Release Time:2019-03-09  Hits:

Indexed by: Journal Article

Date of Publication: 2013-12-05

Journal: CATALYSIS COMMUNICATIONS

Included Journals: Scopus、EI、SCIE

Volume: 42

Page Number: 6-9

ISSN: 1566-7367

Key Words: Oxidative desulfurization; Supported Mo-P oxides; Dibenzothiophene; Diesel

Abstract: 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 P-31-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. (C) 2013 Elsevier B.V. All rights reserved.