Ethylene Oligomerization Over Heterogeneous Catalysts

Abstract

Ethylene oligomerization has become one of the major research fields of petrochemical industry worldwide aiming at achieving high activity and selectivity to even number atom products. The heterogeneous catalysts prepared from the loading of homogeneous catalysts or transitional metals on supports with proper acidity have demonstrated promising performance in practical applications, among which the nickel loaded heterogeneous catalysts play the dominant role in ethylene oligomerization. This review paper aims to summarize briefly the synthesis, structure, property, and the active sites of the heterogeneous catalysts for the ethylene oligomerization.

Effect of Metal Oxide–Support Interactions on Ethylene Oligomerization over Nickel Oxide/Silica–Alumina Catalysts

“…[1][2][3]. In particular, the oligomerization of bioethanol-derived ethylene over heterogeneous catalysts has been extensively investigated as part of green chemistry processes [4][5][6]. Even though heterogeneous catalysis afford low product yields due to suffering from mass transfer limitations, they do not feature the inherent drawbacks of homogeneous catalysis, such as difficulty in handling and separation from products, poor result reproducibility, and high cost, and thus being a subject of intensive research.…”

“…Calculated from N 2 sorption data 3. Determined according to the t-plot method 4. Calculated using BJH formalism from the N 2 desorption branch isotherm.…”

Jet fuel range hydrocarbon synthesis through ethylene oligomerization over platelet Ni-AlSBA-15 catalyst

“…Nicontaining catalysts are regarded as the promising heterogeneous catalyst for synthesizing higher olefins via the ethylene oligomerization as reported in many studies [12][13][14][15]. The ethylene oligomerization over Ni-based catalyst has been carried out in wide ranges of temperatures and pressures in both batch and flow reactors [8,[11][12][13]16]. The reaction conditions such as temperature, pressure and space velocity, as well as, the catalytic properties have a strong effect on the activity and selectivity [12].…”

“…Nickel exchanged AlSBA-15 mesoporous catalysts have been reported as an effective catalyst for synthesizing higher olefins from the ethylene oligomerization. Ni-AlSBA-15 are selectively formed C 4 -C 10 olefins due to large pores of SBA-15, and they showed high catalytic stability during the reaction, due to their weak acidity property [13,14]. The large pore channels in SBA-15 support lead to a high diffusion of large molecules, and very good stability against deactivation [11].…”

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

“…Nickel ions supported on different silica, silica-alumina, natural clay, and zeolite-type porous materials are wellknown catalysts for the selective dimerization [1][2][3][4][5][6][7][8][9] and oligomerization [1,5,[10][11][12][13][14][15][16][17][18][19] of olefins in both gas and liquid phases. The application of silica-supported nickel catalysts for the ethylene dimerization dates back to 1980s [20][21][22].…”