Hostname: page-component-78c5997874-m6dg7 Total loading time: 0 Render date: 2024-11-10T08:29:08.746Z Has data issue: false hasContentIssue false
  • English
  • Français

Structure Effects of High Surface Area Molybdenum Nitride Powders, Macrocrystals and Nanoparticles as Catalysts for Thiophene Desulfurization

Published online by Cambridge University Press:  15 February 2011

K. L. Roberts  and
E. J. Markel
K. L. Roberts
Affiliation:
Chemical Engineering Department, N.C. A&T State University, Greensboro, NC 27411, kroberts@ncat.edu
E. J. Markel
Affiliation:
Exxon Polymer Research Center, Exxon Research and Engineering Company, Baytown, TX 77520
Get access

Abstract

Mo2N powder, macrocrystals and nanoparticles and porous Mo metal were synthesized using temperature programmed reduction of MoO3 powder and crystals with reactant feed gases consisting of NH3 N2/H2 mixtures and pure H2. The Mo-based catalysts were characterized using BET, XRD, TGA, SEM, and STM. The Mo-based catalysts were also analyzed for the hydrodesulfurization (HDS) of thiophene. The relatively lower surface area Mo2N macrocrystalline catalysts (SSA = 44 m2/g) have a greater area specific activity than that of the higher surface area Mo2N powder catalysts (SSA = 150 m2/g) for the HDS of thiophene. Mo metal catalysts have significantly lower activity for thiophene HDS than Mo 2N catalysts and the HDS selectivities of non-sulfided Mo metal catalysts are significantly different from those of Mo 2N catalysts.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 549: Symposium FF – Advanced Catalytic Materials - 1998 , 1998 , 51
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. Volpe, L. and Boudart, M., J. Solid State Chem., 59, p. 332 (1985).Google Scholar
2. Ranhorta, G.S., Haddix, G.W., Bell, A.T., and Reimer, J.A., J. Catal., 108, p. 24 (1987).Google Scholar
3. Choi, J.G, Curl, R.L., and Thompson, L.T., J Catal., 146, p. 218 (1994).Google Scholar
4. Wise, R.S. and Markel, E.J., J Catal., 145, p. 335 (1994).Google Scholar
5. Roberts, K.L. and Markel, E.J., J. Phys. Chem., 98, p. 4083 (1994).Google Scholar
6. Volpe, L. and Boudart, M., J. Phys. Chem., 90, p. 4878 (1986).Google Scholar
7. Wise, R.S. and Markel, E.J., J. Catal., 145, p. 344 (1994)Google Scholar
8. Ranhorta, G.S., Bell, A.T., and Reimer, J.A., J. Catal., 108, p. 40 (1987).Google Scholar
9. Oyama, S.T., Catal. Today, 15, p. 279 (1992).Google Scholar
10. Schlatter, J.C., Oyama, S.T., Metcalfe, J.E., and Lambert, J.M., Ind. Eng. Chem. Res., 27, p. 1648 (1988).Google Scholar
11. Choi, J.G, Brenner, J.R., Colling, C.W., Demczyk, B.G., Dunning, J.L., and Thompson, L.T., Catal. Today, 15, p. 201 (1992).Google Scholar
12. Markel, E.J. and Van Zee, J.W., J. Catal., 126, p. 643 (1990).Google Scholar
13. Nagai, M., Miyao, J., and Tsuboi, T., Catal. Lett., 18, p. 9 (1993).Google Scholar
14. Daage, M. and Chianelli, R.R., J. Catal., 149, p. 414 (1994).Google Scholar
15. JCPDS X-ray Powder Diffraction Inorganic Reference Data, 1987.Google Scholar
16. Klug, H.P. and Alexander, L.E., in “X-Ray Diffraction Procedures”, p. 511, John Wiley and Sons, Inc., New York (1962).Google Scholar