TY - JOUR
T1 - Study to improve the quality of a Mexican straight run gasoil over NiMo/γ-Al 2 O 3 catalysts
AU - Domínguez-Crespo, M. A.
AU - Díaz-García, L.
AU - Arce-Estrada, E. M.
AU - Torres-Huerta, A. M.
AU - Cortéz-De la Paz, M. T.
N1 - Funding Information:
Authors wish to thank the financial support from: Instituto Mexicano del Petroleo (IMP) D.01017 Project, CGPI-IPN and CONACYT.
PY - 2006/11/30
Y1 - 2006/11/30
N2 - Four NiMo catalyst supported on Al 2 O 3 with different textural properties have been studied in the hydrodesulfurization (HDS), hydrodenitrogenation (HDN) and hydrodearomatization (HDA) of a Mexican straight run gasoil (SRGO). All reactions were carried out at three different temperatures 613, 633, and 653 K. Alumina supports were analysed by pyridine FTIR-TPD and nitrogen physisorption in order to determine their surface acidity and textural properties, respectively. TPR studies of the NiMo catalysts were analysed to correlate their hydrogenating properties. Metallic particles were characterized (after sulfidation) using transmission electron microscopy (TEM). Catalytic activities are discussed in relation to the physicochemical properties of NiMo catalysts. The importance of textural properties on coke deposition has been emphasized. The results of catalytic activity of these materials varied depending on dispersed MoS particles and pore distribution in final catalysts. The optimum pore diameter was found around 80 Å for HDS and HDN.
AB - Four NiMo catalyst supported on Al 2 O 3 with different textural properties have been studied in the hydrodesulfurization (HDS), hydrodenitrogenation (HDN) and hydrodearomatization (HDA) of a Mexican straight run gasoil (SRGO). All reactions were carried out at three different temperatures 613, 633, and 653 K. Alumina supports were analysed by pyridine FTIR-TPD and nitrogen physisorption in order to determine their surface acidity and textural properties, respectively. TPR studies of the NiMo catalysts were analysed to correlate their hydrogenating properties. Metallic particles were characterized (after sulfidation) using transmission electron microscopy (TEM). Catalytic activities are discussed in relation to the physicochemical properties of NiMo catalysts. The importance of textural properties on coke deposition has been emphasized. The results of catalytic activity of these materials varied depending on dispersed MoS particles and pore distribution in final catalysts. The optimum pore diameter was found around 80 Å for HDS and HDN.
KW - Catalysis
KW - Heavy gasoil
KW - Hydrotreating
KW - NiMoS particles
UR - http://www.scopus.com/inward/record.url?scp=33751327036&partnerID=8YFLogxK
U2 - 10.1016/j.apsusc.2006.01.061
DO - 10.1016/j.apsusc.2006.01.061
M3 - Artículo
SN - 0169-4332
VL - 253
SP - 1205
EP - 1214
JO - Applied Surface Science
JF - Applied Surface Science
IS - 3
ER -