Kinetic Modelling of the Influence of H<sub>2</sub>S on Dibenzothiophene Hydrodesulfurization in a Batch System over Nano-MoS<sub>2</sub>

作     者：Hamdy Farag Abdel-Nasser A. El-Hendawy Masahiro Kishida Hamdy Farag;Abdel-Nasser A. El-Hendawy;Masahiro Kishida

作者机构：Department of Material Process Engineering Graduate School of Engineering Kyushu University Fukuoka Japan Chemistry Department Faculty of Science Mansoura University Mansoura Egypt Physical Chemistry Department National Research Center Cairo Egypt 

出 版 物：《Advances in Chemical Engineering and Science》 (化学工程与科学期刊（英文）)

年 卷 期：2020年第10卷第3期

页      面：135-148页

学科分类：081704[工学-应用化学] 07[理学] 070304[理学-物理化学(含∶化学物理)] 08[工学] 0817[工学-化学工程与技术] 0703[理学-化学] 

主　　题：Hydrodesulfurization MoS₂ Kinetics Model Autocatalysis Dibenzothiophene 

摘      要：In this work, the possibility of enhanced activity during the hydrodesulfurization of dibenzothiophene over certain nano-MoS2 catalyst due to the presence of H2S was examined by focusing on the reaction kinetics. With H2S generated in situ, the overall reaction followed the autocatalytic rate law;while in the absence of H2S the kinetics indicated a pseudo-first-order reaction. H2S appears to modify the relative contributions of parallel hydrogenation and desulfurization reactions by drastically increasing the hydrogenation rate. Kinetic models were developed that describe the hydrodesulfurization reaction at various H2S concentrations, and the kinetic parameters and adsorption equilibrium constants associated with this process were estimated by fitting the experimental data. The results suggest that the promotion and/or inhibition of hydrodesulfurization by H2S likely result from the same overall reaction mechanism.