Octane 2,2,4-Trimethylpentane

Fig. 27. Iso-octane (2,2,4-trimethylpentane) breakthrough curves on a DOC core sample. Measured (points) and simulated (lines) data are shown for two temperatures.

Figure 3.10 Example of a phase diagram for a ternary system used to create a dynamic LLC system. Components Ethanol (EtOH), Acetonitrile (ACN) and Iso-octane (2,2,4-trimethylpentane TMP). I — V nodal lines. Circles compositions determined experimentally by titration (full circles) and GC (open circles). Figure taken from ref. [315]. Reprinted with permission.

Fig. 6. 21. Ignition delays as a function of compressed gas temperature for the normal alkanes, n-butane to n-heptane, i-octane (2,2,4-trimethylpentane) and toluene in stoichiometric proportions in air. The results were obtained in a rapid compression machine at a compressed gas density of 128 mol m (0.65-0.75 MPa). Ignition in the ntc and lower temperature range was not observed under these experimental conditions [50].

Cracking of n- octane/2,2,4- trimethylpentane Al-M A reaction usefixl for discriminating between larger pore microporous materials based on reactants selectivity ratio. 46... 

P G Smimiotis, E. Ruckenstein. Comparison of the Performance of ZSM-5, b-Zeolite, Y, USY and Their Composites in the Catalytic Cracking of n-Octane, 2,2,4-Trimethylpentane and 1-Octene. Industrial Engineering Chemistry Research, Vol. 33, 800-813, 1994. 

The standard for measuring octane was established in 1923. Normal heptane was assigned an octane number of zero, and iso-octane (2,2,4-trimethylpentane) was assigned an octane number of 100. The octane number of a hydrocarbon or hydrocarbon mixture is determined by comparing its antiknock qualities with various blends of n-heptane and iso-octane. Table 3 provides... 

Iso-octane (2,2,4-trimethylpentane) is a more commonly used nonpolar so vent than heptane. Due to its branched-chain nature, iso-octane usually has a higher solubility level in polar solvents than does n-heptane. The cost of LC-quality isooctane is typically less than that of n-heptane and more than that of hexane. For these reasons, iso-octane is fiequently the next alkane solvent of choice after hexane. 

Abbreviations Pent, pentane cPent, cyclopentane Hex, hexane cHex, cyclohexane Hept, heptane IMP, iso-octane, 2,2,4-trimethylpentane Dec, Decalin", decahydronaphthalene Benz, benzene Tol, toluene. 

---