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Reactivation of CoMo/Al2O3 Hydrotreating Catalysts by Citric Acid.
- Source :
-
Catalysis Letters . May2018, Vol. 148 Issue 5, p1525-1534. 10p. - Publication Year :
- 2018
-
Abstract
- Abstract: Commercial liquid-phase-sulfided type II CoMo/Al2O3 catalyst was reactivated after commercial operation and oxidative regeneration. For this purpose, the use of citric acid (CA) that reactivates a regenerated CoMo/Al2O3 catalyst was studied. The study of the reactivated catalyst was carried out by means of UV-DRS, FTIR, Raman spectroscopy, XRD, XPS, and HTREM. The catalytic activity was estimated in the HDS of straight-run gasoil (SRGO). It was shown that the treatment of the catalyst with CA leads to the formation of a Co-Mo complex compound and significantly reduces the proportion of β-CoMoO4 and MoO3 in the catalyst. Eventually, this leads to the formation of CoMoS phase type II in a higher proportion enhancing the HDS catalytic properties.Graphical Abstract: <graphic></graphic> [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 1011372X
- Volume :
- 148
- Issue :
- 5
- Database :
- Academic Search Index
- Journal :
- Catalysis Letters
- Publication Type :
- Academic Journal
- Accession number :
- 129256047
- Full Text :
- https://doi.org/10.1007/s10562-018-2365-9