A Zeolite-Based Cascade System to Produce Jet Fuel from Ethylene Oligomerization

Hend Omar Mohamed, Omar Abed, Naydu Zambrano, Pedro Castaño*, Idoia Hita*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

2 Scopus citations

Abstract

Jet fuel production from ethylene oligomerization opens a sustainable pathway to clean sulfur-free fuel that is increasingly in demand due to the potential renewable origin of ethylene. The key to a viable heterogeneously catalyzed process is to improve the selectivity of the jet fuel while prolonging the catalyst lifetime. To this end, we have assessed and optimized a dual-bed cascade system based on a dimerization bed that is followed by an oligomerization bed using Ni supported on Y zeolite and ZSM-5 zeolite catalysts, respectively. Our optimization approach uses different catalyst acidities, temperatures, and bed configurations for determining the best yield-conversion relationship. Under optimized dual-bed conditions, we can produce 64 wt % of jet fuel at the beginning of the reaction and maintain a 50 wt % selectivity of this fraction for over 20 h on stream. This paper also analyzes coke deposition (content and nature) at the different experimental conditions and catalyst bed arrangements using temperature-programmed combustion. We demonstrate that the dual-bed approach is effective for protecting the main oligomerization bed (ZSM-5 catalyst) from deactivation, leading to the formation of a lighter type of coke compared with that using the initial Ni2+HY-based dimerization catalyst, which deactivates at a faster rate.

Original languageEnglish (US)
Pages (from-to)15880-15892
Number of pages13
JournalIndustrial and Engineering Chemistry Research
Volume61
Issue number43
DOIs
StatePublished - Nov 2 2022

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Industrial and Manufacturing Engineering

Fingerprint

Dive into the research topics of 'A Zeolite-Based Cascade System to Produce Jet Fuel from Ethylene Oligomerization'. Together they form a unique fingerprint.

Cite this