Simulated regeneration of an industrial CoMo/γ-Al2O3 catalyst. Influence of the regeneration temperature

On the hydrodesulfurization of FCC gasoline: a review

“…Arteaga et al reported a study on the deactivation and regeneration of an industrial CoMo/Al 2 O 3 catalyst [154,155]. The catalyst ageing was obtained by coke deposition from either buta-1,3-diene or methylcyclopentane.…”

Regeneration of Hydrotreating and FCC Catalysts

“…Regeneration of the catalyst to remove carbon deposits can lead to redistribution of Mo on the catalyst site, particularly if steam is present. Arteaga et al (1987) subjected sulfided commercial COMOcatalyst to regenerating conditions(5Y002 and 6.8'XO HZOin Nz) at regeneration temperatures of 400"C to 700"C, and then reactivated the catalyst. They showed that in the presence of steam the hydrogenation and hydrodesulfbrization activity of the catalyst following regeneration decreased significantly compared to similar experiments performed in the absence of steam.…”

Variation in Structural Characteristics of a Hydrotreatment Catalyst with Deactivation/Regeneration Cycles

“…The importance of studying the regeneration of these catalysts became obvious from the work of Bogdanor and Rase (1986) and Texeira da Silva et al (1994). Additionally, in the study of their structural characteristic variations with each operation cycle, Ramaswamy et al (1985) and Arteaga et al (1986Arteaga et al ( , 1987, for CoMo/ Al 2 O 3 catalysts, and Jime ´nez- Mateos et al (1993) and Garcı ´a-Ochoa and Santos (1996), for NiMo/Al 2 O 3 catalysts, found that changes occur in both the support and the active agent of the catalyst during the reaction/ regeneration cycles and in some cases considerable reductions in diffusivity appear.…”