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positive catalyst

См. также в других словарях:

  • Bifunctional catalyst — A catalyst with two contrasting functional components often a Lewis acid and Lewis base. Overview The broadest description of the most common definition of a bifunctional catalyst is a catalyst that contains Lewis acidic and Lewis basic component …   Wikipedia

  • Novel — For other uses, see Novel (disambiguation). Not to be confused with Novell. New novels in a Oldenburg bookshop, February 2009 …   Wikipedia

  • Dan Brown — For other uses, see Daniel Brown (disambiguation). Dan Brown Born June 22, 1964 (1964 06 22) (age 47) Exeter, New Hampshire, U.S …   Wikipedia

  • Roman — Stapel von Roman Neuerscheinungen in einer Buchhandlung, Februar 2009 Der Roman ist im Spektrum der literarischen Gattungen, das sich im 19. Jahrhundert herausbildete, die Langform der schriftlich fixierten Erzählung. Historisch benachbarte… …   Deutsch Wikipedia

  • ac|cel|er|ant — «ak SEHL uhr uhnt», noun, adjective. –n. 1. something that causes acceleration. 2. Chemistry. a positive catalyst; accelerator. –adj. accelerating …   Useful english dictionary

  • Catalysis — Catalyst redirects here. For other uses, see Catalyst (disambiguation). Solid heterogeneous catalysts such as in automobile catalytic converters are plated on structures designed to maximize their surface area …   Wikipedia

  • Mathematics and Physical Sciences — ▪ 2003 Introduction Mathematics       Mathematics in 2002 was marked by two discoveries in number theory. The first may have practical implications; the second satisfied a 150 year old curiosity.       Computer scientist Manindra Agrawal of the… …   Universalium

  • Fuel cell — For other uses, see Fuel cell (disambiguation). Demonstration model of a direct methanol fuel cell. The actual fuel cell stack is the layered cube shape in the center of the image A fuel cell is a device that converts the chemical energy from a… …   Wikipedia

  • Ethylene oxide — Oxirane redirects here. For oxiranes as a class of molecules, see epoxide. Ethylene oxide …   Wikipedia

  • 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

  • Glossary of fuel cell terms — The Glossary of fuel cell terms lists the definitions of many terms used within the fuel cell industry. The terms in this glossary may be used by fuel cell industry associations, in education material and fuel cell codes and standards to name but …   Wikipedia

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