Fouling of a platinum-rhenium reforming catalyst using model reforming reactions

Jossens, L.W.

doi:10.1016/0021-9517(82)90257-3

Cited by 62 publications

(35 citation statements)

References 27 publications

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“…Evidence for this inhibitory role abounds in the literature. 42,43 The evidence provided here supports this assertion and further elaborates it. On the Pt catalyst, the dispersion ranged between 0.45 and 0.11 after oxygen treatment and between 0.33 and 0.09 on subsequent reduction.…”

Section: Discussionsupporting

confidence: 84%

Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al₂O₃ and Pt‐Re/Al₂O₃ catalysts

Susu¹

2008

J of Chemical Tech & Biotech

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Section: Discussionsupporting

confidence: 84%

Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al₂O₃ and Pt‐Re/Al₂O₃ catalysts

Susu¹

2008

J of Chemical Tech & Biotech

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“…The addition of Re may have diluted this affect, and a lower value of K' is the result. Similar kinetics over Pt/Al 2 O 3 and Pt‐Re/Al 2 O 3 has also been mentioned in the literature 35,37 .…”

Section: Resultssupporting

confidence: 83%

An exclusive kinetic model for the methylcyclohexane dehydrogenation over alumina‐supported Pt catalysts

Akram

Aslam

AlHumaidan

et al. 2020

Int J of Chemical Kinetics

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The experimental data of six different types of Pt-containing alumina catalysts are used to study the detailed and rigorous kinetics of the methylcyclohexane dehydrogenation reaction. A large number of kinetic rate equations were formulated using the power law kinetics and the Langmuir-Hinshelwood-Hougen-Watson (LHHW) kinetics, which were tested against the experimental data. For each catalyst, the elementary reaction step "the loss of first molecular hydrogen" in the LHHW single-site surface reaction mechanism was observed to be the rate-determining step. The form of the kinetic rate model developed in the study is believed to be applicable to any Pt-loaded alumina catalyst. K E Y W O R D Sdehydrogenation, Langmuir-Hinshelwood-Hougen-Watson kinetics, methylcyclohexane, organic hydride, Pt catalystInt J Chem Kinet. 2020;52:415-449.

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“…Oxide-supported bimetallic heterogeneous catalysts consisting of late-transition and noble metals play a significant role in chemical transformations, with demonstrated enhancements in catalytic activity, product selectivity, and catalyst stability as compared to supported monometallic catalysts. − For example, bimetallic catalysts have been shown to exhibit improvements over monometallic catalysts in various catalytic performance metrics for applications including petrochemical processing, ammonia synthesis, three-way catalysis, among many others. − While the idea of exploiting the properties of multiple catalytic materials to optimize performance is appealing, bimetallic catalyst design is complicated by the phase space of physical effects that control the relative geometries and organization of the constituent elements at the surface of bimetallic nanoparticles.…”

Section: Introductionmentioning

confidence: 99%

Effects of Cu–Ni Bimetallic Catalyst Composition and Support on Activity, Selectivity, and Stability for Furfural Conversion to 2-Methyfuran

Seemala

Cai

Kumar

et al. 2017

ACS Sustainable Chem. Eng.

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Supported bimetallic catalysts have been demonstrated to enhance catalytic activity, product selectivity, and catalyst stability over supported monometallic catalysts for a range of catalytic reactions. However, the surface structure and composition of bimetallic particles can differ significantly from the bulk due to variations in surface energies and interactions with adsorbates, making the design of bimetallic catalysts with targeted properties and reactivities challenging. We report here the influence of catalyst support (Al 2 O 3 and TiO 2 ) on the surface composition and structure of bimetallic Cu−Ni nanoparticles with varying Ni weight loading (0, 0.5, 1.5, 3, 5, and 10 wt %) at a constant Cu loading of 5 wt % and a correlation to catalytic reactivity and stability in furfural (FF) hydrodeoxygenation (HDO). Analysis via depth-profiling Xray photoelectron spectroscopy suggested that over a range of Ni compositions in Cu−Ni/Al 2 O 3 catalysts, Cu and Ni were distributed evenly within bimetallic particles, although Cu and Ni segregated into contiguous monometallic domains at the particle surfaces. In contrast, on Cu−Ni/TiO 2 catalysts near surface alloys formed, which were enriched in Cu at the particle surfaces and exposed only dispersed Ni species. The difference in compositional structure of the Cu−Ni particles on TiO 2 and Al 2 O 3 was attributed to strong and specific interactions between Ni and TiO 2 . On both supports the addition of Ni to Cu catalysts resulted in enhancements in the rate of FF HDO, although Al 2 O 3 supported bimetallic catalysts promoted hydrogenation of the furan ring, forming mostly furfural alcohol and tetrahydrofurfuryl alcohol, while TiO 2 supported catalysts mostly resulted in carbonyl hydrogenolysis to form methyl furan (MF). Through optimization of support and bimetallic compositions, low-cost bimetallic catalysts were developed that demonstrated >90% MF yields in FF HDO with good stability and regenerability.

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Fouling of a platinum-rhenium reforming catalyst using model reforming reactions

Cited by 62 publications

References 27 publications

Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al₂O₃ and Pt‐Re/Al₂O₃ catalysts

Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al₂O₃ and Pt‐Re/Al₂O₃ catalysts

An exclusive kinetic model for the methylcyclohexane dehydrogenation over alumina‐supported Pt catalysts

Effects of Cu–Ni Bimetallic Catalyst Composition and Support on Activity, Selectivity, and Stability for Furfural Conversion to 2-Methyfuran

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Fouling of a platinum-rhenium reforming catalyst using model reforming reactions

Cited by 62 publications

References 27 publications

Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al2O3 and Pt‐Re/Al2O3 catalysts

Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al2O3 and Pt‐Re/Al2O3 catalysts

An exclusive kinetic model for the methylcyclohexane dehydrogenation over alumina‐supported Pt catalysts

Effects of Cu–Ni Bimetallic Catalyst Composition and Support on Activity, Selectivity, and Stability for Furfural Conversion to 2-Methyfuran

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Product

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Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al₂O₃ and Pt‐Re/Al₂O₃ catalysts

Comparative study of aromatization selectivity during N‐heptane reforming on sintered Pt/Al₂O₃ and Pt‐Re/Al₂O₃ catalysts