A nano-organized ethylene oligomerisation catalyst :Characterization and reactivity of the Ni(MeCN)6(BF4)2/[Al]-MCM-41/AlEt3 system.

Leon Gengembre (1) , Michèle O de Souza (2) , Larisa R Rodrigues (2) , Heloise O Pastore (3) , Juan a C Ruiz (3) , Régis M Gauvin (1) , Roberto F de Souza (2)

1 UCCS - Unité de Catalyse et Chimie du Solide - UMR 8181
2 Instituto de Quimica
3 Instituto de Quimica

The complex Ni(MeCN)6(BF4)2 has been immobilized on [Al]-MCM-41 (Ni/[Al]-MCM-41) and characterized by X-ray diffraction(XRD) N2 adsorption, transmission electron microscopy (TEM), diffuse reflectance infrared microscopy (DRIFTS) and X-ray photoelectron spectroscopy (XPS). The heterogeneized system retains the catalytic properties of its molecular precursor: The immobilized complex associated with AlEt3 is actice in heterogeneous phase ethylene oligomerization under mild reaction conditions . The AlET3/nickel molar ratio Al/Ni has shown to be a fundamental paraameter to control the selectivity of the system into 1-butene. Under typical reaction conditions, 313K and 0.98 MPa of ethylene and Al/Ni molar ratio of 15, selectivities of ca. 84% in 1-butene have been obtained.

Mots clés: nickel; MCM-41; XPS; Ethylene; Oligomerization; 1-butene

Domaines: Matériaux; Catalyse

Leon Gengembre, Michèle O de Souza, Larisa R Rodrigues, Heloise O Pastore, Juan a C Ruiz, et al.. A nano-organized ethylene oligomerisation catalyst :Characterization and reactivity of the Ni(MeCN)6(BF4)2/[Al]-MCM-41/AlEt3 system.. Microporous and Mesoporous Materials, 2006, 96, pp.109-114. ⟨10.1016/j.micromeso.2006.06.023⟩. ⟨hal-00110782⟩