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

Effect Of PH On Activity Of NiMo/Al2O3 Catalysts Prepared With Citric Acid In Simultaneous Hydrodesulfurization And Hydrodenitrogenation Reactions

Flávia de Almeida Braggio, M. D. Mello, B. Magalhães, J. L. Zotin, M. A. P. Silva
Published 2017 · Chemistry

Cite This
Download PDF
Analyze on Scholarcy
Share
NiMo/alumina catalysts were prepared by impregnation of metal precursors in the presence of citric acid (CA) at different pHs. Catalysts were characterized by nitrogen physisorption, X-ray diffraction, temperature programmed reduction of sulfided catalysts (TPR-S), temperature programmed sulfidation (TPS) and NO chemisorption of sulfided catalysts. Catalytic activity for dibenzothiophene (DBT) hydrodesulfurization (HDS) was studied in a trickle-bed reactor, with and without quinoline in the reaction feed. Results suggest that HDS of DBT occurs mainly by direct desulfurization route and CA addition at pH 3 was detrimental, resulting in a less active catalyst, which was confirmed by TOF calculations. Furthermore, TPR-S results show that the catalyst prepared at pH 3 presented less coordinatively unsaturated sites (CUS), being less active than the one synthesized at pH 1. Besides that, the catalyst prepared at pH 1 was less inhibited at higher quinoline concentrations.Graphical Abstract
This paper references
10.1016/S0167-2991(00)80896-4
TPR-S and TPS studies of CoMo and NiMo catalysts supported on Al2O3−TiO2 mixed oxides
L. Cedeño (2000)
10.1007/s10562-013-1090-7
Topological and Electronic Structure of Heterocyclic Compounds Adsorbed on Hydrotreating Catalysts
Diego Valencia (2013)
10.1016/S0167-2991(99)80040-8
Advances in deep desulfurization
H. Topsøe (1999)
10.1006/JCAT.2000.3088
Atomic-scale structure of Co-Mo-S nanoclusters in hydrotreating catalysts
J. V. Lauritsen (2001)
10.1016/S0022-1139(03)00054-X
Fluoride modification of Mo/Al2O3 catalysts characterization of the changes induced in support and Mo phases
R. Cuevas (2003)
10.1016/0021-9517(83)90010-6
Characterization of the structures and active sites in sulfided CoMoAl2O3 and NiMoAl2O3 catalysts by NO chemisorption
Nan-Yu Topsøe (1983)
10.1016/J.CATTOD.2010.05.011
Recent advances in the science and technology of ultra low sulfur diesel (ULSD) production
A. Stanislaus (2010)
10.1016/0021-9517(86)90036-9
Poisoning effect of nitrogen compounds on dibenzothiophene hydrodesulfurization on sulfided NiMo/Al2O3 catalysts and relation to gas-phase basicity
M. Nagai (1986)
10.1016/S0166-9834(00)81246-4
Active sites and support effects in hydrodesulfurization catalysts
H. Topsøe (1986)
10.1016/S0920-5861(96)00232-5
Hydrotreating catalysts, an old story with new challenges
P. Grange (1997)
10.1016/J.APCATB.2015.04.011
Investigation of co-effect of 12-tungstophosphoric heteropolyacid, nickel citrate and carbon-coated alumina in preparation of NiW catalysts for HDS, HYD and HDN reactions
P. Nikulshin (2015)
10.1016/J.CATTOD.2005.07.101
New trends in the concept of catalytic sites over sulfide catalysts
M. Vrinat (2004)
10.1006/JCAT.1999.2492
The Relationship between the Structure of NiMo/SiO2 Catalyst Precursors Prepared in the Presence of Chelating Ligands and the Hydrodesulfurization Activity of the Final Sulfided Catalysts
R. Cattaneo (1999)
10.1016/0021-9517(88)90328-4
Poisoning of thiophene hydrodesulfurization by nitrogen compounds
V. LaVopa (1988)
10.1016/J.MOLCATA.2010.02.020
Co–Mo catalysts for ultra-deep HDS of diesel fuels prepared via synthesis of bimetallic surface compounds
O. Klimov (2010)
10.1016/S1872-5813(09)60023-2
Influences of different phosphorus contents on NiMoP/Al2O3 hydrotreating catalysts
Tongna Zhou (2009)
10.1016/J.APCATA.2009.11.023
In situ XAFS study of the sulfidation of Co–Mo/B2O3/Al2O3 hydrodesulfurization catalysts prepared by using citric acid as a chelating agent
Takeshi Kubota (2010)
10.1016/J.JCAT.2007.04.013
Location and coordination of promoter atoms in Co- and Ni-promoted MoS2-based hydrotreating catalysts
J. V. Lauritsen (2007)
10.1016/J.CATTOD.2015.11.002
Investigation of co-promotion effect in NiCoMoS/Al2O3 catalysts based on Co2Mo10-heteropolyacid and nickel citrate
A. Mozhaev (2016)
10.1016/0021-9517(83)90099-4
The chemisorption of O2 and NO on reduced and sulfided molybdena-alumina catalysts
J. Valyon (1983)
Nikulshin PA, Pimerzin AlA, Maslakov KI, Pimerzin AA (2016
AV Mozhaev (2016)
10.1016/j.jcis.2010.04.022
Hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene over NiMo and CoMo sulfide catalysts: kinetic modeling approach for estimating selectivity.
Hamdy Farag (2010)
