Ni–Ru bimetallic catalysts for the CO2 reforming of methane

Crisafulli, C.; Scirè, Salvatore; Minicò, Simona; Solarino, L.

doi:10.1016/s0926-860x(01)00585-3

Cited by 166 publications

(93 citation statements)

References 31 publications

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“…Our studies have revealed that Ru increases both the reducibility of Ni oxide species and Ni dispersion. A similar promoting action of the second metal has been reported elsewhere [7,8]. Some researches suggest that the second metal as a promoter affects catalytic performance by preventing the formation of carbonaceous deposits [9,10] or inducing a cluster or ligand effect [11].…”

Section: Introductionsupporting

confidence: 75%

Properties and Activity of Al2O3 + ZSM-5 Supported Ni and NiRu Catalysts in 1-Methylnaphthalene Hydrogenation: Effect of Ni Incorporation Method and Calcining Procedure

Masalska

2008

Catal Lett

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Ni (8 wt.% NiO) and NiRu (8 wt.% NiO and 1.1 wt.% RuO 2 ) dewaxing catalysts containing a ZSM-5 zeolite were examined in the hydroconversion of 1-methylnaphthalene. The effect of the Ni incorporation method and thermal treatment of the Ni catalyst was examined. The catalysts were characterized by XRF, N 2 -sorption, TPR, H 2 -chemisorption, XPS, XRD and TPD-NH 3 . It has been found that the use of calcination in air for the decomposition of nickel nitrate deteriorates the activity of the Ni catalyst to the greatest extent. Ru not only enhances catalyst activity but also reduces the differences in activity resulting from the various methods of Ni catalyst preparation.

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Section: Introductionsupporting

confidence: 75%

Properties and Activity of Al2O3 + ZSM-5 Supported Ni and NiRu Catalysts in 1-Methylnaphthalene Hydrogenation: Effect of Ni Incorporation Method and Calcining Procedure

Masalska

2008

Catal Lett

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“…Generally, the high frequency band at 2100-2000 cm -1 can be assigned to linear adsorbed CO on Ni 0 , and the low frequency band at 2000-1750 cm -1 is attributed to two or three fold bridge adsorbed CO on Ni 0 [13][14][15][16][17][18][19][20][21][22][23][24][25]. The band at 2058 cm -1 is initially more intense than the band at 2082 cm -1 .…”

Section: Ir Study Of Co Adsorptionmentioning

confidence: 99%

CO Adsorbed Infrared Spectroscopy Study of Ni/Al2O3 Catalyst for CO2 Reforming of Methane

2007

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CO adsorbed infrared spectroscopy study was conducted in this work in order to better understand the significantly improved anti-coke performance of Ni/Al 2 O 3 catalyst obtained via argon glow discharge plasma treatment. The present study revealed a significant decrease of linear to bridge (L/B) adsorbed CO for glow discharge plasma treated Ni/Al 2 O 3 , compared to that for untreated Ni/Al 2 O 3 , indicating an enhancement of close packed plane concentration. This structure change leads to lower methane turnover frequency (TOF) and better balance of carbon formation-gasification, resulting in better anti-coke property of Ni/Al 2 O 3 for CO 2 reforming of methane.

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“…Liu et al [28] studied adsorption characteristics of atomic nitrogen on ruthenium surfaces, they found that atomic nitrogen always preferably occupies the high coordination sites on Ru surfaces. Carmelo Crisafulli et al [29] have studied Ni-Ru bimetallic catalysts for the CO 2 reforming of methane. Romain Berthoud et al [30] have studied hydrogen and oxygen adsorption stoichiometries on silica supported ruthenium nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Theoretical Study of Hydrogen Adsorption on Ruthenium Clusters

Yan

Jing

et al. 2011

J Clust Sci

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The geometries, stabilities, electronic, and magnetic properties of hydrogen adsorption on Ru n clusters have been systematically investigated by using density functional theory with generalized gradient approximation. The result indicates the absorbed species does not lead to a rearrangement of the basic cluster. For n [ 2, three different adsorption patterns are found for the Ru n H 2 complexes: One H atom binds to the Ru top site, and another H binds to the bridge site for n = 3, 5, 6, 8; bridge site adsorption for n = 4; hollow site and top site adsorption for n = 7. The adsorption energies display oscillation and reach the peak at n = 2, 4, 7, implying their high chemical reactivity. The small electron transferred number between H atoms and Ru n clusters indicates that the interaction between H atoms and Ru n clusters is small. When H 2 is absorbed on the Ru n clusters, the chemical activity of corresponding clusters is dramatically increased. The absorbed H 2 can lead to an oscillatory behavior of the magnetic moments, and this behavior is rooted in the electronic structure of the preceding cluster and the changes in the magnetic moment are indicative of the relative ordering of the majority and minority LUMO's. The second order difference indicates 5 is magic number in Ru n H 2 and Ru n clusters.

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Ni–Ru bimetallic catalysts for the CO2 reforming of methane

Cited by 166 publications

References 31 publications

Properties and Activity of Al2O3 + ZSM-5 Supported Ni and NiRu Catalysts in 1-Methylnaphthalene Hydrogenation: Effect of Ni Incorporation Method and Calcining Procedure

Properties and Activity of Al2O3 + ZSM-5 Supported Ni and NiRu Catalysts in 1-Methylnaphthalene Hydrogenation: Effect of Ni Incorporation Method and Calcining Procedure

CO Adsorbed Infrared Spectroscopy Study of Ni/Al2O3 Catalyst for CO2 Reforming of Methane

Theoretical Study of Hydrogen Adsorption on Ruthenium Clusters

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