N-Propyl benzoate

The following liquids may be used (boiling points are given in parentheses) — chlorobenzene (132-3°) bromobenzene (155°) p cymene (176°) o-dichloro-benzene (180°) aniline (184°) methyl benzoate (200°) teti-alin (207°) ethyl benzoate (212°) 1 2 4-trichlorobenzene (213°) iaopropyl benzoate (218°) methyl salicylate (223°) n-propyl benzoate (231°) diethyleneglycol (244°) n-butyl benzoate (250°) diphenyl (255°) diphenyl ether (259°) dimethyl phth ate (282°) diethyl phthalate (296°) diphenylamine (302°) benzophenone (305)° benzyl benzoate (316°). 

Twenty liters of liquid n-propyl benzoate (QH5CO2C3H7, SG = 1.021) and 15 liters of liquid benzene are mixed and heated from 25°C to 75°C. Calculate the required heat input (kJ), using Kopp s rule when necessary. State all assumptions you make. 

Figure 16.14 Comparison between calculated and experimental band profiles for a 1 1 mixture of phenetole and n-propyl benzoate on a Symmetry-Cig column. Calculations made with the TD model. Solid symbols ( ), experimental data solid line, calculated profile. The empty triangular symbols show the single-component band profile of n-propyl benzoate, for the sake of comparison. The inset shows the corresponding calculated single- component profiles. Cl = 9.28 g/dm and Cx = 9.28 g/dm tj j = 60 s. Reprinted from W. Pi tkowski, D. Antos, F. Gritti, G. Guiochon,. Chromatogr., 1003 (2003) 73 (Fig. 7).

Piqtkowski el al. measured the single-component and the competitive equilibrium isotherms of phenetole (ethoxy-benzene) and n-propyl benzoate on a 150 x 3.9 mm S3onmetry -Cig (endcapped) column (Waters), using a methanol/water (65 35, v/v) as the mobile phase [26]. The adsorption equilibrium data of the single-component systems were acquired by frontal analysis. For both compoimds. 

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