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. 2023 Oct 31;8(45):42522–42539. doi: 10.1021/acsomega.3c05193

Table 2. Experimental Results to Obtain the Optimal Combination of the Oxidizer Mixture.

      oxidizer blend
  
run synthetic samples (100 mL) initial concentration of sulfur (ppm) oxidant (40 mol %) promoter (37.5 mol %) catalyst (15.5 wt %) SRE (%)
1 CG1 3000 hydrogen peroxide     43.42
2 CG1 3000 sodium peroxide     31.21
3 CG1 3000 potassium superoxide     43.01
4 CG2 3000 hydrogen peroxide     35.71
5 CG2 3000 sodium peroxide     27.91
6 CG2 3000 potassium superoxide     32.02
7 CG3 3000 hydrogen peroxide     36.51
8 CG3 3000 sodium peroxide     29.71
9 CG3 3000 potassium superoxide     32.01
10 CG1 3000 hydrogen peroxide formic acid   77.96
11 CG1 3000 hydrogen peroxide acetic acid   76.02
12 CG2 3000 hydrogen peroxide formic acid   68.57
13 CG2 3000 hydrogen peroxide acetic acid   66.97
14 CG3 3000 hydrogen peroxide formic acid   61.73
15 CG3 3000 hydrogen peroxide acetic acid   60.87
16 CG1 3000 hydrogen peroxide formic acid phosphotungstic acid 98.31
17 CG1 3000 hydrogen peroxide formic acid ferrous(II) sulfate 97.12
18 CG1 3000 hydrogen peroxide formic acid zirconium dioxide 80.47
19 CG1 3000 hydrogen peroxide formic acid vanadium pentoxide 87.96
20 CG1 3000 hydrogen peroxide formic acid aluminum oxide γ 93.56
21 CG1 3000 hydrogen peroxide formic acid copper(II) oxid 95.26
22 CG2 3000 hydrogen peroxide formic acid phosphotungstic acid 97.02
23 CG2 3000 hydrogen peroxide formic acid ferrous(II) sulfate 96.21
24 CG2 3000 hydrogen peroxide formic acid zirconium dioxide 68.08
25 CG2 3000 hydrogen peroxide formic acid vanadium pentoxide 83.05
26 CG2 3000 hydrogen peroxide formic acid aluminum oxide γ 91.78
27 CG2 3000 hydrogen peroxide formic acid copper(II) oxide 94.06
28 CG3 3000 hydrogen peroxide formic acid phosphotungstic acid 97.21
29 CG3 3000 hydrogen peroxide formic acid ferrous(II) sulfate 95.97
30 CG3 3000 hydrogen peroxide formic acid zirconium dioxide 72.36
31 CG3 3000 hydrogen peroxide formic acid vanadium pentoxide 83.31
32 CG3 3000 hydrogen peroxide formic acid aluminum oxide γ 91.99
33 CG3 3000 hydrogen peroxide formic acid copper(II) oxide 94.71
34 CG1 3000 hydrogen peroxide formic acid phosphotungstic acid 99.96
35 CG1 3000 hydrogen peroxide formic acid phosphotungstic acid 99.17
36 CG1 3000 hydrogen peroxide formic acid phosphotungstic acid 98.61
37 CG2 3000 hydrogen peroxide formic acid phosphotungstic acid 98.77
38 CG2 3000 hydrogen peroxide formic acid phosphotungstic acid 98.51
39 CG2 3000 hydrogen peroxide formic acid phosphotungstic acid 97.18
40 CG3 3000 hydrogen peroxide formic acid phosphotungstic acid 99.84
41 CG3 3000 hydrogen peroxide formic acid phosphotungstic acid 98.99
42 CG3 3000 hydrogen peroxide formic acid phosphotungstic acid 97.53