Molybdenum nitride and carbide prepared from heteropolyacid - III. Hydrodesulfurization of benzothiophene
作者： Senzi Li , Jae Sung Lee
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摘要: Hydrodesulfurization (HDS) of benzothiophene has been studied over molybdenum nitride prepared from MoO3, 12-molybdophosphoric acid (HPA), and MoO3+P2O5(a physical mixture P2O5and MoO3with stoichiometry P to Mo equal that HPA). It was observed Mo2N an effective catalyst for HDS benzothiophene. Ethylbenzene the exclusive product whole temperature range investigated. Adding P2O5to precursor MoO3had beneficial effects on Most importantly, presence phosphorus in dramatically improved its resistance against deactivation. The reaction pathway appeared not be changed by adding phosphorus. Adsorption, XRD, EPMA, XPS characterized catalysts after reaction. bulk structure face-centered-cubic morphology were retained However, precursors resulted growing polycrystallinity amorphism produced Mo2N. A great amount sulfur compounds found deposited surface reaction, leading reduced responsible
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