Elucidating the deactivation mechanism of beta zeolite catalyzed linear alkylbenzene production with oxygenated organic compound contaminated feedstocks

Xing, Shiyong; Liu, Xiaofei; Cui, Yan; Zhao, Yuehua; Chen, Ziheng; Xiang, Sigui; Han, Minghan

doi:10.1039/d4ra00787e

RSC Adv.

2024

DOI: 10.1039/d4ra00787e

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Elucidating the deactivation mechanism of beta zeolite catalyzed linear alkylbenzene production with oxygenated organic compound contaminated feedstocks

Shiyong Xing,

Xiaofei Liu,

Yan Cui

et al.

Abstract: Oxygenated organic compounds are detrimental to the zeolite catalyzed linear alkylbenzene production, which is mainly due to their firm adsorption on the acid sites.

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Aromatics Alkylated with Olefins Utilizing Zeolites as Heterogeneous Catalysts: A Review

Al-Sultani,

Al-Shathr,

Al-Zaidi

2024

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The alkylation reaction of aromatic compounds gains considerable attention because of its wide application in bulk and fine chemical production. Aromatics alkylated with olefins is a well-known process, particularly for linear alkylbenzene, phenyloctanes, and heptyltoluene production. As octane boosters and precursors for various petrochemical and bulk chemical products, a wide range of alkylated compounds are in high demand. Numerous unique structures have been proposed in addition to the usual zeolites (Y and beta) utilized in alkylation procedures. The inevitable deactivation of industrial catalysts over time on stream, which is followed by a decrease in catalytic activity and product selectivity, is one of their disadvantages. Therefore, careful consideration of catalyst deactivation regarding the setup and functioning of the process of catalysis is necessary. Although a lot of work has been carried out to date to prevent coke and increase catalyst lifespan, deactivation of the catalyst is still unavoidable. Coke deposition can lead to catalyst deactivation in industrial catalytic processes by obstructing pores and/or covering acid sites. It is very desirable to regenerate inactive catalysts in order to remove the coke and restore catalytic activity at the same time. Depending on the kind of catalyst, the deactivation processes, and the regeneration settings, each regeneration approach has pros and cons. In this comprehensive study, the focus was on discussing the reaction mechanism of 1-octene isomerization and toluene alkylation as an example of isomerization and alkylation reactions that occur simultaneously, shedding light in detail on the catalysts used for this type of complex reaction, taking into account the challenges facing the catalyst deactivation and reactivation procedures.

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Aromatics Alkylated with Olefins Utilizing Zeolites as Heterogeneous Catalysts: A Review

Al-Sultani,

Al-Shathr,

Al-Zaidi

2024

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show abstract

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Elucidating the deactivation mechanism of beta zeolite catalyzed linear alkylbenzene production with oxygenated organic compound contaminated feedstocks

Abstract: Oxygenated organic compounds are detrimental to the zeolite catalyzed linear alkylbenzene production, which is mainly due to their firm adsorption on the acid sites.

Cited by 1 publication

References 63 publications

Aromatics Alkylated with Olefins Utilizing Zeolites as Heterogeneous Catalysts: A Review

Aromatics Alkylated with Olefins Utilizing Zeolites as Heterogeneous Catalysts: A Review

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