N-Tetradecane

The following applications include the removal of straight-chain from branched-chain or cyclic molecules. For example, type 5A sieves will adsorb n-butyl alcohol but not its branched-chain isomers. Similarly, it separates n-tetradecane from benzene, or n-heptane from methylcyclohexane. 

An example for a partially known ternary phase diagram is the sodium octane 1 -sulfonate/ 1-decanol/water system [61]. Figure 34 shows the isotropic areas L, and L2 for the water-rich surfactant phase with solubilized alcohol and for the solvent-rich surfactant phase with solubilized water, respectively. Furthermore, the lamellar neat phase D and the anisotropic hexagonal middle phase E are indicated (for systematics, cf. Ref. 62). For the quaternary sodium octane 1-sulfonate (A)/l-butanol (B)/n-tetradecane (0)/water (W) system, the tricritical point which characterizes the transition of three coexisting phases into one liquid phase is at 40.1°C A, 0.042 (mass parts) B, 0.958 (A + B = 56 wt %) O, 0.54 W, 0.46 [63]. For both the binary phase equilibrium dodecane... 

Noda, K. I. Watanabe, K., and Maruhashi, K., Isolation of the Pseudomonas aeruginosa gene affecting uptake of dibenzothiophene in n-tetradecane. Journal of Bioscience and Bioengineering, 2003. 95(5) pp. 504—511. 

Reported vapor pressures of n- tetradecane at various temperatures and the coefficients for the vapor pressure ... 

Logarithm of vapor pressure versus reciprocal temperature for n-tetradecane. 

Example 2 A small quantity of residual n-tetradecane (C14H30) is in the piston bore of a piston-type compressor. If air at ambient conditions is compressed to 570 psia and 420 F, will the n-tetradecane undergo autoignition ... 

Inspection of the table discloses that the autoignition temperature of n-tetradecane is 392 F. Since the temperature of 420 F at the end of the compression exceeds the autoignition temperature, autoignition of the n-tetradecane will occur. This is shown below ... 

Compressor temp, of 420 F > Autoignition temp, of 392 F Autoianition of n-tetradecane will occur. 

Unlike the gasoline Molex process that employs a iso-butane and n-butane desorbent mixture, the MaxEne process employs a heavy desorbent system. A heavy desorbent system means that the bottom product from both the Sorbex extract and raffinate frachonation columns is desorbent while the feed components are recovered as overhead products. In the MaxEne process case, heavy normal paraffin such as n-dodecane is employed as the desorbent though desorbents as light as n-decane and as heavy as n-tetradecane are possible candidates too. 

After 15 days of degradation only low amounts of degradation products have evolved, the amount being lower than the detection limit of the GC system. After 17 weeks, however, 2-butanol, propionic acid, 1-pentanol, but3nic acid, valeric acid and caproic acid were detected in pH 6 water fraction. After another 20 weeks several alkanes could also be detected n-octane, n-nonane, n-decane, n-dodecane, n-tridecane and n-tetradecane (13). 

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