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Structure and activity of dispersed Co, Ni, or Mo sulfides for slurry phase hydrocracking of vacuum residue
- Source :
- Journal of Catalysis. 364:131-140
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- The effects of Co, Ni, or Mo precursors having different oil solubility and oxidation state on the slurry phase hydrocracking (HCK) of vacuum residue (VR) was investigated at 673 K and 9.5 MPa H2. X-ray diffraction and extended X-ray absorption fine structure spectroscopy were used to obtain structural properties of the dispersed catalyst. Under standard operating condition, the metal precursors were found to form nanoscaled dispersed particles of MoS2, Co9S8, and Ni3S2, with the following VR HCK performances in the order MoS2 > Co9S8 ≫ Ni3S2, based on the same metal loading of 0.113 mmol. Among the oil-soluble Mo precursors such as Mo-hexacarbonyl, -octoate, and -naphthenate, it was observed that Mo-octoate having an intermediate oxidation state forms the smallest particles of 5.8 nm in size and shows the best activity in the VR HCK.
- Subjects :
- Chemistry
02 engineering and technology
010402 general chemistry
021001 nanoscience & nanotechnology
01 natural sciences
Catalysis
0104 chemical sciences
Metal
Cracking
Residue (chemistry)
Chemical engineering
Oxidation state
visual_art
Slurry
visual_art.visual_art_medium
Physical and Theoretical Chemistry
Solubility
0210 nano-technology
Spectroscopy
Subjects
Details
- ISSN :
- 00219517
- Volume :
- 364
- Database :
- OpenAIRE
- Journal :
- Journal of Catalysis
- Accession number :
- edsair.doi...........11b5fcc2c2347f78f0778e5466790776