A scanning pulse reaction technique for transient analysis of the methanol-to-hydrocarbons reaction

Anna Liutkova; Evgeny A. Uslamin; Alexander Parastaev; Aleksei P. Bolshakov; Brahim Mezari; Emiel J.M. Hensen; Nikolay A. Kosinov

doi:10.1016/j.cattod.2022.05.005

A scanning pulse reaction technique for transient analysis of the methanol-to-hydrocarbons reaction

Anna Liutkova, Evgeny A. Uslamin, Alexander Parastaev, Aleksei P. Bolshakov, Brahim Mezari, Emiel J.M. Hensen (Corresponding author), Nikolay A. Kosinov (Corresponding author)

Inorganic Materials & Catalysis

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Abstract

A method of scanning pulse gas chromatography (SP-GC) suitable for time-resolved analysis of transient response of catalysts to reactant pulses is introduced. Applied to the methanol-to-hydrocarbons reaction over several zeolite-based catalysts (HZSM-5, Ca/ZSM-5 and Ga/ZSM-5), SP-GC provided quantitative information about the transient reactivity and selectivity during methanol conversion. The SP-GC analysis demonstrates substantial differences in the relative rates of hydrocarbon formation between catalysts that favor aromatic or olefin cycles of the dual cycle hydrocarbon pool mechanism. The influence of metal promoters on the main reaction pathways was highlighted with an emphasis on mechanistic aspects.

Original language	English
Article number	113740
Number of pages	8
Journal	Catalysis Today
Volume	417
DOIs	https://doi.org/10.1016/j.cattod.2022.05.005
Publication status	Published - 1 May 2023

Keywords

Hydrocarbon pool
Methanol-to-hydrocarbons
Step-response catalytic experiments
Transient kinetics
Zeolite

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10.1016/j.cattod.2022.05.005

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title = "A scanning pulse reaction technique for transient analysis of the methanol-to-hydrocarbons reaction",

abstract = "A method of scanning pulse gas chromatography (SP-GC) suitable for time-resolved analysis of transient response of catalysts to reactant pulses is introduced. Applied to the methanol-to-hydrocarbons reaction over several zeolite-based catalysts (HZSM-5, Ca/ZSM-5 and Ga/ZSM-5), SP-GC provided quantitative information about the transient reactivity and selectivity during methanol conversion. The SP-GC analysis demonstrates substantial differences in the relative rates of hydrocarbon formation between catalysts that favor aromatic or olefin cycles of the dual cycle hydrocarbon pool mechanism. The influence of metal promoters on the main reaction pathways was highlighted with an emphasis on mechanistic aspects.",

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T1 - A scanning pulse reaction technique for transient analysis of the methanol-to-hydrocarbons reaction

AU - Liutkova, Anna

AU - Uslamin, Evgeny A.

AU - Parastaev, Alexander

AU - Bolshakov, Aleksei P.

AU - Mezari, Brahim

AU - Hensen, Emiel J.M.

AU - Kosinov, Nikolay A.

PY - 2023/5/1

Y1 - 2023/5/1

N2 - A method of scanning pulse gas chromatography (SP-GC) suitable for time-resolved analysis of transient response of catalysts to reactant pulses is introduced. Applied to the methanol-to-hydrocarbons reaction over several zeolite-based catalysts (HZSM-5, Ca/ZSM-5 and Ga/ZSM-5), SP-GC provided quantitative information about the transient reactivity and selectivity during methanol conversion. The SP-GC analysis demonstrates substantial differences in the relative rates of hydrocarbon formation between catalysts that favor aromatic or olefin cycles of the dual cycle hydrocarbon pool mechanism. The influence of metal promoters on the main reaction pathways was highlighted with an emphasis on mechanistic aspects.

AB - A method of scanning pulse gas chromatography (SP-GC) suitable for time-resolved analysis of transient response of catalysts to reactant pulses is introduced. Applied to the methanol-to-hydrocarbons reaction over several zeolite-based catalysts (HZSM-5, Ca/ZSM-5 and Ga/ZSM-5), SP-GC provided quantitative information about the transient reactivity and selectivity during methanol conversion. The SP-GC analysis demonstrates substantial differences in the relative rates of hydrocarbon formation between catalysts that favor aromatic or olefin cycles of the dual cycle hydrocarbon pool mechanism. The influence of metal promoters on the main reaction pathways was highlighted with an emphasis on mechanistic aspects.

KW - Hydrocarbon pool

KW - Methanol-to-hydrocarbons

KW - Step-response catalytic experiments

KW - Transient kinetics

KW - Zeolite

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U2 - 10.1016/j.cattod.2022.05.005

DO - 10.1016/j.cattod.2022.05.005

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VL - 417

JO - Catalysis Today

JF - Catalysis Today

M1 - 113740

ER -

A scanning pulse reaction technique for transient analysis of the methanol-to-hydrocarbons reaction

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