Mechanism of propane formation during n-butane aromatization over ZSM-5 zeolite

Wang, Zijian; Ma, Aiyuan; Zhang, Yu; Qu, Yakun; Wang, Jieguang

doi:10.1007/s11144-021-02080-y

Cited by 1 publication

(1 citation statement)

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“…Toward the building blocks of value-added chemicals, the production of aromatics such as benzene, toluene, and xylene (BTX) from propane is more lucrative and also can expand the application of propane. In recent years, the aromatization of light hydrocarbons, as an alternative route to traditional naphtha-based production of aromatics, has been developed and eased the tension of the traditional route, which has attracted increasing attention in both academia and industry. − …”

Section: Introductionmentioning

confidence: 99%

Mechanistic Insight into the Promotional Effect of CO₂ on Propane Aromatization over Zn/ZSM-5

Fan

Nie

Song

et al. 2022

Ind. Eng. Chem. Res.

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ZSM-5 zeolite modified by zinc is a promising catalyst for light alkane aromatization. CO2-assisted oxidative dehydrogenation and aromatization of propane can be achieved over Zn/ZSM-5, but the aromatization pathways and the role of CO2 remain to be clarified. With density functional theory calculations, this work investigates the reaction networks and key steps in propane aromatization over Zn/ZSM-5, the promotional role of CO2 in the consumption of H2 and the removal of carbon deposits, as well as the rate-limiting steps in the conversion of propane to aromatics. The calculation results demonstrate that Zn-Lewis acid sites play a vital role in propane dehydrogenation, while the subsequent propene aromatization proceeds under the synergetic action of both Brønsted and Zn-Lewis acid sites. Due to the high barrier step of CO2 activation involved in the reverse Boudouard reaction over Zn/ZSM-5, we identify that introducing a second metal component such as Pt or Cu into Zn/ZSM-5 can promote the removal of carbon deposits, thus leading to the enhanced catalyst stability and more active sites for aromatization.

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Section: Introductionmentioning

confidence: 99%

Mechanistic Insight into the Promotional Effect of CO₂ on Propane Aromatization over Zn/ZSM-5

Fan

Nie

Song

et al. 2022

Ind. Eng. Chem. Res.

View full text Add to dashboard Cite

show abstract

Mechanism of propane formation during n-butane aromatization over ZSM-5 zeolite

Cited by 1 publication

References 48 publications

Mechanistic Insight into the Promotional Effect of CO₂ on Propane Aromatization over Zn/ZSM-5

Mechanistic Insight into the Promotional Effect of CO₂ on Propane Aromatization over Zn/ZSM-5

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Mechanism of propane formation during n-butane aromatization over ZSM-5 zeolite

Cited by 1 publication

References 48 publications

Mechanistic Insight into the Promotional Effect of CO2 on Propane Aromatization over Zn/ZSM-5

Mechanistic Insight into the Promotional Effect of CO2 on Propane Aromatization over Zn/ZSM-5

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Mechanistic Insight into the Promotional Effect of CO₂ on Propane Aromatization over Zn/ZSM-5

Mechanistic Insight into the Promotional Effect of CO₂ on Propane Aromatization over Zn/ZSM-5