Hostname: page-component-78c5997874-t5tsf Total loading time: 0 Render date: 2024-11-10T10:03:28.167Z Has data issue: false hasContentIssue false
  • English
  • Français

Amorphous TiO2 and SiO2 Modified Alumina as Catalyst Support for Hydroprocessing of Maya Crude Oil Heavy Fractions

Published online by Cambridge University Press:  15 February 2011

E. Lopez-Salinas ,
T. Itoh ,
E. Morales ,
S. Rivera ,
B. Medellin ,
M. E. Llanos ,
T. Beltran ,
M. T. Cortes ,
R. Zarate  and
A. Vazquez
...Show all authors
E. Lopez-Salinas
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
T. Itoh
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
E. Morales
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
S. Rivera
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
B. Medellin
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
M. E. Llanos
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
T. Beltran
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
M. T. Cortes
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
R. Zarate
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
A. Vazquez
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
J. Navarrete
Affiliation:
Instituto Mexicano del Petróleo, Subdirección de Transformación Industrial, L. Cárdenas 152, 07730 México D. F., esalinas@www.imp.mx
Get access

Abstract

A series of aluminas modified with 3-15 wt% S102 (AMASAs) and 2-9 wt% TiO2 (AMATAs) were prepared by a deposition and/or coprecipitation methods. The pore size distribution was varied by means of a pH-swing procedure where alternating pH acid-alkaline values generated 100-200 Å pores, particularly in the AMASAs case. However, the incorporation of TiO 2 in the AMATAs even after the pH-swing procedure results in a pore size and volume decrease- The degree of TiO 2 reduction is much higher in AMATAs obtained by deposition than those obtained by coprecipitation. The use of AMASAs as catalyst supports of 2.4 wt% Ni and 8.8 wt% Mo in the hydroconversion of a vacuum distillation residue brings about 1.5 times higher conversion to lighter fractions in comparison with a commercial alumina-based catalyst. AMATA-based catalyst shows similar activity and selectivity to the commercial catalyst. However, the presence of TiO2 (6 wt%) considerably increases the N and V removal, and decreases the formation of sediments.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 549: Symposium FF – Advanced Catalytic Materials - 1998 , 1998 , 217
Copyright
Copyright © Materials Research Society 1999

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

1. Dickie, J. P. and Yen, T. F., Anal. Chem. 39, 1847 (1967).Google Scholar
2. Yen, T. F. and Chilingarian, G. V., Asphaltenes andAsphaltsI, Elsevier Science, Amsterdam, 1994, p. 121.Google Scholar
3. Ono, T., Ohguchi, Y and Togari, O., in Preparation of Catalysts III, edited by Poncelet, G., Grange, P. and Jacobs, P. A., Elsevier Science, Amsterdam, 1983, pp. 631–641.Google Scholar
4. Ramirez, J., Fuentes, S., Diaz, G., Vrinat, M., Breysse, M., Lacroix, M., Appl. Catal. 52, 211 (1989)Google Scholar
5. Wefers, K., Misra, C, Oxides and Hydroxides ofAlumirnam, Alcoa Technical Paper No. 19, p.3 (1987)Google Scholar
6. Ramirez, J., Gutierrez-Alejandre, A, J. Catal. 170, 108 (1997).Google Scholar
7. Che, M., Naccache, C. and Imelik, B., J. Catal. 24, 328 (1972).Google Scholar
8. Tanaka, T., Kumagai, H., Hattori, H., Kudo, M., Hasegawa, S., J. Catal. 127, 221 (1991).Google Scholar
9. Martinez, N.P., Velasquez, J.R., Lujano, J.A, U.S. Patent 4,816,135 (1989).Google Scholar