Support effects on hydrotreating activity of NiMo catalysts

Journal Article · Mon Oct 15 04:00:00 EDT 2007 · Materials Characterization

DOI:https://doi.org/10.1016/j.matchar.2006.08.013· OSTI ID:21062155

Dominguez-Crespo, M A ^[1]; Arce-Estrada, E M ^[2]; Torres-Huerta, A M ^[3]; Diaz-Garcia, L

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1. Instituto Mexicano del Petroleo, Programa de Tratamiento de Crudo Maya. Avenida Eje Central Lazaro Cardenas No.152, Col. San Bartolo Atepehuacan, 07730, Mexico D. F. (Mexico)
2. Instituto Politecnico Nacional, Departamento de Metalurgia y Materiales. A. P. 75-876, 07300 Mexico, D. F. (Mexico)
3. Universidad Nacional Autonoma de Mexico, Instituto de Investigacion en Materiales, Circuito Exterior s/n, Ciudad Universitaria. A.P. 70-360. Del. Coyoacan, C. P. 04510 Mexico D. F. (Mexico)

The effect of the gamma alumina particle size on the catalytic activity of NiMoS{sub x} catalysts prepared by precipitation method of aluminum acetate at pH = 10 was studied. The structural characterization of the supports was measured by using XRD, pyridine FTIR-TPD and nitrogen physisorption. NiMo catalysts were characterized during the preparation steps (annealing and sulfidation) using transmission electron microscopy (TEM). Hydrogen TPR studies of the NiMo catalysts were also carried out in order to correlate their hydrogenating properties and their catalytic functionality. Catalytic tests were carried out in a pilot plant at 613, 633 and 653 K temperatures. The results showed that the rate constants of hydrodesulfurization (HDS), hydrodenitrogenation (HDN) and hydrodearomatizing (HDA) at 613-653 K decreased in the following order: A > B > C corresponding to the increase of NiMoS particle size associated to these catalysts.

• OSTI ID: 21062155
• Journal Information: Materials Characterization, Journal Name: Materials Characterization Journal Issue: 10 Vol. 58; ISSN 1044-5803; ISSN MACHEX
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ACETATES
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
ANNEALING
CATALYST SUPPORTS
CATALYSTS
FOURIER TRANSFORMATION
HYDROGEN
INFRARED SPECTRA
MOLYBDENUM SULFIDES
NICKEL SULFIDES
NITROGEN
PARTICLE SIZE
PH VALUE
PILOT PLANTS
PYRIDINE
REACTION KINETICS
TEMPERATURE RANGE 0400-1000 K
TRANSMISSION ELECTRON MICROSCOPY
X-RAY DIFFRACTION