Online citations, reference lists, and bibliographies.
← Back to Search

The Role Of Nickel In Pyridine Hydrodenitrogenation Over NiMo/Al2O3

Y. Park, H. Rhee
Published 1998 · Chemistry

Cite This
Download PDF
Analyze on Scholarcy
Al2O3 supported Mo, Ni, and NiMo/Al2O3 catalysts with various Ni contents were prepared to investigate the role of Ni as a promoter in a NiMo bimetallic catalyst system. The hydrodenitrogenation (HDN) reaction of pyridine as a catalytic probe was conducted over these catalysts under the same reaction conditions and the catalysts were characterized using BET surface area measurement, infrared spectroscopy, temperature programmed reduction, DRS and ESR. According to the results of reaction experiments, the NiMo/Al2O3 catalyst showed higher activity than Mo/Al2O3 catalyst in the HDN reaction and particularly the one with atomic ratio [Ni/(Ni+Mo)]=0.3 showed the best activity for the HDN of pyridine. The findings of this study lead us to suggest that the enhancement in the HDN activity with nickel addition could be attributed to the improvement in the reducibility of molybdenum and the formation of Ni-Mo-O phase.
This paper references
Electron spin resonance of supported and unsupported molybdenum hydrotreating catalysts
B. G. Silbernagel (1982)
The role of group VIII metal promoter in MoS2 and WS2 hydrotreating catalysts: I. ESR studies of CoMo, NiMo, and NiW catalysts
D. S. Thakur (1985)
Investigation of the Role of Nickel and the Effect of Gas Phase Sulfur Compounds on the Performance of Ni-Mo/γ-Al2O3 Hydrodenitrogenation Catalysts
U. S. Uzkan (1994)
Non-existence of synergism in the hydrodenitrogenation of pyridine over carbon-supported cobalt−molybdenum sulphide catalysts
J. Sobczak (1988)
Ni EXAFS studies of the Ni-Mo-S structure in carbon-supported and alumina-supported Ni-Mo catalysts
S. Louwers (1992)
Reducibility of Ni-Mo/Al2O3 Catalysts: A TPR Study
J. L. Brito (1993)
Study of nickel-molybdenum-.gamma.-aluminum oxide catalysts by x-ray photoelectron and Raman spectroscopy. Comparison with cobalt-molybdenum-.gamma.-aluminum oxide catalysts
P. Dufresne (1981)
Promoting effect of fluorine on cobalt—molybdenum/ titania hydrodesulfurization catalysts
J. Ramírez (1991)
Structural, magnetic, and optical properties of nickel oxide supported on .eta.- and .gamma.-aluminas
A. Cimino (1971)
The Role of Group Viii Metal Promoter in Mos2 and Ws2 Hydrotreating Catalysts .1. Electron-spin-resonance Studies of Co-mo, Ni-mo, and Ni-w Catalysts
D. S. Thakur (1985)
EPR studies on unsupported and alumina-supported sulfided CoMo hydrodesulfurization catalysts
E. Derouane (1986)
ESR studies on hydrodesulfurization catalysts : nickel- or cobalt-promoted sulfided tungsten- or molybdenum-containing catalysts
A.J.A. Konings (1981)
활성탄과 알루미나에 담지된 Mo 및 Co 촉매의 환원특성 연구
문상진 (1988)
Some effects of sulfiding of a NiMoAl2O3 catalyst on its activity for hydrodenitrogenation of quinoline
S. H. Yang (1983)
ESR Studies on Hydrodesulfurization Catalysts: Supported and Unsupported Sulfided Molybdenum and Tungsten Catalysts
Aja Ton Konings (1978)
Effect of nickel on the surface acidity of γ-alumina and alumina-supported nickel—molybdenum hydrotreating catalysts
A. Stanislaus (1989)
The use of pyridine and piperidine hdn as probe for activity of molybdenum-based hydrotreatment catalysts. The role of the nickel (part II)
M. Ledoux (1984)
Characterization of Silica-Supported Molybdenum Oxide and Tungsten Oxide. Reducibility of the Oxidic State versus Hydrodesulfurization Activity of the Sulfided State'
R. Thomas (1982)
Electron spin resonance of supported and unsupported molybdenum hydrotreating catalysts: I. Model system studies
B. G. Silbernagel (1982)
Comparative hydrodenitrogenation activity of molybdenum, Co–Mo and Ni–Mo alumina-supported catalysts
M. Ledoux (1990)

This paper is referenced by
Semantic Scholar Logo Some data provided by SemanticScholar