Benefits of the SiO2-supported nickel phosphide catalyst on ethylene oligomerization

Mi Shin, Hwiram Jeong, Myung June Park, Young Woong Suh

Research output: Contribution to journalArticle

Abstract

Although homogeneous catalytic systems have been central in ethylene oligomerization, the SiO2-Al2O3-supported nickel phosphide (Ni2P) catalyst was recently examined to be capable of transforming ethylene into higher olefins. Herein, better catalytic performance in ethylene oligomerization is achieved with Ni2P/SiO2 than Ni2P/SiO2-Al2O3 and Ni2P/Al2O3. As a factor influencing ethylene oligomerization, the particle size of Ni2P is the smallest over Ni2P/SiO2 due to strong metal-support interaction. While the oligomer productivity is affected by the density of Brønsted acid site present in the supported Ni2P catalysts, Ni2P/SiO2 has a relatively high ratio of Brønsted to Lewis acid sites. Moreover, Ni2P/SiO2 is able to easily generate and transfer hydrogen species via the Brønsted acid P[sbnd]OH groups, which would affect formation of nickel hydride species that is important in oligomerizing ethylene. Therefore, the above features of Ni2P/SiO2 are beneficial for ethylene oligomerization into higher olefins.

Original languageEnglish
Article number117376
JournalApplied Catalysis A: General
Volume591
DOIs
StatePublished - 2020 Feb 5

Fingerprint

Oligomerization
Nickel
Ethylene
Catalysts
Alkenes
Olefins
Acids
Lewis Acids
Oligomers
Catalyst supports
Hydrides
ethylene
Hydrogen
Productivity
Metals
Particle size

Keywords

  • Brønsted acid sites
  • Ethylene oligomerization
  • Nickel phosphide
  • Supports

Cite this

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title = "Benefits of the SiO2-supported nickel phosphide catalyst on ethylene oligomerization",
abstract = "Although homogeneous catalytic systems have been central in ethylene oligomerization, the SiO2-Al2O3-supported nickel phosphide (Ni2P) catalyst was recently examined to be capable of transforming ethylene into higher olefins. Herein, better catalytic performance in ethylene oligomerization is achieved with Ni2P/SiO2 than Ni2P/SiO2-Al2O3 and Ni2P/Al2O3. As a factor influencing ethylene oligomerization, the particle size of Ni2P is the smallest over Ni2P/SiO2 due to strong metal-support interaction. While the oligomer productivity is affected by the density of Br{\o}nsted acid site present in the supported Ni2P catalysts, Ni2P/SiO2 has a relatively high ratio of Br{\o}nsted to Lewis acid sites. Moreover, Ni2P/SiO2 is able to easily generate and transfer hydrogen species via the Br{\o}nsted acid P[sbnd]OH groups, which would affect formation of nickel hydride species that is important in oligomerizing ethylene. Therefore, the above features of Ni2P/SiO2 are beneficial for ethylene oligomerization into higher olefins.",
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Benefits of the SiO2-supported nickel phosphide catalyst on ethylene oligomerization. / Shin, Mi; Jeong, Hwiram; Park, Myung June; Suh, Young Woong.

In: Applied Catalysis A: General, Vol. 591, 117376, 05.02.2020.

Research output: Contribution to journalArticle

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T1 - Benefits of the SiO2-supported nickel phosphide catalyst on ethylene oligomerization

AU - Shin, Mi

AU - Jeong, Hwiram

AU - Park, Myung June

AU - Suh, Young Woong

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AB - Although homogeneous catalytic systems have been central in ethylene oligomerization, the SiO2-Al2O3-supported nickel phosphide (Ni2P) catalyst was recently examined to be capable of transforming ethylene into higher olefins. Herein, better catalytic performance in ethylene oligomerization is achieved with Ni2P/SiO2 than Ni2P/SiO2-Al2O3 and Ni2P/Al2O3. As a factor influencing ethylene oligomerization, the particle size of Ni2P is the smallest over Ni2P/SiO2 due to strong metal-support interaction. While the oligomer productivity is affected by the density of Brønsted acid site present in the supported Ni2P catalysts, Ni2P/SiO2 has a relatively high ratio of Brønsted to Lewis acid sites. Moreover, Ni2P/SiO2 is able to easily generate and transfer hydrogen species via the Brønsted acid P[sbnd]OH groups, which would affect formation of nickel hydride species that is important in oligomerizing ethylene. Therefore, the above features of Ni2P/SiO2 are beneficial for ethylene oligomerization into higher olefins.

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