Use of complexes of Re2(CO)10 and Re2(CO)8(μ-dppm) supported on SiO2 by anchoring with nitrogenous aminosilane ligands as catalysts in the HDS reaction

Abstract:

The complex Re<inf>2</inf>(CO)<inf>10</inf> and Re<inf>2</inf>(CO)<inf>8</inf>(μ-dppm) (dppm = bis(diphenylphosphine) methane) were supported on SiO<inf>2</inf> (Aerosil-200) and anchored by post-synthesis method using N-[3- (trimethoxysilyl)propyl] ethylene-diamine (TPEN) and passivating methyl triethoxysilane (TEMS) ligands. The material obtained was characterized by chemical analysis (ICP), elemental analysis (EA), infrared spectroscopy (IRFT), thermogravimetric analysis (TGA), adsorption and desorption of nitrogen, X-ray diffraction (XRD), chemical analysis by electron microscopy scanning energy dispersive X-ray (SEM/EDX) and transmission electron microscopy (TEM). Complexes supported on Aerosil-200 showed catalytic activity in the hydrodesulfurization of thiophene and dibenzothiophene (DBT) predominating the path of the previous hydrogenation of the substrates under the established mild conditions of pressure and temperature.

Año de publicación:

2015

Keywords:

• Nitrogen-amino-silanes ligands
• Re dimer complex 2
• anchoring
• Re2 dimer complex

Fuente:

scopus