Reactivity of sulfur compounds in FCC decant oils for hydrodesulfurization over CoMoS2/Al2O3 catalysts

Abstract

CoMoS 2 /Al 2 O 3 catalysts prepared by adding citric acid (CA) were synthesized and applied tor hydrodesulfurization (HDS) of fluid-catalytic cracking decant-oils (FCC-DO). The HDS of FCC-DO was carried out in an autoclave batch reactor at 653 K and 9.4 MPa H 2 . The structural properties of the catalysts were characterized by N 2 physisorption, X-ray absorption fine structure spectroscopy (XAFS), and transmission electron microscopy (TEM). The S compounds in FCC-DO have been classified into three groups in terms of the reactivity of HDS. The Co K-edge XANES analysis confirmed the formation of the Co-Mo-S phase with the addition of CA, contributing to better activity in the HDS of FCC-DO.

Hydrotreating of Waste Tire Pyrolysis Oil over Highly Dispersed Ni2P Catalyst Supported on SBA-15

“…They reported that benzothiazole was removed entirely, while substituted DBTs substantially remained in the hydrotreating products. As expected, light sulfur compounds such as thiophene derivatives showed higher reactivity than heavy sulfur compounds [26]. On the other hand, the nitrogen compounds had an opposite tendency compared to the light nitrogen compounds, including aniline, which showed the lowest reactivity among the nitrogen compounds.…”

Research progress in the preparation of mesophase pitch from fluid catalytic cracking slurry

“…The post-treatment conditions and structure of mesophase pitch determine the performance and structure of the prepared carbon materials which include carbon bers, needle coke, porous carbon, carbon microbeads, and foam carbon. [128][129][130][131] 6.1 Mesophase pitch-based carbon ber…”

Effects of pyrolyzing and phosphiding on dibenzothiophene hydrodesulfurization of MOF-derived Ni2P

“…This makes it particularly important to design and develop innovative catalysts with excellent HDS performance for academia and industry [2][3][4][5][6]. In addition to improving the activity of typical Al2O3-supported Ni (Co) -Mo (W) sulfide HDS catalysts, noble metals, metal phosphides, metal silicides, metal borides, and metal carbides have all been used as catalysts for HDS reactions [7][8][9][10][11][12][13]. Among them, Ni2P is considered as a promising alternative to conventional HDS catalysts because of its high hydrogenation activity, good stability, and strong tolerance to sulfur and nitrogen [14,15].…”