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Aromatic-free gasoline

Although up to a ten-fold increase of PAH output may be obseirved if aromatic-free gasoline is compared with e.g. gasoline composed of 0% aromatics, the increase in praxi may be estimated to be about two- or three-fold only, since gasoline normally used already contains aromatic compounds. It is, however, remarkable that the increase is different for various PAH (benzo(ghi)pery-lene and coronene 3fold benzo(e)- and (a)pyrene, pery-lene, and the benzofluoranthenes 5- fold fluoranthene, pyrene, chrysene, and cyclopenta(cd)pyrene lOfold) (10). [Pg.109]

Isomeri2ation of straight-chain hydrocarbons is of particular importance for lead-free gasoline. Addition of high octane aromatic hydrocarbons or olefins is questionable based on environmental considerations (77). An efficient octane enhancing additive is methyl tert-huty ether (MTBE). [Pg.556]

Determination of aromatic content of olefin-free gasoline by silica gel adsorption (ASTM D936)... [Pg.42]

Hydrocracked gasoline Alkylate gasoline Relatively olefin-free, low aromatic cracked gasoline blendstock. Composed of C and C8branched hydrocarbons this is a high-octane-number blending stock with MON values ranging from approximately 87 to 95 and RON values from 94 to 100. [Pg.40]

Remarkable increases in the aromatics content of gasolines and the octane number were obtained with synthetic-aluminum-silicate-supported catalysts (43), as shown in Table XXI. The experiments were made at 250 atm. pressure with petroleum gas oil of 0.846 sp. gr. and a boiling range of 187° to 330°C. Temperatures around 400°C. were used and were adjusted to obtain approximately the same conversion for both catalysts. The silicate catalyst is less active. The high aromatics content obtained with the aluminum silicate catalyst is especially evident in the higher fractions. The amount of branched-chain paraffin hydrocarbons is not greatly different, as shown by the octane number of the aromatic free fractions, used as an index. [Pg.283]

Cleaner, more environmentally acceptable products, e.g. green gasoline (lead-and aromatics-free)... [Pg.23]

The picture we see now is that of new lead-free fuels having lower aromatics content but containing a variety of oxygenates. It is thus likely that the additives entering into the composition of gasoline will be also modified. [Pg.346]

Normal-, normal, standard, -bedingungen, /.pi. normal conditions standard specifications. -benzin, n. a special gasoline free from aromatics, -druck, m. normal pressure standard pressure. [Pg.321]

The olefin content of the gasoline pool has decreased from 19% on a leaded basis to only 9% on a lead free basis. Aromatics, however, have increased from 21 to 42%, respectively, and are as high as 51% in the premium gasoline. [Pg.105]


See other pages where Aromatic-free gasoline is mentioned: [Pg.267]    [Pg.287]    [Pg.219]    [Pg.271]    [Pg.267]    [Pg.287]    [Pg.219]    [Pg.271]    [Pg.459]    [Pg.158]    [Pg.745]    [Pg.101]    [Pg.104]    [Pg.107]    [Pg.110]    [Pg.84]    [Pg.243]    [Pg.353]    [Pg.410]    [Pg.140]    [Pg.36]    [Pg.303]    [Pg.95]    [Pg.796]    [Pg.301]    [Pg.190]    [Pg.257]    [Pg.410]    [Pg.365]    [Pg.93]    [Pg.66]    [Pg.95]    [Pg.253]    [Pg.117]    [Pg.229]    [Pg.508]    [Pg.65]    [Pg.276]    [Pg.53]    [Pg.195]    [Pg.387]    [Pg.50]    [Pg.365]    [Pg.105]   
See also in sourсe #XX -- [ Pg.101 ]




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Gasoline aromatics

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