Investigation of CoNiMo/Al2O3 catalysts: Relationship between H2S adsorption and HDS activity |
| |
| Authors: | Takehide Homma Michaël Echard Jacques Leglise |
| |
| Affiliation: | Laboratoire Catalyse et Spectrochimie, ENSICAEN, Caen 14050, France |
| |
| Abstract: | Sulfidation of trimetallic CoNiMo/Al2O3 catalysts was studied by thermogravimetry at 400 °C under flow and pressure conditions. Results were compared with those obtained on prepared and industrial CoMo/Al2O3 and NiMo/Al2O3 catalysts. The amount of sorbed H2S on the sulfided solids was measured at 300 °C in the H2S pressure range 0–3.5 MPa at constant H2 pressure (3.8 MPa). The adsorption isotherms were simulated using a model featuring dissociated adsorption of H2S on supported metal sulfides and bare alumina. The amount of sulfur-vacancy sites could thus be determined under conditions close to industrial practice. A relationship with activity results for thiophene HDS and benzene hydrogenation was sought for. |
| |
| Keywords: | Hydrotreating catalysts H2S adsorption under pressure and flow conditions Catalyst sulfidation Thermogravimetric analysis Sulfur-vacancy measurement Relationship with activity |
| 本文献已被 ScienceDirect 等数据库收录！ |
