Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9609914 | Applied Catalysis B: Environmental | 2005 | 7 Pages |
Abstract
Highly dispersed CoMoS/Al2O3 was prepared by dispersing MoS2 crystallites on Al2O3 by a sonochemical method, followed by the selective deposition of Co on the resulting MoS2 crystallites. The newly prepared catalyst contained larger amounts of CoMoS phase, a known active site for hydrodesulfurization (HDS), than a catalyst prepared by sequential impregnation and, as a result, exhibited a two to three times higher activity than that of the impregnated one for the HDS of dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (4,6-DMDBT). The former catalyst promoted hydrogenation (HYD) route to a greater extent than direct desulfurization (DDS) route. Therefore, the extent of activity increase for the new catalyst was larger for 4,6-DMDBT HDS, which proceeds largely via the HYD route, than for DBT HDS, which proceeds largely by DDS.
Keywords
Related Topics
Physical Sciences and Engineering
Chemical Engineering
Catalysis
Authors
Jung Joon Lee, Heeyeon Kim, Jae Hyun Koh, Ara Jo, Sang Heup Moon,