodity chemicals, 30 are
          created directly by catalysis and another 6 are made from
          raw materials that are catalytically produced" [syn: {contact
          action]
      [also: catalyses (pl)]