The effect of impregnation sequence on the hydrogenation activity and selectivity of supported Pt/Ni bimetallic catalysts

Biomass furfural-like compounds are chemicals that cannot be extracted from fossil materials, through which a large number of fine chemicals and fuel additives can be opened up, but one big efficiency problem during the transformation is the accumulation of oligomers. Here, we propose a novel and efficient Ru-Mo bimetallic catalyst for selective hydrogenation-rearrangement of furfural-like compounds. The result showed that an unprecedented rearrangement product selectivity of 89.1% to cyclopentanol was achieved under an optimized reaction condition over a 1%Ru−2.5%Mo/CNT catalyst reduced at 600°C. Subsequent characterization suggested that the catalyst presented with weak acidity and strong hydrogenation activity for the reaction, which not only ensures the smooth hydrogenation-rearrangement reaction but also inhibits the accumulation of furan polymers. These findings provide a convenient strategy to tune the catalytic performance of Mo-based catalysts by controlling the reduction and carburization conditions, which appear to be versatile for the rearrangement of furans and similar compounds.

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Effect of oxide support surface area on hydrogenation activity: Pt/Ni bimetallic catalysts supported on low and high surface area Al2O3 and ZrO2

Applied Catalysis A General ◽

10.1016/j.apcata.2011.09.007 ◽

2011 ◽

Vol 408 (1-2) ◽

pp. 87-95 ◽

Cited By ~ 14

Author(s):

William W. Lonergan ◽

Tiefeng Wang ◽

Dionisios G. Vlachos ◽

Jingguang G. Chen

Keyword(s):

Surface Area ◽

Bimetallic Catalysts ◽

High Surface ◽

High Surface Area ◽

Support Surface ◽

Hydrogenation Activity ◽

Oxide Support

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The effects of oxide supports on the low temperature hydrogenation activity of acetone over Pt/Ni bimetallic catalysts on SiO2, γ-Al2O3 and TiO2

Applied Catalysis A General ◽

10.1016/j.apcata.2010.11.023 ◽

2011 ◽

Vol 393 (1-2) ◽

pp. 44-49 ◽

Cited By ~ 22

Author(s):

Suitao Qi ◽

Beth A. Cheney ◽

Renyang Zheng ◽

William W. Lonergan ◽

Weiting Yu ◽

...

Keyword(s):

Low Temperature ◽

Bimetallic Catalysts ◽

Oxide Supports ◽

Hydrogenation Activity

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Ru–Ni/Al2O3 bimetallic catalysts with high catalytic activity for N-propylcarbazole hydrogenation

Catalysis Science & Technology ◽

10.1039/c9cy02528f ◽

2020 ◽

Vol 10 (7) ◽

pp. 2268-2276 ◽

Cited By ~ 3

Author(s):

Chenguang Li ◽

Ming Yang ◽

Zhenjie Liu ◽

Zhenlin Zhang ◽

Ting Zhu ◽

...

Keyword(s):

Activation Energy ◽

Catalytic Activity ◽

Catalytic Hydrogenation ◽

Bimetallic Catalysts ◽

High Catalytic Activity ◽

Hydrogenation Activity

The as-prepared 5 wt% Ru2.5Ni2.5/Al2O3 catalyst shows the best catalytic hydrogenation activity for NPCZ and the lowest hydrogenation activation energy.

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Network-Like Platinum Nanosheets Enabled by a Calorific-Effect-Induced-Fusion Strategy for Enhanced Catalytic Hydrogenation Performance

Frontiers in Chemistry ◽

10.3389/fchem.2021.818900 ◽

2022 ◽

Vol 9 ◽

Author(s):

Ting-Wen Chen ◽

Da-Wei Pang ◽

Jian-Xin Kang ◽

Dong-Feng Zhang ◽

Lin Guo

Keyword(s):

Catalytic Hydrogenation ◽

Graphite Oxide ◽

Bimetallic Catalysts ◽

Pt Nanoparticles ◽

Turnover Frequency ◽

Fusion Strategy ◽

Hydrogenation Activity ◽

Reduced Graphite Oxide ◽

Loading Amount

In this paper, we report the construction of network-like platinum (Pt) nanosheets based on Pt/reduced graphite oxide (Pt/rGO) hybrids by delicately utilizing a calorific-effect-induced-fusion strategy. The tiny Pt species first catalyzed the H2-O2 combination reaction. The released heat triggered the combustion of the rGO substrate under the assistance of the Pt species catalysis, which induced the fusion of the tiny Pt species into a network-like nanosheet structure. The loading amount and dispersity of Pt on rGO are found to be crucial for the successful construction of network-like Pt nanosheets. The as-prepared products present excellent catalytic hydrogenation activity and superior stability towards unsaturated bonds such as olefins and nitrobenzene. The styrene can be completely converted into phenylethane within 60 min. The turnover frequency (TOF) value of network-like Pt nanosheets is as high as 158.14 h−1, which is three times higher than that of the home-made Pt nanoparticles and among the highest value of the support-free bimetallic catalysts ever reported under similar conditions. Furthermore, the well dispersibility and excellent aggregation resistance of the network-like structure endows the catalyst with excellent recyclability. The decline of conversion could be hardly identified after five times recycling experiments.

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Structure and composition of metal particles in Pt-Sn/Al2O3 bimetallic catalysts

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100174527 ◽

1990 ◽

Vol 48 (4) ◽

pp. 278-279

Author(s):

A. Sachdev ◽

J. Schwank

Keyword(s):

Bimetallic Catalysts ◽

Bimetallic Catalyst ◽

Size Structure ◽

High Surface ◽

High Surface Area ◽

Metal Particles ◽

Alloy Formation ◽

Particle Size Range ◽

Oxide Supports ◽

Petroleum Fractions

Platinum - tin bimetallic catalysts have been primarily utilized in the chemical industry in the catalytic reforming of petroleum fractions. In this process the naphtha feedstock is converted to hydrocarbons with higher octane numbers and high anti-knock qualities. Most of these catalysts contain small metal particles or crystallites supported on high surface area insulating oxide supports. The determination of the structure and composition of these particles is crucial to the understanding of the catalytic behavior. In a bimetallic catalyst it is important to know how the two metals are distributed within the particle size range and in what way the addition of a second metal affects the size, structure and composition of the metal particles. An added complication in the Pt-Sn system is the possibility of alloy formation between the two elements for all atomic ratios.

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