The effects of CO co-feed on the catalytic performance of Methanol-to-Hydrocarbons conversion on HZSM-5

The effects of CO co-feed on the catalytic performance of Methanol-to-Hydrocarbons conversion on HZSM-5

•Co-feeding CO decreases catalyst lifetime and affects selectivity during MTH on MFI.•The effects of CO depend on zeolite morphology and topology and feed composition.•Reaction-transport formalism reveals morphology-dependent carbonylation and MTH rates. Methanol-to-hydrocarbons catalysis over HZSM-...

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Veröffentlicht in:Chemical engineering journal (Lausanne, Switzerland : 1996) Switzerland : 1996), 2023-01, Vol.456, p.140867, Article 140867
Hauptverfasser: Shi, Zhichen, Bhan, Aditya
Format: Artikel
Sprache:eng
Schlagworte:
Carbonylation
Deactivation
Diffusional constraints
Hydrocarbon pool
Methanol-to-olefins
Syngas-to-olefins
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Zusammenfassung:•Co-feeding CO decreases catalyst lifetime and affects selectivity during MTH on MFI.•The effects of CO depend on zeolite morphology and topology and feed composition.•Reaction-transport formalism reveals morphology-dependent carbonylation and MTH rates. Methanol-to-hydrocarbons catalysis over HZSM-5 at low methanol partial pressure exhibited low steady-state ethylene and aromatics selectivity at sub-complete methanol conversion. Co-feeding CO increases cumulative carbon ratio of ethylene to the sum of 2-methylbutane and 2-methyl-2-butene (>3×) at the expense of catalyst stability, quantified by >18× increase in site-loss yield, and hydrocarbons selectivity (
ISSN:1385-8947
1873-3212
DOI:10.1016/j.cej.2022.140867