Preparation and Characterization of Co-Mo Catalyst Supported on CNT Coated Cordierite Monoliths Utilized for Naphta HDS Process

Abstract

Abstract In the present study, an acid treatment of the cordierite monolith followed by coating of the CNT onto it by means of catalytic chemical-vapor deposition (CCVD) of methane over CoMo catalyst was performed. The resulting material utilized as the supports for the HDS catalyst onto which was deposited Co and Mo species. The as-prepared samples were characterized by the BET, XRD, FESEM and ICP-MS techniques. BET experiments showed that a significant increase in specific surface area and pore volume was observed, and a suitable pore size distribution was obtained after acid pretreatment. The FESEM images of CNT coated monolith showed that CNTs were distributed uniformly on the surface of monolith substrate, which led to a high BET surface area and relatively good adhered mesoporous layer of CNTs. Ultimately, the catalytic activity of the resulting catalysts was studied in the HDS reaction of Naphta. It was concluded that the activity of CoMo/FACNT catalyst was higher than that of a supported catalyst. Furthermore, the reaction over the this material decreased the sulfur content of Naphtha from 2670 to 53 ppm.