资料来源 : pyDict
触媒作用,接触反应,催化作用
资料来源 : 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.
资料来源 : 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)]