catalyst

英 [ˈkætəlɪst]

美 [ˈkætəlɪst]

n.  催化剂; 促使变化的人; 引发变化的因素

复数：catalysts　

CET6TOEFLIELTSGRETEM4TEM8计算机

Collins.1 / BNC.8852 / COCA.7915

牛津词典

noun

• 催化剂
  a substance that makes a chemical reaction happen faster without being changed itself
• 促使变化的人；引发变化的因素
  a person or thing that causes a change
  1. I see my role as being a catalyst for change.
     我认为我的角色是促成变革。

柯林斯词典

• N-COUNT 催化剂;诱因;诱导者
  You can describe a person or thing that causes a change or event to happen as acatalyst.
  1. I very much hope that this case will prove to be a catalyst for change...
     我非常希望这起事件能催生变革。
  2. He said he saw the bank's role as a catalyst to encourage foreign direct investment.
     他说，他认为银行就应该起到刺激外国直接投资的作用。
• (化学)催化剂
  In chemistry, acatalystis a substance that causes a chemical reaction to take place more quickly.

英英释义

noun

• something that causes an important event to happen
  1. the invasion acted as a catalyst to unite the country
• (chemistry) a substance that initiates or accelerates a chemical reaction without itself being affected
  Synonym:accelerator

双语例句

• Dichloropropanol was synthesized by chlorination of glycerol with hydrogen chloride under catalysis of organic acids and self-made inorganic catalyst.
  以甘油为原料，氯化氢气体为氯化剂，分别在自制无机催化剂和有机酸的催化作用下制取了二氯丙醇。
• With more active catalyst, the reaction was carried out completely.
  由于使用了活性较大的催化剂，反应进行地很彻底。
• Suspension bed hydrocracking technology and water soluble catalyst were used for upgrading of atmospheric residue from Dagang oil field.
  采用悬浮床加氢技术和水溶性分散催化剂对大港常压渣油进行了轻质化和改质研究。
• Synthesis of allantoin from glyoxylic acid and urea using ion exchange resins as catalyst was investigated.
  对三种阳离子交换树脂在乙醛酸与尿素缩合反应中的催化活性进行了研究。
• The influence of middle rare earth oxides on the activity of Pd catalyst has been discussed in this article.
  本文研究了中稀土氧化物对钯催化剂活性的影响。
• The effects of catalyst and solvent on the reaction were studied.
  探讨了催化剂、反应溶剂等对反应的影响。
• The progress on the research of immobilization of homogeneous catalyst is introduced.
  介绍了均相催化剂的固载化研究进展。
• Ethylene glycol monoether acetate are synthesized from acetic acid and ethylene glycol monoethyl ether with supported phosphotungstic acid catalyst.
  以醋酸和乙二醇单乙醚为原料，活性白土负载磷钨酸作为催化剂，合成了乙二醇单乙醚醋酸酯。
• Latest advances and developing trend in copper-based CO low temperature shift catalyst are reviewed in this paper.
  本文详细介绍了铜基一氧化碳低温变换催化剂近几年来的发展概况和发展趋势。
• Isoamyl butyrate was synthesized from butyric acid and isoamyl catalyzed by composite solid acid as the catalyst.
  用丁酸和异戊醇为原料，复合固体酸为催化剂合成了丁酸异戊酯。