The application of novel dendritic nickel catalysts in the oligomerization of ethylene

R. Malgas; S. F. Mapolie; S. O. Ojwach; G. S. Smith; J. Darkwa

doi:10.1016/j.catcom.2008.01.009

The application of novel dendritic nickel catalysts in the oligomerization of ethylene

R. Malgas, S. F. Mapolie, S. O. Ojwach, G. S. Smith, J. Darkwa

Chemical Sciences

Research output: Contribution to journal › Article › peer-review

43 Citations (Scopus)

Abstract

Multinuclear nickel complexes were derived from generation1 (G1) and generation 2 (G2) dendrimeric salicylaldimine ligands based polypropyleneimine dendrimers of the type, DAB-(NH₂)_n (n = 4 or 8, DAB = diaminobutane). These novel dendritic complexes were evaluated as catalyst precursors in the oligomerization of ethylene, using EtAlCl₂ as an activator. The oligomerization results show that there is a clear dendritic effect, in that both the catalyst activity as well as selectivity is impacted by the dendrimer generation. Thus for example the second generation dendritic complex shows higher activity than the corresponding first generation complex.

Original language	English
Pages (from-to)	1612-1617
Number of pages	6
Journal	Catalysis Communications
Volume	9
Issue number	7
DOIs	https://doi.org/10.1016/j.catcom.2008.01.009
Publication status	Published - 1 Apr 2008

Keywords

Dendritic catalyst
Ethylene oligomerization
Nickel salicylaldimine complexes

ASJC Scopus subject areas

Catalysis
General Chemistry
Process Chemistry and Technology

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10.1016/j.catcom.2008.01.009

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title = "The application of novel dendritic nickel catalysts in the oligomerization of ethylene",

abstract = "Multinuclear nickel complexes were derived from generation1 (G1) and generation 2 (G2) dendrimeric salicylaldimine ligands based polypropyleneimine dendrimers of the type, DAB-(NH2)n (n = 4 or 8, DAB = diaminobutane). These novel dendritic complexes were evaluated as catalyst precursors in the oligomerization of ethylene, using EtAlCl2 as an activator. The oligomerization results show that there is a clear dendritic effect, in that both the catalyst activity as well as selectivity is impacted by the dendrimer generation. Thus for example the second generation dendritic complex shows higher activity than the corresponding first generation complex.",

keywords = "Dendritic catalyst, Ethylene oligomerization, Nickel salicylaldimine complexes",

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T1 - The application of novel dendritic nickel catalysts in the oligomerization of ethylene

AU - Malgas, R.

AU - Mapolie, S. F.

AU - Ojwach, S. O.

AU - Smith, G. S.

AU - Darkwa, J.

PY - 2008/4/1

Y1 - 2008/4/1

N2 - Multinuclear nickel complexes were derived from generation1 (G1) and generation 2 (G2) dendrimeric salicylaldimine ligands based polypropyleneimine dendrimers of the type, DAB-(NH2)n (n = 4 or 8, DAB = diaminobutane). These novel dendritic complexes were evaluated as catalyst precursors in the oligomerization of ethylene, using EtAlCl2 as an activator. The oligomerization results show that there is a clear dendritic effect, in that both the catalyst activity as well as selectivity is impacted by the dendrimer generation. Thus for example the second generation dendritic complex shows higher activity than the corresponding first generation complex.

AB - Multinuclear nickel complexes were derived from generation1 (G1) and generation 2 (G2) dendrimeric salicylaldimine ligands based polypropyleneimine dendrimers of the type, DAB-(NH2)n (n = 4 or 8, DAB = diaminobutane). These novel dendritic complexes were evaluated as catalyst precursors in the oligomerization of ethylene, using EtAlCl2 as an activator. The oligomerization results show that there is a clear dendritic effect, in that both the catalyst activity as well as selectivity is impacted by the dendrimer generation. Thus for example the second generation dendritic complex shows higher activity than the corresponding first generation complex.

KW - Dendritic catalyst

KW - Ethylene oligomerization

KW - Nickel salicylaldimine complexes

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The application of novel dendritic nickel catalysts in the oligomerization of ethylene

Abstract

Keywords

ASJC Scopus subject areas

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