Physiochemical Properties of Hydrodenitrification and Hydrodesulphurization Inhibiting Compounds with 1-Ethyl-3-Methylimidazolium Ethylsulphate at T = (298.15 to 323.15) K and 𝑝=1 Bar

Table 5

Surface tension 𝜎 and refractive index 𝑛𝐷 for pure compounds of the binary system studied in this work at 298.15 K and atmospheric pressure.

	σ/mN·m^−1		nD
	Present study	Literature value	Present study	Literature value
[emim][EtSO4]	48.4	46.96d	1.4771	1.4794d
Pyridine (PY)	37.5	NA	1.5013	NA
Pyrrole (PYRR)	41.7	NA	1.4884	NA
Quinoline (QU)	46.5	NA	1.4997	NA
Indoline (INDO)	32.6	NA	1.5867	NA
Thiophene (TS)	31.7	NA	1.5271	1.5255e,f
Water	72.1	71.1d	1.3357	NA

dReference [18]. eReference [30]. fReference [31]. NA: not available.