Effect of Surface Acidity of CuO-SBA-15 on Adsorptive Desulfurization of Fuel Oils

Abstract

Solid-state grinding is a simple and effective technique to incorporate active species into the channels of mesoporous materials with different degrees of filling. Using this method, different concentrations of CuO were loaded into the mesochannels of as-prepared mesoporous silica (APS) and calcined SBA-15 (CS). The samples were prepared and characterized using X-ray diffraction (XRD), N2 physisorption, and Fourier transform infrared (FTIR) spectroscopy. The relative number of hydroxyl groups was studied by in situ FTIR spectroscopy, and the total surface acidity of the adsorbents was monitored by FTIR spectroscopy at 423 K using pyridine as a probe. Desulfurization of fluid catalytic cracking (FCC) fuel oils using these materials was investigated. The results suggest that CuO interacts directly with support [Article]