Citation: Hui Yuan, Guang-Tong Xu, Hui-Feng Li, Li-Jun Lu. Study of oxidic and sulfided selective hydrodesulfurization catalysts for gasoline using Raman spectroscopy[J]. Chinese Chemical Letters, ;2013, 24(12): 1041-1044. shu

Study of oxidic and sulfided selective hydrodesulfurization catalysts for gasoline using Raman spectroscopy

Hui Yuan ^a ,
^b,c ,
Guang-Tong Xu ^a,, ,
Hui-Feng Li ^a ,
Li-Jun Lu ^a

1.
a Research Institute of Petroleum Processing, SINOPEC, Beijing 100083, China;
2.
b The Institute for Chemical Physics, Beijing Institute of Technology, Beijing 100081, China;
3.
c Inner Mongolia Medical College, Hohhot 010059, China

Corresponding author: Guang-Tong Xu,
Received Date: 31 May 2013
Available Online: 14 June 2013

A series of CoMo/Al₂O₃ catalysts for selective hydrodesulfurization (HDS) of gasoline were studied with Raman spectroscopy, a powerfulmethod that creates specific signals for the states and the distributions of oxidic precursors and sulfided active phases. The higher the Mo and Co, the lower the tetrahedrally coordinated molybdate, and the higher the polymolybdate. But the amount of polymolybdate decreased when CoMoO₄ appeared. Cobalt-promoted polymolybdate was the precursor, and its relative content correlated well with the HDS selectivity. For sulfided catalysts, adding the cobalt-promoter led to local distortion-disorder of the MoS2 structure and the formation of a CoMoS phase. This method can provide important information for designing new industrial selective-HDS catalysts.
- Raman spectroscopy,
- Co-Mo/Al₂O₃,
- HDS selectivity
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