資料來源 : pyDict

觸媒作用,接觸反應,催化作用

資料來源 : Webster's Revised Unabridged Dictionary (1913)

Catalysis \Ca*tal"y*sis\, n.; pl. {Catalyse}.[ML., fr. Gr. ?
   dissolution, fr. ? to destroy, dissolve; kata` down, wholly +
   ? to loose.]
   1. Dissolution; degeneration; decay. [R.]

            Sad catalysis and declension of piety. --Evelyn.

   2. (Chem.)
      (a) A process by which reaction occurs 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 soluble ferments (as
          diastase, or ptyalin) on starch.
      (b) The catalytic force.

資料來源 : WordNet®

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)]