HDS of 4,6-dimethyldibenzothiophene (4,6-DMDBT) HDS over a Ni2P/USY phosphide catalyst and two commercial sulfide catalysts was conducted and the rate constants of the three catalysts for the two pathways were measured. The method based on the initial selectivity was the most reasonable for estimating k1 (pseudo first-order rate constant for the hydrogenation pathway) and k2 (pseudo first-order rate constant for the hydrogenolysis pathway) values among the methods examined. NiMo catalyst was better than CoMo for deep HDS of 4,6-DMDBT because of its higher hydrogenation activity. However, if ranked based on active sites, then the catalytic activity would appear to be Ni phosphide > NiMo sulfide > CoMo sulfide. Transition metal phosphide could have good activity for HDS of 4,6-DMDBT and might become promising catalyst for deep HDS with some further.
|Original language||English (US)|
|Number of pages||2|
|Journal||ACS Division of Fuel Chemistry, Preprints|
|State||Published - Mar 1 2003|
|Event||Proceedings of the 2003 SPE/EPA/DOE Exploration Production Environmental Conference - San Antonio, TX, United States|
Duration: Mar 10 2003 → Mar 12 2003
All Science Journal Classification (ASJC) codes