Effect of vanadium over NiMo/sepiolite hydrotreating catalyst

被引:2
|
作者
Martin, Nancy
Melo, Francisco
机构
[1] Univ Autonoma Metropolitana Iztapalapa, Dept Quim, Mexico City 09340, DF, Mexico
[2] Univ Politecn Valencia, ITQ, Valencia, Spain
来源
REACTION KINETICS AND CATALYSIS LETTERS | 2006年 / 88卷 / 01期
关键词
sepiolite; hydrodesulfuration; hydrotreating; vanadium deactivation;
D O I
10.1007/s11144-006-0106-3
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
Hydrotreating (HDT) and hydrodesulfuration (HDS) using an FCC feed were carried out at 673-748 K and 50 MPa total pressure. The effect of vanadium impregnated on a NiMo catalyst supported on sepiolite for HDT and HDS reactions was studied. A commercial NiMo/Al2O3 catalyst was used as reference. The hydrotreating conversions (wt.% HDT) is defined here as the net hydrotreating conversion into products boiling below 653 K. The results were compared with an accelerated ageing test using the catalysts on an FCC feed, with vanadium in the form of naphthenate (2000 ppm of V) added to rapidly deactivate catalysts via metal deposition. The results indicate that vanadium affects more the catalyst supported on sepiolite that the commercial catalyst. Also, at our reaction conditions, the effect of vanadium on sepiolite catalyst is similar, to those used with vanadium impregnated on the catalyst or on the catalyst where the vanadium in naphthenate form was added to FCC feed.
引用
收藏
页码:27 / 34
页数:8
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