Residue fluid catalytic cracking: A review on the mitigation strategies of metal poisoning of RFCC catalyst using metal passivators/traps

Adanenche, D.E.; Aliyu, A.; Atta, A.Y.; El-Yakubu, B.J.

doi:10.1016/j.fuel.2023.127894

Cited by 12 publications

(2 citation statements)

References 145 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…[7] Others are cyclohexane conversion, [8] and cumene cracking. [7,9] The molecular hydrogen adsorption on metal sites forms hydrogen atoms, which diffuse across the surface to Lewis acid sites via surface diffusion. Here, the hydrogen transforms into a proton, generating protonic acid sites.…”

Section: Introductionmentioning

confidence: 99%

“…Alkane isomerization is one of the processes that form active sites due to the acid sites that result in the spillover of hydrogen [7] . Others are cyclohexane conversion, [8] and cumene cracking [7,9] . The molecular hydrogen adsorption on metal sites forms hydrogen atoms, which diffuse across the surface to Lewis acid sites via surface diffusion.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Role of Iridium in n‐Pentane Isomerization, Cyclohexane Ring Opening, and Cumene Cracking Over Ir/Pt‐HZSM5

Setiabudi,

Abdulkadir,

Jalil

2024

ChemistrySelect

View full text Add to dashboard Cite

Producing aromatic compounds sustainably from renewable sources is essential to reduce reliance on fossil fuels. This study aims to elucidate the multifunctional behavior of Ir on Pt‐HZSM5, and their influence on the catalytic activity of n‐pentane isomerization, cyclohexane ring opening, and cumene cracking. The results showed that Ir created another active and Lewis's acid site, which increased the acid sites (H+), thus enhancing the catalytic performance of Pt‐HZSM5. Moreover, Ir inhibited the atomic hydrogen bonding interaction and hence improved the main reaction and suppressed the side reaction. Therefore, the mechanism of the main reaction over Ir/Pt‐HZSM5 can be described as the following steps: (i) Interaction of reactant with H+; (ii) Reaction of carbenium ion intermediate; and (iii) Interaction of a carbenium ion intermediate with H−, followed by desorption. This study provides a comprehensive understanding of the intricate catalytic pathways, offering insights into the design of efficient multifunctional catalysts for various petrochemical applications.

show abstract