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Hydrocarbon skeletal reactions

Fig. 9. Pulse microreactor system for use with 13C-labeled hydrocarbons. D, E, and J are microreactors J contains the catalyst to be used for hydrocarbon skeletal reaction D and E are used, when necessary, to generate the required reactant hydrocarbon from a non-hydrocarbon precursor (e.g., alcohol dehydration in D and olefin hydrogenation in E) reactant injected at C. F is a trap which allows the accumulation of products from several reaction pulses before analysis G is a G.P.C. column, K a katharometer. Traps H collect fractions separated on G for subsequent mass spectrometric study. When generating reactant hydrocarbon in D and E, a two-step process is preferable in which, with J below reaction temperature, the purified reactant hydrocarbon is collected in H, and this is recycled as reactant with D and E below reaction temperature but with J at reaction temperature. After C. Corolleur, S. Corolleur, and F. G. Gault, J. Catal. 24, 385 (1972). Fig. 9. Pulse microreactor system for use with 13C-labeled hydrocarbons. D, E, and J are microreactors J contains the catalyst to be used for hydrocarbon skeletal reaction D and E are used, when necessary, to generate the required reactant hydrocarbon from a non-hydrocarbon precursor (e.g., alcohol dehydration in D and olefin hydrogenation in E) reactant injected at C. F is a trap which allows the accumulation of products from several reaction pulses before analysis G is a G.P.C. column, K a katharometer. Traps H collect fractions separated on G for subsequent mass spectrometric study. When generating reactant hydrocarbon in D and E, a two-step process is preferable in which, with J below reaction temperature, the purified reactant hydrocarbon is collected in H, and this is recycled as reactant with D and E below reaction temperature but with J at reaction temperature. After C. Corolleur, S. Corolleur, and F. G. Gault, J. Catal. 24, 385 (1972).
Metal Catalyzed Skeletal Reactions of Hydrocarbons J. R. Anderson... [Pg.427]

In addition to this skeletal isomerization reaction, Anderson and Avery (24) showed that in a suitable isotopically labeled hydrocarbon, a reaction leading to positional isomerization occurred. Thus, with n-butane-l-13C as the reactant, the isomerization products were 2-(methyl-13C) propane, and 7i-butane-2-13C ... [Pg.30]

Further isomerization reactions may occur with alkyl-substituted aromatic reaction products, and a considerable study has been made of the reactions of this type of molecule. The following are the main types of skeletal reactions involving alkyl substituents on an aromatic ring (a) If the substituent chain is sufficiently large, there may occur within it all of the processes we have already discussed for aliphatic hydrocarbons them-... [Pg.54]

Open chain hydrocarbons, skeletal rearrangements, 29 298-302 aromatic selectivities, 29 302 atomization, 29 298-302 cyclization, 29 298-302 Open sequence in reaction mechanisms, 32 ... [Pg.163]

Reduction of p-ketoesters in aqueous ethanolic sulphuric acid leads to removal of both functional groups and the formation of a hydrocarbon. This reaction which was discovered in 1907 [117] and recognised in 1912 [118] as involving a skeletal rearrangement is now termed the Tafel rearrangement. Conversions of the type 26 into 27 occur in 30 - 60 % yields [118,119] and the hydrocarbon is easily separated... [Pg.351]

Metal catalysed skeletal reactions of hydrocarbons on metal catalysts. Dispersed metal catalysts. [Pg.120]

The discussion to this point has emphasized kinetics of catalytic reactions on a uniform surface where only one type of active site participates in the reaction. Bifunctional catalysts operate by utilizing two different types of catalytic sites on the same solid. For example, hydrocarbon reforming reactions that are used to upgrade motor fuels are catalyzed by platinum particles supported on acidified alumina. Extensive research revealed that the metallic function of Pt/Al203 catalyzes hydrogenation/dehydrogenation of hydrocarbons, whereas the acidic function of the support facilitates skeletal isomerization of alkenes. The isomerization of n-pentane (N) to isopentane (I) is used to illustrate the kinetic sequence associated with a bifunctional Pt/Al203 catalyst ... [Pg.170]

At low temperature these ions have little influence on the skeletal reactions of hydrocarbons. A possible role of ions in the high temperature region is not excluded but as yet is not proven. [Pg.116]

See other pages where Hydrocarbon skeletal reactions is mentioned: [Pg.179]    [Pg.111]    [Pg.179]    [Pg.111]    [Pg.1]    [Pg.7]    [Pg.9]    [Pg.11]    [Pg.13]    [Pg.15]    [Pg.21]    [Pg.23]    [Pg.29]    [Pg.41]    [Pg.45]    [Pg.47]    [Pg.55]    [Pg.63]    [Pg.69]    [Pg.71]    [Pg.73]    [Pg.75]    [Pg.79]    [Pg.81]    [Pg.85]    [Pg.87]    [Pg.89]    [Pg.124]    [Pg.205]    [Pg.60]    [Pg.418]    [Pg.456]    [Pg.528]   
See also in sourсe #XX -- [ Pg.172 , Pg.173 , Pg.174 , Pg.175 , Pg.176 , Pg.177 , Pg.178 , Pg.179 , Pg.180 , Pg.181 ]



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