Zeolite-Containing Catalysts in Alkylation Processes

Huseynova, Galina; Мuхtаrоvа, Gulbeniz; Aliyeva, Nushaba; Gаsimоvа, Gular; Rаshidоvа, Sanubar

doi:10.21926/cr.2203019

Cited by 3 publications

(2 citation statements)

References 33 publications

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“…Alkylation of oil fractions with olefins has primarily been studied on homogeneous systems containing AlCl 3 . For the alkylation of oil fractions with catalytic cracking gases, we have previously examined industrial catalysts such as Seokar 2, Seokar 600, and Omnikat 210P [1][2][3][4][5][6]. The alkylation of oil fractions aims to enhance their viscosity-temperature properties (increase in viscosity index).…”

Section: Introductionmentioning

confidence: 99%

“…In prior studies on alkylation processes using Zeocar 600 and Omnikat 210P catalysts, turbine oil distillates with kinematic viscosities at 40°C of 27.8 and 76.4 mm 2 /s and viscosity indices of 32 and 55, respectively, were used as distillate oil fractions [1][2][3][4][5][6]. A low-viscosity industrial oil fraction with a kinematic viscosity at 40°C of 9.85 mm 2 /s and a viscosity index 79 was also used.…”

Section: Introductionmentioning

confidence: 99%

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Research and Application of Modified ZSM-5 for the Process of Alkylation of Oil Distillate Fractions

Huseynova,

Aliyeva,

Gаsimоvа

2023

Catal Res

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In the oil distillate fraction alkylation process, a modified Zr zeolite ZSM-5 was obtained and studied. The modification was executed using a method that impregnated ZSM-5 with a 5% solution of ZrOCl2∙6H2O. X-ray diffraction studies were conducted on zeolite ZSM-5, zirconyl chloride modifier ZrOCl2∙6H2O, and modified zeolite ZSM-5-ZrO2, which was calcined at temperatures of 200, 400, and 550°C. The results revealed that the phase composition of modified ZSM-5-ZrO2 zeolite samples varied depending on the calcination temperature. It was determined that only at a temperature of 550°C did the modified ZSM-5 catalyst contain three phases belonging to ZrSi24O50, ZrO2, and ZSM-5. The emergence of the ZrO2 phase occurred at a calcination temperature of 550°C. An increase in temperature from 200 to 550°C facilitated the transition of the amorphous phase to the crystalline phase. The crystal structure of the ZSM-5-ZrO2 catalyst, calcined at 550°C, contributed to a rise in its activity. Consequently, during alkylation with catalytic cracking gases, the viscosity-temperature properties of the T-30 turbine oil distillate fraction significantly improved (the viscosity index increased from 49.9 to 137). An increase in zeolite ZSM-5 activity was demonstratd due to the introduction of zirconium and an elevated calcination temperature to 550°C.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Research and Application of Modified ZSM-5 for the Process of Alkylation of Oil Distillate Fractions

Huseynova,

Aliyeva,

Gаsimоvа

2023

Catal Res

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A Review of Computational Fluid Dynamics Modeling for Isobutane Alkylation: Process Optimization, Reactor Design, and Future Perspectives

Noorpoor,

Rahmani

2024

Energy Fuels

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

Al-Sultani,

Al-Shathr,

Al-Zaidi

2024

Reactions

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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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Zeolite-Containing Catalysts in Alkylation Processes

Cited by 3 publications

References 33 publications

Research and Application of Modified ZSM-5 for the Process of Alkylation of Oil Distillate Fractions

Research and Application of Modified ZSM-5 for the Process of Alkylation of Oil Distillate Fractions

A Review of Computational Fluid Dynamics Modeling for Isobutane Alkylation: Process Optimization, Reactor Design, and Future Perspectives

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

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