Nickel-based solid catalysts for ethylene oligomerization – a review

Abstract

The properties of Ni-based inorganic porous materials and their catalytic performance in ethylene oligomerization are reviewed.

Ethene oligomerization on Ni-SiO2-Al2O3: Experimental investigation and Single-Event MicroKinetic modeling

“…Figure 1-a shows a typical IR spectrum recorded while CO was adsorbed at 293 K. The two peaks at 2180 and 2120 cm -1 can be assigned to gas phase CO [38]. The peaks between 2060 and 2000 cm -1 cannot be attributed to gas phase CO, but could possibly indicate the presence of Ni 0 -CO or a binuclear bridging Ni + complex, i.e., Ni + -(CO) 2 [21,39].…”

“…Especially, the group of Scurrell [12][13][14][15] and Hulea [16][17][18][19][20] performed exhaustive work on ethene oligomerization on various silica-aluminas. An extended review on these findings has been written by Finiels et al [21]. Up to now, however, no work has been reported on the detailed kinetic modeling of ethene oligomerization on a silica alumina comprising a metal ion function.…”

(Pyrazolyl)-(phosphinoyl)pyridine iron(II), cobalt(II) and nickel(II) complexes: Synthesis, characterization and ethylene oligomerization studies

“…Ethylene oligomerization is one of the most significant processes employing homogenous transition-metal catalysts [3] and is currently receiving great interest both in academia and industry. Since the discovery of Shell Higher Olefins Process (SHOP) nickel(II) based catalysts [4], significant amount of research efforts have been expedited on the design and development of alternative transition metal catalysts with improved catalytic performance with respect to activity, stability and selectivity [5e9].It has been extensively established that through careful manipulation of the catalyst structure, choice of co-catalyst and reaction conditions, the product selectivity can be greatly altered [10]. In this design, ligand structure has been shown to play a major role in regulating both the electronic and steric properties of the complexes [11,12] via the incorporation of bulky groups, variation in the donor atom as well as electron withdrawing and donating groups [13].…”

Theoretical identification of structural heterogeneities of divalent nickel active sites in NiMCM-41 nanoporous catalysts

“…The application of silica-supported nickel catalysts for the ethylene dimerization dates back to 1980s [20][21][22]. Later, the large and well-ordered cavities of the Ni-exchanged MCM-41 proved highly favorable for the oligomerization of olefins [23]. For instance, high productivities of oligomers were obtained over Ni-incorporated MCM-41 catalysts [17] being higher than those reported previously with silica-alumina supports [19].…”