Unravelling the chain growth mechanism in Cr/NNN-catalysed ethylene oligomerization

Peng, Jiale; Zhu, Minghua; Chen, Long; Liu, Zhen

doi:10.1039/d3cy00954h

Cited by 4 publications

(1 citation statement)

References 58 publications

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“…However, Cr-based catalysts follow the metallacyclic mechanism and mainly catalyze selective ethylene tri-/tetramerization reactions. In recent years, there have been many reports of Cr-based catalysts in the ethylene oligomerization process owing to their high activity [154][155][156], high selectivity [157,158], and diversity of ligand structures [159][160][161].…”

Section: Chromium-based Homogeneous Catalystsmentioning

confidence: 99%

Ethylene Oligomerization Catalyzed by Different Homogeneous or Heterogeneous Catalysts

Peng,

Huang,

2024

Catalysts

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Linear α-olefins (LAOs) are linear alkenes with double bonds at the ends of the molecular chains. LAOs with different chain lengths can be widely applied in various fields. Ethylene oligomerization has become the main process for producing LAOs. In this review, different homogeneous or heterogeneous catalysts recently reported in ethylene oligomerization with Ni, Fe, Co, Cr, etc., as active centers will be discussed. In the homogeneous catalytic system, we mainly discuss the effects of the molecular structure and the electronic and coordination states of complexes on their catalytic activity and selectivity. The Ni, Fe, and Co homogeneous catalysts are discussed separately based on different ligand types, while the Cr-based homogeneous catalysts are discussed separately for ethylene trimerization, tetramerization, and non-selective oligomerization. In heterogeneous catalytic systems, we mainly concentrate on the influence of various supports (metal–organic frameworks, covalent organic frameworks, molecular sieves, etc.) and different ways to introduce active centers to affect the performance in ethylene oligomerization. Finally, a summary and outlook on ethylene oligomerization catalysts are provided based on the current research. The development of highly selective α-olefin formation processes remains a major challenge for academia and industry.

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Section: Chromium-based Homogeneous Catalystsmentioning

confidence: 99%

Ethylene Oligomerization Catalyzed by Different Homogeneous or Heterogeneous Catalysts

Peng,

Huang,

2024

Catalysts

View full text Add to dashboard Cite

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Highly dispersed and stable Schiff base nickel catalyst on multi-walled carbon nanotubes promote ethylene oligomerization

Li,

He,

Song

et al. 2024

Chemical Engineering Journal

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Design of Cr-PNP catalysts for ethylene tri-/tetramerization assisted by a data-driven approach

Luo,

Peng,

et al. 2023

Journal of Catalysis

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Unravelling the chain growth mechanism in Cr/NNN-catalysed ethylene oligomerization

Abstract: A special and controversial Cr/NNN ethylene oligomerization system delivering oligomers in a Schulz-Flory distribution, which was suggested to follow a metallacycle mechanism, has been systematically investigated by means of density...

Cited by 4 publications

References 58 publications

Ethylene Oligomerization Catalyzed by Different Homogeneous or Heterogeneous Catalysts

Ethylene Oligomerization Catalyzed by Different Homogeneous or Heterogeneous Catalysts

Highly dispersed and stable Schiff base nickel catalyst on multi-walled carbon nanotubes promote ethylene oligomerization

Design of Cr-PNP catalysts for ethylene tri-/tetramerization assisted by a data-driven approach

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