| catalyst |
a chemical which, under certain conditions, stimulates a chemical reaction (ie molecular change) in another compound without being consumed in the reaction.
출처: www.citgo.com/CommunityInvolvement/Classroom/Gloss...
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| catalyst |
A chemical substance that increases the rate of a reaction without being consumed; after the reaction it can potentially be recovered from the reaction mixture chemically unchanged. The catalyst lowers the activation energy required, allowing the reaction to proceed more quickly or at a lower temperature. In a fuel cell, the catalyst facilitates the reaction of oxygen and hydrogen. It is usually made of platinum powder very thinly coated onto carbon paper or cloth. ...
출처: www.hydrogenpowerinc.com/hydrogenpower_glossA.htm
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