Influence of arsenic on light cycle oil hydrodesulfurization over a CoMo catalyst
| Autor: | Susana Pinto-Castilla, Myloa Morgado-Vargas, Paulino Betancourt, Mildred Rodríguez |
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| Rok vydání: | 2020 |
| Předmět: |
inorganic chemicals
010405 organic chemistry Chemistry Inorganic chemistry chemistry.chemical_element 010402 general chemistry 01 natural sciences Catalysis 0104 chemical sciences Light Cycle High pressure Phase (matter) Physical and Theoretical Chemistry Selectivity Hydrodesulfurization Cobalt Arsenic |
| Zdroj: | Reaction Kinetics, Mechanisms and Catalysis. 131:199-211 |
| ISSN: | 1878-5204 1878-5190 |
| Popis: | Samples of a commercial hydrotreating catalyst with different initial arsenic content were used in the study light cycle oil (LCO) feed in a hydrotreating unit operating at high pressure (350 °C, 3 MPa) to evaluate the conversion and selectivity of the catalyst in the presence of arsenic. It was determined that arsenic in the catalyst modifies the textural properties and has the strongest influence on the conversion of the HDS reaction. For the first time, evidence is provided that the arsenic replaces cobalt in CoMoS phase. The incorporation of As is proposed to occur in “edge” sites of the molybdenum sulfide disfavoring the C–S cleavage during the HDS reaction, while hydrogenation sites would be favored. |
| Databáze: | OpenAIRE |
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