| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 49778 | Catalysis Communications | 2013 | 4 Pages |
•P-modified MoO3/SiO2 showed enhanced catalytic performance in the oxidation of DBT.•The addition of P suppressed the leaching of Mo species.•The active phase owned a Mo-O-P connectivity similar to that in H3PMo12O40.
Phosphorous-modified MoO3/SiO2 catalysts with various P/Mo molar ratios (MoPxO/SiO2, x = 0.3 − 3.0) were prepared by co-impregnation and compared with MoO3/SiO2 in the oxidation of dibenzothiophene by cumene hydroperoxide. The addition of P significantly enhanced the catalytic performance, and MoP1.0O/SiO2 exhibited the highest oxidation activity. XRD characterization indicated that the active phase of MoP1.0O/SiO2 was amorphous, whereas 31P-NMR measurements revealed that MoP1.0O/SiO2 had a similar connectivity of Mo-O-P to H3PMo12O40. The total sulfur of a hydrotreated diesel was reduced from 298 to 5 ppmw by oxidation with CHP and subsequent dimethylformamide extraction.
Graphical abstractFigure optionsDownload full-size imageDownload as PowerPoint slide
