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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
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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
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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

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