iso-octane

iso-octane

A paraffin hydrocarbon fuel, defined as 2,2,4-trimethylpentane, which is used as a standard in the rating of fuels. This knock quality of fuel is expressed as a percentage by volume of iso-octane in a mixture with normal heptane that has the same knocking characteristics as the fuel under question. Fuel with an 87 octane rating is equivalent to a mixture of 87% iso-octane and 13% heptane.
References in periodicals archive ?
Due to plans to phase out MTBE in the US, Super Octanos in late 2000 began considering a shift of its 500,000 t/y of MTBE production to iso-octane.
It was created without the use of petroleum and is iso-octane free and burns with a cleaner, higher octane.
Fatty acid methyl esters were extracted with iso-octane.
The opposite is true of HDPE, where performance deteriorates with higher toluene and iso-octane concentrations.
HCCI engine tests have shown that using high-octane fuel, such as iso-octane or gasoline, and diesel-like compression ratios, HCCI engines can achieve diesel-like efficiencies and low NO emissions [12-14] with stable ignition timing.
After the iso-octane evaporated, the coupon was placed in a hot air oven for five minutes at 25 [degrees]C below the manufacturer's specified melt temperature.
Some MTBE plants will be shutdown and some will be converted to iso-octane or alkylation in order to consume the excess isobutylenes no longer consumed for MTBE.
Dalai's work is in replacing corrosive liquid acids with less corrosive solid acids in the production of iso-octane, a key ingredient of gasoline which increases efficiency and lowers the pollution produced.
The process selectively converts isobutylene to iso-octene or optionally iso-octane, which are high octane, high quality gasoline blendstocks that also offer benefits in addressing challenges with ethanol blending.
Another Alujain JV in Yanbu' is a 900,000 t/y iso-octane plant built with Noble Americas.
An 900,000 ton per annum Iso-Octane project in Saudi Arabia through
The list now includes ASTM Fuel B, 30% toluene/70% iso-octane, representing a normal gasoline without additives; ASTM Fuel C, 50% toluene/50% iso-octane, representing a gasoline with high aromatic content; ASTM Fuel D, 40% toluene/60% iso-octane, representing a medium high aromatic content, used mainly in Europe; M 25, 75% ASTM Fuel C/25% methanol representing a "worst case" gasoline containing methanol as oxygenate; FAM fuel, 50% toluene/30% iso-octane/15% di-isobutylene/5% ethanol, a European test fuel representing an aggressive gasoline; and M 15, 85% FAM fuel/15% methanol, a European test fuel representing a "worst case" gasoline containing methanol as oxygenate.