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Turnover number. In chemistry, the term " turnover number " has two distinct meanings. In enzymology, the turnover number (kcat) is defined as the limiting number of chemical conversions of substrate molecules per second that a single active site will execute for a given enzyme concentration [ET] for enzymes with two or more active sites. [1 ...
List of mesons. ) is a process that involves both weak and strong interactions. ). ). This list is of all known and predicted scalar, pseudoscalar and vector mesons. See list of particles for a more detailed list of particles found in particle physics. This article contains a list of mesons, unstable subatomic particles composed of one quark ...
Infobox references. (R)-2-Methyl-CBS-oxazaborolidine is an organoboron catalyst that is used in organic synthesis. This catalyst, developed by Itsuno [1][2] and Elias James Corey, [3][4][5] is generated by heating (R)- (+)-2- (diphenylhydroxymethyl) pyrrolidine along with trimethylboroxine or methylboronic acid.
Catalytic converter. A catalytic converter is an exhaust emission control device which converts toxic gases and pollutants in exhaust gas from an internal combustion engine into less-toxic pollutants by catalyzing a redox reaction. Catalytic converters are usually used with internal combustion engines fueled by gasoline or diesel, including ...
Catalysis. An air filter that uses a low-temperature oxidation catalyst to convert carbon monoxide to less toxic carbon dioxide at room temperature. It can also remove formaldehyde from the air. Catalysis (/ kəˈtæləsɪs /) is the increase in rate of a chemical reaction due to an added substance known as a catalyst[1][2] (/ ˈkætəlɪst /).
Quantum catalyst. In quantum information theory, a quantum catalyst is a special ancillary quantum state whose presence enables certain local transformations that would otherwise be impossible. [1][2] Quantum catalytic behaviour has been shown to arise from the phenomenon of catalytic majorization. [3]
The catalyst mainly used in the industry today is a copper - zinc - alumina (Cu/ZnO/Al 2 O 3) based catalyst. Also the LTS catalyst has to be activated by reduction before it can be used. The reduction reaction CuO + H 2 →Cu + H 2 O is highly exothermic and should be conducted in dry gas for an optimal result.
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