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catalyst promotes a reaction

См. также в других словарях:

  • catalyst — A substance that promotes a chemical reaction by lowering the activation energy of a chemical reaction, without itself undergoing any permanent chemical change …   Glossary of Biotechnology

  • Stille reaction — The Stille reaction is a chemical reaction coupling an organotin compound with an sp2 hybridized organic halide catalyzed by palladium. [ Kosugi, M. et al. Chem. Letters 1977, 301.] [ Milstein, D.; Stille, J. K. J. Am. Chem. Soc. 1978, 100 , 3636 …   Wikipedia

  • Baylis–Hillman reaction — The Baylis–Hillman reaction is an organic reaction of an aldehyde and an α,β unsaturated electron withdrawing group catalyzed by DABCO (1,4 diazabicyclo[2.2.2]octane) to give an allylic alcohol.[1][2] This reaction is also known as the… …   Wikipedia

  • Baylis-Hillman reaction — The Baylis Hillman reaction is an organic reaction of an aldehyde and an α,β unsaturated electron withdrawing group catalyzed by DABCO (1,4 diazabicyclo [2.2.2] octane) to give an allylic alcohol [Baylis, A. B.; Hillman, M. E. D. German Patent… …   Wikipedia

  • petroleum refining — Introduction  conversion of crude oil into useful products. History Distillation of kerosene and naphtha       The refining of crude petroleum owes its origin to the successful drilling of the first oil well in Titusville, Pa., in 1859. Prior to… …   Universalium

  • Nobel Prizes — ▪ 2009 Introduction Prize for Peace       The 2008 Nobel Prize for Peace was awarded to Martti Ahtisaari, former president (1994–2000) of Finland, for his work over more than 30 years in settling international disputes, many involving ethnic,… …   Universalium

  • aldehyde — aldehydic, adj. /al deuh huyd /, n. Chem. any of a class of organic compounds containing the group CHO, which yields acids when oxidized and alcohols when reduced. [1840 50; < NL al(cohol) dehyd(rogenatum) dehydrogenated alcohol] * * * Any of a… …   Universalium

  • Acid catalysis — In acid catalysis and base catalysis a chemical reaction is catalyzed by an acid or a base. The acid is often the proton and the base is often a hydroxyl ion. Typical reactions catalysed by proton transfer are esterfications and aldol reactions.… …   Wikipedia

  • promoter — [prə mōt′ər, prōmōt′ər] n. [ME < MFr promoteur < ML promotor] 1. a person or thing that promotes; specif., a person who begins, secures financing for, and helps to organize an undertaking, as a business or a sports event 2. Chem. a… …   English World dictionary

  • Pyridine — Pyridine …   Wikipedia

  • Biodiesel production — is the act of producing the biofuel, biodiesel, through either transesterification or alcoholysis. The process involves reacting vegetable oils or animal fats catalytically with a short chain aliphatic alcohols (typically methanol or… …   Wikipedia

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