Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-23T07:39:33.950Z Has data issue: false hasContentIssue false
  • English
  • Français

Structural Aspects of Ternary Phase Ni/MoWS2 Catalyst: An Aberration Corrected HRTEM Study

Published online by Cambridge University Press:  30 September 2013

M. Ramos ,
B. Torres ,
Daniel Bahena ,
M. José-Yacamán ,
Lorena Alvarez-Contreras  and
R.R. Chianelli
M. Ramos*
Affiliation:
Materials Research and Technology Institute, University of Texas at El Paso, 500W University Ave, El Paso, TX. 79968, U.S. Departmento de Física y Matemáticas, Universidad Autónoma de Ciudad Juárez, Avenida del Charro #450 N Ciudad Juarez, Chihuahua, MX. 32310
B. Torres
Affiliation:
Materials Research and Technology Institute, University of Texas at El Paso, 500W University Ave, El Paso, TX. 79968, U.S.
Daniel Bahena
Affiliation:
Department of Physics, University of Texas at San Antonio, One UTSA Circle, 78249 U.S.
M. José-Yacamán
Affiliation:
Department of Physics, University of Texas at San Antonio, One UTSA Circle, 78249 U.S.
Lorena Alvarez-Contreras
Affiliation:
Centro de Investigación en Materiales Avanzados S.C., Laboratorio Nacional de Nanotecnología. Chihuahua Miguel de Cervantes 120, Complejo Industrial Chihuahua, Chihuahua, C. P. 31109 México
R.R. Chianelli
Affiliation:
Materials Research and Technology Institute, University of Texas at El Paso, 500W University Ave, El Paso, TX. 79968, U.S.
*
*Corresponding author: [email protected], [email protected]
Get access

Abstract

In the past 20 years, one of the best catalytic materials for hydrodesulphurization reactions of crude oil has been the transition sulfides, MoS2, known also as the “workhorse” of the refinery industry. It has been proven by this and other research groups that the MoS2 laminar structure can increase its catalytic activity when promoted with cobalt or nickel. The location of active sites seem to be at rim and edge sites on that particular laminar structure, as demonstrated using Mössbauer spectroscopy and x-ray techniques. However, due to maximum capability of this promoted systems, Co(Ni)/MoS2 to remove heterogeneous atoms (S, N, O) - a search for new catalytic materials has currently been an ongoing activity in the HDS community. Here, we will present the new family of ternary phase catalyst with special emphasis on their structural aspects, as revealed by aberration corrected (Cs) high-resolution transmission electron microscopy techniques, in an attempt to describe the nature of active sites on this porous nano-rod like catalytic materials.

Keywords

MoS2HRTEMCatalyticHDScatalyticscanning transmission electron microscopy (STEM)nanostructure
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1548: Symposium N – Nanomaterials in the Subnanometer-Size Range , 2013 , mrss13-1548-n05-05
Copyright
Copyright © Materials Research Society 2013 

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

REFERENCES

Yacamán, M.J., Díaz, G., Gómez, A., Catalysis Today 23, 161–199, (1995).CrossRefGoogle Scholar
Chianelli, R. R., Ruppert, A.F., José-Yacamán, M., Vázquez, A., Cat. Today 23, 269 (1995).CrossRefGoogle Scholar
Stockman, R.H. et al. . Journal of Catalysis, 102, (1995).Google Scholar
Jellinek, F., Brauer, G., Müller, H., Nature (London) 185 (1960) 376.CrossRefGoogle Scholar
Ramos, M., Ferrer, D. A., José-Yacamán, M., Berhault, G., Torres, B. and Chianelli, R. R., MRS Proceedings, 1217, (2009).CrossRefGoogle Scholar
Castro-Guerrero, C. F., Deepak, F. L., Ponce, A., Cruz-Reyes, J., Del Valle-Granados, M., Fuentes-Moyado, S., Galván, D. H. and José-Yacamán, M., Catal. Sci. Technol., 2011, 1, 1024–1031.CrossRefGoogle Scholar
Chianelli, R., Berhault, G., Torres, B., Catalysis Today, 147, 275–286, (2009).CrossRefGoogle Scholar
Nogueira, A., Znaiguia, R., Uzio, D., Afanasiev, P., Berhault, G., Applied Catalysis A: General, Volumes 429–430, 92–105, (2002).Google Scholar
Santiago, P., Ascencio, J.A., Mendoza, D., Pérez-Alvarez, M., Espinosa, A., Reza-Sangermán, C., Schabes-Retchkiman, P., Camacho-Bragado, G.A., José-Yacamán, M., Appl. Phys. A 78, 513–518 (2004).CrossRefGoogle Scholar
Ramos, M.A., Correa, V., Torres, B., Flores, S., Farias Mancilla, J.R., and Chianelli, R.R., Revista Mexicana de Física, 57(3) 220–223, (2011).Google Scholar
Rosentsveig, R., Margolin, A., Feldmann, Y., Popovitz-Biro, R. and Tenne, R., Microscopy and Microanalysis, 8, 1128–1129, (2002).CrossRefGoogle Scholar
Ramos, M., Ferrer, D., Martinez-Soto, E., Lopez-Lippmann, H., Torres, B., Berhault, G., Chianelli, R. R., Ultramicroscopy (2012) (In press).Google Scholar
Sheng Wang, M., Kaplan-Ashiri, Ifat, Long Wei, X., Rosentsveig, R., Wagner, H. D., Tenne, R., and Mao Peng, L., Nano Res (2008) 1: 22 31 CrossRefGoogle Scholar
Vazquez, A., Materials Letters 35, (1998).Google Scholar