Transfer of 2 H to the oxygen to yield H 2O.The growth of the hydrocarbon chain may be visualized as involving a repeated sequence in which hydrogen atoms are added to carbon and oxygen, the C–O bond is split and a new C–C bond is formed.įor one –CH 2– group produced by CO + 2 H 2 → (CH 2) + H 2O, several reactions are necessary: Fischer–Tropsch intermediates and elemental reactions Ĭonverting a mixture of H 2 and CO into aliphatic products is a multi-step reaction with several intermediate compounds. The reaction is a highly exothermic reaction due to a standard reaction enthalpy (ΔH) of −165 kJ/mol CO combined. In addition to alkane formation, competing reactions give small amounts of alkenes, as well as alcohols and other oxygenated hydrocarbons. Most of the alkanes produced tend to be straight-chain, suitable as diesel fuel. The formation of methane ( n = 1) is unwanted. The more useful reactions produce alkanes as follows: (2 n + 1) H 2 + n CO → C nH 2 n+2 + n H 2O The Fischer–Tropsch process involves a series of chemical reactions that produce a variety of hydrocarbons, ideally having the formula (C nH 2 n+2). Methylidynetricobaltnonacarbonyl is a molecule that illustrates the kind of reduced carbon species speculated to occur in the Fischer–Tropsch process. The process was first developed by Franz Fischer and Hans Tropsch at the Kaiser Wilhelm Institute for Coal Research in Mülheim an der Ruhr, Germany, in 1925. Fischer-Tropsch process is discussed as a step of producing carbon-neutral liquid hydrocarbon fuels from CO 2 and hydrogen. This process has received intermittent attention as a source of low-sulfur diesel fuel and to address the supply or cost of petroleum-derived hydrocarbons. The process then converts these gases into synthetic lubrication oil and synthetic fuel. In the usual implementation, carbon monoxide and hydrogen, the feedstocks for FT, are produced from coal, natural gas, or biomass in a process known as gasification. The Fischer–Tropsch process is an important reaction in both coal liquefaction and gas to liquids technology for producing liquid hydrocarbons. These reactions occur in the presence of metal catalysts, typically at temperatures of 150–300 ☌ (302–572 ☏) and pressures of one to several tens of atmospheres. The Fischer–Tropsch process is a collection of chemical reactions that converts a mixture of carbon monoxide and hydrogen, known as syngas, into liquid hydrocarbons. Chemical reactions that convert carbon monoxide and hydrogen into liquid hydrocarbons
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