Naphthalene hydrogenation over a NiMo/γ-Al2O3 catalyst: Experimental study and kinetic modelling

Romero, Carlos Montalvo; Thybaut, Joris W.; Marin, Guy

doi:10.1016/j.cattod.2007.06.074

Cited by 35 publications

(16 citation statements)

References 42 publications

(62 reference statements)

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“…We report here the systematic synthesis and characterization of three different binary oxide systems: NiO-Co 3 O 4 , NiO-MoO 3 , and NiO-CuO, all of which are used extensively in numerous types of catalytic reactions. [33][34][35] In addition, improvements in our LF-FSP system appear to offer the potential to rapidly synthesize sets of materials within selected phase space, in principle allowing us to optimize a given metal oxide system for specific properties as would be done using traditional combinatorial processing methods.…”

Section: Resultsmentioning

confidence: 99%

Systematic synthesis of mixed-metal oxides in NiO–Co3O4, NiO–MoO3, and NiO–CuO systems via liquid-feed flame spray pyrolysis

2008

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Section: Resultsmentioning

confidence: 99%

Systematic synthesis of mixed-metal oxides in NiO–Co3O4, NiO–MoO3, and NiO–CuO systems via liquid-feed flame spray pyrolysis

2008

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“…According to the hydrocracking mechanism, generated hydrogen radicals attack aromatic rings and sulfur bridges in the asphaltene structure, resulting in dealkylation and hydrocracking [27,28]. NiMo sulfides in the catalysts are active hydrogenation sites [29]. These catalytically active sites produce relatively large molecules by hydrogenation.…”

Section: Hydrocracking Of Vrmentioning

confidence: 99%

Macroporous NiMo/alumina catalyst for the hydrocracking of vacuum residue

Kim

Nguyen‐Huy

Shin

2014

Reac Kinet Mech Cat

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We prepared a macro-mesoporous NiMo/alumina catalyst by the introduction of macroporosity to an alumina support, and tested its catalytic performance in the hydrocracking of vacuum residue for the first time. In this reaction, the use of the macro-mesoporous NiMo/alumina catalyst clearly led to a more desirable product distribution-a higher liquid yield and lower gas yield-than a mesoporous NiMo/alumina catalyst. This indicates that the macro-mesoporous catalyst structure facilitated hydrogenation relative to the mesoporous catalyst; for the latter, hydrocracking was relatively dominant. N 2 adsorption/desorption experiments confirmed that NiMo impregnation reduced the pore size and volume, as well as the surface area, implying that the NiMo phases were located inside the mesopores and macropores. Macroporosity in the alumina support played an important role in improving the accessibility of vacuum residue to the NiMo active sites located inside pores, which are responsible for hydrogenation. By promoting hydrogenation, the macro-mesoporous NiMo/alumina catalyst increased the liquid yield of the hydrocracking of vacuum residue.Electronic supplementary material The online version of this article (

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Section: Introductionmentioning

confidence: 99%

“…However, the high cost and low abundance of these materials retard its commercial use. Transition metal catalysts such as Ni, Co, W metals supported on SiO 2 -Al 2 O 3 , ZrO 2 , TiO 2 or activated carbon [15][16][17][18][19][20] are adopted for the hydrogenation of naphthalene; however the development of novel materials for the enhancement in tetralin selectivity are needed.Recently a new group of transition metal phosphide catalysts have attracted increasing attention due to their high activity [21][22][23][24][25][26][27][28][29]. The overall activity of transition metal phosphide catalysts in the simultaneous hydrodesulphurization of dibenzothiophene, hydrodenitrogenation of quinoline and deoxygenation of ethanol was in the order of Fe 2 P < Co 2 P < MoP < Ni 2 P [26-29].…”

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confidence: 99%