Big Chemical Encyclopedia

Chemical substances, components, reactions, process design ...

Articles Figures Tables About

Improve octane rating

Reducing side reactions does not always mean greatly improved octane ratings. Propylene alkylate was only slightly improved at the low temperature, because the hydrogen transfer reaction was inhibited along with undesirable side reactions. [Pg.63]

Other things equal, branched hydrocarbons have higher octane ratings than unbranched ones. —> Isomerization and aromatization are used to improve octane rating of gasoline Isomerization is used to convert straight chain hydrocarbons to branched ones ... [Pg.240]

Ethanol is used in a variety of fuel, solvent, and chemical applications in industry. Chemical applications have dropped sharply in the last 20 years as more direct routes to products, such as acetaldehyde, acetic acid, ethyl acetate, and ethyl chloride, which were formerly made from ethanol, came on stream. The automotive fuel component, as a component to improve octane rating, is anticipated to have the highest potential for growth. [Pg.653]

Trifluoromethanesultbnic acid Trifluoro-methanesulphonic acid. Catalyst and reactant increasing yields in polymerization of epoxies, styrenes, THF, in alkylation and acylation reactions improves octane rating used with nitric acid for higher yields of pharmaceuticals, explosives, dyes, and intermediates. Liquid mp = -40" bp = 162" d = 1.6960.3M Lancaster Synthesis Co. [Pg.644]

The obtainable dimers from oligomerization of propene and butene, such as hexenes and octenes are particularly useful for conversion by the well-known oxo alcohol process into the corresponding heptyl and nonyl alcohols which may be used in the production of plasticizers, lubricating oil additives, detergents, defoamers, and similar produets. Dimers of propene are even used to improve octane rating in gasoline. [Pg.278]

Oxygenates tetraethyl- and tetramethyl-lead are no longer used as additives to improve octane ratings, except in aviation gasoline. Today, ethers such as methyl tertiary butyl ether (MTBE), produced by conversion of olefins with methanol, are used to improve octane rating. [Pg.443]

Toluene is sometimes added to gasoline blends to improve octane rating. Much of the toluene that is used for this purpose may not even be isolated from the refinery streams. It is also a very common solvent for the coatings and adhesive industries. It is a common feedstock for explosives such as TNT. It is also a common feedstock to produce other chemical intermediates such as benzene, xylenes, nitrobenzene, and benzyl chloride. [Pg.521]

Reforming (Section 2 16) Step in oil refining in which the pro portion of aromatic and branched chain hydrocarbons in petroleum is increased so as to improve the octane rating of gasoline... [Pg.1292]

The normal paraffins produced are raw materials for the manufacture of biodegradable detergents, plasticizers, alcohols, and synthetic proteins. Removal of the / -paraffins upgrades gasoline by improving the octane rating. [Pg.457]

By the early 1930s, thermal cracking had achieved a fairly high level of operation. Both the Dubbs (UOP) and Tube-and-Tank (Jersey Standard) Processes represented the state of the art in the field. Between the end of World War I, when the Burton Process was still revolutionary, and the early 1930s, octane ratings of gasoline increased 36 percent. This improvement resulted from the existence of more advanced thermal plants and the increasing use of additives, espe-... [Pg.990]

Its addn at a level of 0.1—5.0% was found to improve the octane rating of diesel fuels (Ref 10) Cuprous Chloride Complex. For prepn see above. It is a red cryst solid, readily decompd into its components at 135—40° (Refs 4 13). X-ray diffraction showed that the azomethane mols lie betw the infinite folded sheets of the Cu(I) chloride (Ref 11). The complex is used in the prepn of highly pure samples of azomethane (Ref 7)... [Pg.85]

Trauzl Test. 21,.4% of TNT when pure (Ref 26) for mixts see below Uses. It does not gelatinize NC (Ref 15). It improves the octane rating of diesel fuels (Ref 26). It decreases the polymerization rate of methyl methacrylate (Ref 24), and styrene (Ref 23), but. does not inhibit the reaction. A review of its use as an oxidizer in rocket propints is given in Ref 33. TeNMe gives yellow to orange colors with olefins and aromatic compds. This is used as a diagnostic test for the presence of these groups in org analysis (Refs 6, 9, 16, 17 29)... [Pg.102]

The quality of gasoline is also improved by the addition of ethanol, which has an octane rating of 120. The use of ethanol helps to reduce the demand for petroleum. Unlike petroleum, ethanol is a renewable fuel that can be regenerated every year (see Box 6.2). [Pg.865]


See other pages where Improve octane rating is mentioned: [Pg.174]    [Pg.48]    [Pg.48]    [Pg.174]    [Pg.1256]    [Pg.36]    [Pg.926]    [Pg.212]    [Pg.548]    [Pg.490]    [Pg.191]    [Pg.174]    [Pg.48]    [Pg.48]    [Pg.174]    [Pg.1256]    [Pg.36]    [Pg.926]    [Pg.212]    [Pg.548]    [Pg.490]    [Pg.191]    [Pg.457]    [Pg.458]    [Pg.481]    [Pg.549]    [Pg.49]    [Pg.60]    [Pg.865]    [Pg.113]    [Pg.95]    [Pg.105]    [Pg.84]    [Pg.24]    [Pg.518]    [Pg.96]    [Pg.282]    [Pg.194]    [Pg.140]    [Pg.16]    [Pg.8]    [Pg.538]    [Pg.521]    [Pg.232]    [Pg.111]    [Pg.120]   
See also in sourсe #XX -- [ Pg.521 ]




SEARCH



Octane improvement

Octane ratings

© 2024 chempedia.info