catalyst poison

catalyst poison
a substance firmly bound to the active areas on the surface of a catalyst, which prevents the adsorption of the reactants for the desired chemical reaction.

Medical dictionary. 2011.

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  • catalyst poison — ▪ chemistry       substance that reduces the effectiveness of a catalyst in a chemical reaction. In theory, because catalysts are not consumed in chemical reactions, they can be used repeatedly over an indefinite period of time. In practice,… …   Universalium

  • Poison — Any substance that can cause severe distress or death if ingested, breathed in, or absorbed through the skin. Many substances that normally cause no problems, including water and most vitamins, can be poisonous if taken in too large of a quantity …   Medical dictionary

  • poison — I. noun Etymology: Middle English, from Anglo French poisun drink, potion, poison, from Latin potion , potio drink more at potion Date: 13th century 1. a. a substance that through its chemical action usually kills, injures, or impairs an organism …   New Collegiate Dictionary

  • poison — [poi′zən] n. [OFr < L potio, POTION] 1. a substance causing illness or death when eaten, drunk, or absorbed even in relatively small quantities 2. anything harmful or destructive to happiness or welfare, such as an idea, emotion, etc. 3. in a… …   English World dictionary

  • poison — /ˈpɔɪzən / (say poyzuhn) noun 1. any substance (liquid, solid, or gaseous) which by reason of an inherent deleterious property tends to destroy life or impair health. 2. anything harmful, fatal, baneful, or highly pernicious, as to character,… …  

  • poison — poisoner, n. poisonless, adj. poisonlessness, n. /poy zeuhn/, n. 1. a substance with an inherent property that tends to destroy life or impair health. 2. something harmful or pernicious, as to happiness or well being: the poison of slander. 3.… …   Universalium

  • poison — poi•son [[t]ˈpɔɪ zən[/t]] n. 1) pha a substance that has an inherent tendency to destroy life or impair health 2) something harmful or pernicious, as to happiness or well being 3) to administer poison to (a person or animal) 4) pat to kill or… …   From formal English to slang

  • poison — noun 1》 a substance that causes death or harm when introduced into or absorbed by a living organism. 2》 something that has a destructive or corrupting influence. 3》 Chemistry a substance that reduces the activity of a catalyst. 4》 Physics an… …   English new terms dictionary

  • каталитический яд — контактный яд — [Я.Н.Лугинский, М.С.Фези Жилинская, Ю.С.Кабиров. Англо русский словарь по электротехнике и электроэнергетике, Москва, 1999 г.] Тематики электротехника, основные понятия Синонимы контактный яд EN catalyst poisoncontact poison …   Справочник технического переводчика

  • Schwefel — Eigenschaften …   Deutsch Wikipedia

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