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Title: Evolution of the Active Phase of CoMo/Al2O3 Catalysts under Industrial Conditions: a High-Pressure MES Study

Abstract

The behavior of CoMo/Al2O3 catalysts sulfided in H2S/H2 gas mixture, under industrial conditions, was investigated using Moessbauer emission spectroscopy (MES). An intermediate Co-Mo phase is formed after increasing the sulfidation pressure to 4 MPa, favoring the Co-Mo-S phase formation. An increase in the quadrupole splitting value of the Co-sulfide species after treatment at 573 K is proposed as a prerequisite for the formation of ideal Co-Mo-S structures.

Authors:
; ; ;  [1]
  1. Interfaculty Reactor Institute, Delft University of Technology, 2629 JB Delft (Netherlands)
Publication Date:
OSTI Identifier:
20722144
Resource Type:
Journal Article
Journal Name:
AIP Conference Proceedings
Additional Journal Information:
Journal Volume: 765; Journal Issue: 1; Conference: International symposium on the industrial applications of the Moessbauer effect, Madrid (Spain), 4-8 Oct 2004; Other Information: DOI: 10.1063/1.1923630; (c) 2005 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0094-243X
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; ALUMINIUM OXIDES; CATALYSIS; CATALYSTS; COBALT COMPOUNDS; EMISSION SPECTROSCOPY; HYDROGEN; HYDROGEN SULFIDES; MIXTURES; MOESSBAUER EFFECT; MOLYBDENUM COMPOUNDS; PRESSURE RANGE MEGA PA 01-10; QUADRUPOLES; SULFIDATION

Citation Formats

Dugulan, A.I., Overweg, A.R., Craje, M.W.J., and Kearley, G.J. Evolution of the Active Phase of CoMo/Al2O3 Catalysts under Industrial Conditions: a High-Pressure MES Study. United States: N. p., 2005. Web. doi:10.1063/1.1923630.
Dugulan, A.I., Overweg, A.R., Craje, M.W.J., & Kearley, G.J. Evolution of the Active Phase of CoMo/Al2O3 Catalysts under Industrial Conditions: a High-Pressure MES Study. United States. doi:10.1063/1.1923630.
Dugulan, A.I., Overweg, A.R., Craje, M.W.J., and Kearley, G.J. Tue . "Evolution of the Active Phase of CoMo/Al2O3 Catalysts under Industrial Conditions: a High-Pressure MES Study". United States. doi:10.1063/1.1923630.
@article{osti_20722144,
title = {Evolution of the Active Phase of CoMo/Al2O3 Catalysts under Industrial Conditions: a High-Pressure MES Study},
author = {Dugulan, A.I. and Overweg, A.R. and Craje, M.W.J. and Kearley, G.J.},
abstractNote = {The behavior of CoMo/Al2O3 catalysts sulfided in H2S/H2 gas mixture, under industrial conditions, was investigated using Moessbauer emission spectroscopy (MES). An intermediate Co-Mo phase is formed after increasing the sulfidation pressure to 4 MPa, favoring the Co-Mo-S phase formation. An increase in the quadrupole splitting value of the Co-sulfide species after treatment at 573 K is proposed as a prerequisite for the formation of ideal Co-Mo-S structures.},
doi = {10.1063/1.1923630},
journal = {AIP Conference Proceedings},
issn = {0094-243X},
number = 1,
volume = 765,
place = {United States},
year = {2005},
month = {4}
}