期刊
FUEL PROCESSING TECHNOLOGY
卷 177, 期 -, 页码 66-74出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.fuproc.2018.04.010
关键词
Hydrodesulfurization; Kinetic modeling; Phosphorus; NiMo catalyst; Diesel
资金
- PETROBRAS S.A. [00500071477119]
- ANP
- FINEP
- CNPq
- PRH-13 [2010.3928-0]
A series of NiMo/alumina catalysts modified with phosphorus was prepared and evaluated in a trickle-bed high-pressure flow micro-reactor. The kinetics of deep hydrodesulfurization (HDS) of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT) was investigated based on conversion and products distribution data. The estimated parameters obtained were statistically significant, suggesting an accurate representation of the system. Phosphorus addition led to a two-fold increase in the formation of direct desulfurization over hydrogenation products for the HDS of DBT. On the other hand, the HDS of DMDBT increased mainly due to an increase in the hydrogenation route, leading to high yields of hydrogenated products. The observed phenomena were described well by the estimated parameters and may be related to an increase in metal dispersion, formation of more active sites and enhancement in Bronsted acidity in the catalyst upon phosphorus addition.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据