TY - JOUR
T1 - Deep desulfurization of diesel fuels
T2 - Kinetic modeling of model compounds in trickle-bed
AU - Vradman, L.
AU - Landau, M. V.
AU - Herskowitz, M.
N1 - Funding Information:
This research was supported in part by The Israel Science Foundation founded by the Israel Academy of Sciences and Humanities.
PY - 1999/1/1
Y1 - 1999/1/1
N2 - Five catalysts with different hydrodesulfurization (HDS) and hydrogenation activity were tested in HDS of fresh crude heavy atmospheric gas oil (HAGO) (1.33 wt% S), two partially hydrotreated HAGO (1100 and 115 ppm S) and two model compounds, dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT), dissolved in model solvents and HAGO. Aromatic compounds in the liquid decreased significantly the HDS rate of 4,6-DMDBT, especially for catalysts with high hydrogenation activity. H2S displayed a similar inhibition effect with all catalysts. These effects were extremely pronounced in HAGO where the DBT HDS rate decreased by a factor of 10 while 4,6-DMDBT - of 20 relative to paraffinic solvent. The feasibility of using a highly active hydrogenation catalyst for deep HDS of HAGO is diminished by the strong impact of aromatics.
AB - Five catalysts with different hydrodesulfurization (HDS) and hydrogenation activity were tested in HDS of fresh crude heavy atmospheric gas oil (HAGO) (1.33 wt% S), two partially hydrotreated HAGO (1100 and 115 ppm S) and two model compounds, dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT), dissolved in model solvents and HAGO. Aromatic compounds in the liquid decreased significantly the HDS rate of 4,6-DMDBT, especially for catalysts with high hydrogenation activity. H2S displayed a similar inhibition effect with all catalysts. These effects were extremely pronounced in HAGO where the DBT HDS rate decreased by a factor of 10 while 4,6-DMDBT - of 20 relative to paraffinic solvent. The feasibility of using a highly active hydrogenation catalyst for deep HDS of HAGO is diminished by the strong impact of aromatics.
KW - Diesel fuel
KW - Hydrodesulfurization
UR - http://www.scopus.com/inward/record.url?scp=0002351907&partnerID=8YFLogxK
U2 - 10.1016/S0920-5861(98)00356-3
DO - 10.1016/S0920-5861(98)00356-3
M3 - Article
AN - SCOPUS:0002351907
VL - 48
SP - 41
EP - 48
JO - Catalysis Today
JF - Catalysis Today
SN - 0920-5861
IS - 1-4
ER -