Assessment of the Oxidative Desulfurization of Middle Distillate Surrogate Fuels with Spectroscopic Techniques

Table 4

Sulfur compounds contained in each mixture, solvent to feed ratio, sulfur content of the oxidized and extracted products, and mass yields using acetonitrile and methanol.

Mixture	Sulfur compounds	Sulfur content (% w/w) (after oxidation)	Solvent to feed ratio	Acetonitrile		Methanol
				Yield (% w/w)	Sulfur content (% w/w)	Yield (% w/w)	Sulfur content (% w/w)
1	Tert-butyl disulfide, benzothiophene	0.124	1.0	94	0.056	97	0.073
			1.5	94	0.048	97	0.062
			2.0	95	0.042	96	0.056
2	1-dodecanethiol, tert-butyl disulfide	0.267	1.0	93	0.219	98	0.225
			1.5	93	0.209	94	0.216
			2.0	92	0.205	95	0.213
3	1-dodecanethiol, n-butyl sulfide	0.081	1.0	93	0.063	94	0.066
			1.5	88	0.057	93	0.062
			2.0	87	0.053	91	0.057
4	Ν-butyl sulfide, tert-butyl disulfide	0.019	1.0	95	0.010	97	0.009
			1.5	95	0.009	95	0.009
			2.0	92	0.009	95	0.008
5	1-dodecanethiol, benzothiophene	0.108	1.0	90	0.061	92	0.071
			1.5	96	0.054	91	0.063
			2.0	98	0.050	91	0.058
6	1-dodecanethiol, dibenzothiophene	0.085	1.0	97	0.063	96	0.066
			1.5	97	0.059	95	0.062
			2.0	97	0.054	97	0.058
7	Tert-butyl disulfide, dibenzothiophene	0.046	1.0	96	0.027	94	0.031
			1.5	95	0.024	95	0.028
			2.0	92	0.022	93	0.026
8	Ν-butyl sulfide, benzothiophene, dibenzothiophene	0.028	1.0	91	0.006	94	0.006
			1.5	92	0.005	93	0.005
			2.0	89	0.005	94	0.005
9	1-dodecanethiol, n-butyl sulfide, tert-butyl disulfide, benzothiophene, dibenzothiophene	0.069	1.0	92	0.036	95	0.039
			1.5	93	0.032	93	0.039
			2.0	93	0.030	94	0.035
10	1-dodecanethiol, benzothiophene, dibenzothiophene	0.026	1.0	94	0.013	94	0.015
			1.5	92	0.012	94	0.014
			2.0	93	0.011	92	0.013
11	1-dodecanethiol, n-butyl sulfide, tert-butyl disulfide	0.129	1.0	95	0.091	94	0.096
			1.5	94	0.080	94	0.080
			2.0	95	0.071	95	0.087