Caracterización de catalizadores Mo, NiMo y CoMo en estado sulfurado
Rosimara Zanella (2002)
10.1016/S0926-860X(97)00035-5
On the flexibility of the active phase in hydrotreating catalysts
S. Eijsbouts (1997)
10.1016/0021-9517(91)90276-A
The Effect of Phosphate on the Hydrodenitrogenation Activity and Selectivity of Alumina–Supported Sulfided Mo, Ni and Ni–Mo Catalysts
S. Eijsbouts (1991)
10.1016/0378-3820(93)90089-M
On the formation of type I and type II NiMoS phases in NiMo/Al2O3 hydrotreating catalysts and its catalytic implications
J. Veen (1993)
10.1016/J.JCAT.2013.03.027
Behavior of NiMo/SBA-15 catalysts prepared with citric acid in simultaneous hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene
T. Klimova (2013)
10.1007/BF00824029
Effect of MoS2 morphology on the HDS activity of hydrotreating catalysts
M. Vrinat (1994)
10.1016/J.APCATA.2007.01.002
The role of Co–Mo–S type structures in hydrotreating catalysts
H. Topsøe (2007)
10.1002/cctc.201500706
Understanding Ni Promotion of MoS2/γ‐Al2O3 and its Implications for the Hydrogenation of Phenanthrene
Eva Schachtl (2015)
10.1016/J.APCATA.2009.01.009
Characterization and hydrotreating performance of NiMo catalysts supported on nanostructured titanate
E. Morgado (2009)
10.1007/S10562-008-9777-X
Deep HDS of Diesel Fuel: Inhibiting Effect of Nitrogen Compounds on the Transformation of the Refractory 4,6-Dimethyldibenzothiophene Over a NiMoP/Al2O3 Catalyst
V. Rabarihoela-Rakotovao (2009)
10.1016/J.JCAT.2011.02.002
Spectroscopy, microscopy and theoretical study of NO adsorption on MoS2 and Co–Mo–S hydrotreating catalysts
Nan-Yu Topsøe (2011)
10.1006/JCAT.1999.2784
A Quick EXAFS Study of the Sulfidation of NiMo/SiO2 Hydrotreating Catalysts Prepared with Chelating Ligands
R. Cattaneo (2000)
10.1016/0021-9517(81)90114-7
In situ Mössbauer emission spectroscopy studies of unsupported and supported sulfided CoMo hydrodesulfurization catalysts: Evidence for and nature of a CoMoS phase
H. Topsøe (1981)
10.1016/J.JCAT.2004.05.002
Hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene over sulfided NiMo/γ-Al2O3, CoMo/γ-Al2O3, and Mo/γ-Al2O3 catalysts
M. Egorova (2004)
10.1016/J.FUEL.2007.07.020
Nickel and cobalt promoted tungsten and molybdenum sulfide mesoporous catalysts for hydrodesulfurization
E. Rodríguez-Castellón (2008)
10.1016/0920-5861(91)80033-6
The reactions involved in hydrodenitrogenation
G. Pérot (1991)
10.1007/s10562-012-0860-y
Comparative Activity of Ni–W and Co–Mo Sulfides Using Transition Metal Oxides as Precursors in HDS Reaction of DBT
J. M. Quintana-Melgoza (2012)
10.1016/S0920-5861(03)00408-5
Performance of CoMoS catalysts supported on nanoporous carbon in the hydrodesulfurization of dibenzothiophene and 4,6-dimethyldibenzothiophene
J. Lee (2003)
10.1016/S0926-860X(99)00363-4
Fundamental comparison studies on hydrodesulfurization of dibenzothiophenes over CoMo-based carbon and alumina catalysts
H. Farag (2000)
10.1016/J.JCAT.2011.04.001
Effect of the support on the high activity of the (Ni)Mo/ZrO2–SBA-15 catalyst in the simultaneous hydrodesulfurization of DBT and 4,6-DMDBT
O. Gutiérrez (2011)
10.1016/J.JCAT.2014.09.021
Analysis of the role of citric acid in the preparation of highly active HDS catalysts
Perla Castillo-Villalón (2014)
10.1016/0021-9517(92)90190-S
The effect of modifying alumina with sulfate and phosphate on the catalytic properties of Mo/Al2O3 in HDS reaction
Seo Il Kim (1992)
10.1016/j.apcata.2009.03.006
Preparation of Co–Mo/B2O3/Al2O3 catalysts for hydrodesulfurization: Effect of citric acid addition
Nino Rinaldi (2009)
10.1016/J.FUEL.2014.04.038
Preparation of NiMo/KIT-6 hydrodesulfurization catalysts with tunable sulfidation and dispersion degrees of active phase by addition of citric acid as chelating agent
Huadong Wu (2014)
10.1006/JCAT.2001.3170
An XAFS Study of the Different Influence of Chelating Ligands on the HDN and HDS of γ-Al2O3-Supported NiMo Catalysts
R. Cattaneo (2001)
10.1016/S0926-860X(00)00620-7
Inhibition effects of nitrogen compounds on the hydrodesulfurization of dibenzothiophene: Part 2
G. Laredo (2001)
10.1016/S0378-3820(02)00016-4
Catalytic hydrodesulfurization of a light gas oil over a NiMo catalyst: kinetics of selected sulfur components
P. Šteiner (2002)
10.1016/J.CATCOM.2012.02.003
Kinetic study of NiMo/SBA-15 catalysts prepared with citric acid in hydrodesulfurization of dibenzothiophene
Diego Valencia (2012)
10.1016/J.JCAT.2010.03.015
Promoter effect of vanadia on Co/Mo/Al2O3 catalyst for deep hydrodesulfurization via the hydrogenation reaction pathway
Ting-Mu Chen (2010)



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