Nitrogen-doped carbon supported PtPd alloy nanoparticles exhibiting high catalytic activity for cyclohexane dehydrogenation under low temperatures

Wang, Jian; Shi, Junlian; Wang, Shuai; Fan, Shiguang; Guo, Aijun; Wang, Zongxian; Li, He

doi:10.1016/j.fuel.2023.128266

Cited by 10 publications

(3 citation statements)

References 67 publications

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“…The experimental results show the excellent catalytic activity with a TOF of 90.07 mmol g −1 metal min −1 and 100% H 2 purity at 180 • C. The density functional theory (DFT) calculations suggest that the presence of Pd promotes the specific adsorption and activation of CHX on the Pt surface. A similar enhancement has also been seen when substituting Pd with Ru and Ir [110]. Extraordinary Pt activity enhancement in a reversible hydrogenation-dehydrogenation catalyst has been described by Chen et al [111].…”

Section: Benzene-cyclohexane Loopsupporting

confidence: 66%

“…Nevertheless, some materials recently proposed still contain Pt mixed with other elements. Wang et al [110] recently studied the catalytic performance of PtPd alloy nanoparticles supported on nitrogen-doped carbon. The experimental results show the excellent catalytic activity with a TOF of 90.07 mmol g −1 metal min −1 and 100% H 2 purity at 180 • C. The density functional theory (DFT) calculations suggest that the presence of Pd promotes the specific adsorption and activation of CHX on the Pt surface.…”

Section: Benzene-cyclohexane Loopmentioning

confidence: 99%

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Hydrogen Carriers: Scientific Limits and Challenges for the Supply Chain, and Key Factors for Techno-Economic Analysis

Clematis,

Bellotti,

Rivarolo

et al. 2023

Energies

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Hydrogen carriers are one of the keys to the success of using hydrogen as an energy vector. Indeed, sustainable hydrogen production exploits the excess of renewable energy sources, after which temporary storage is required. The conventional approaches to hydrogen storage and transport are compressed hydrogen (CH2) and liquefied hydrogen (LH2), which require severe operating conditions related to pressure (300–700 bar) and temperature (T < −252 °C), respectively. To overcome these issues, which have hindered market penetration, several alternatives have been proposed in the last few decades. In this review, the most promising hydrogen carriers (ammonia, methanol, liquid organic hydrogen carriers, and metal hydrides) have been considered, and the main stages of their supply chain (production, storage, transportation, H2 release, and their recyclability) have been described and critically analyzed, focusing on the latest results available in the literature, the highlighting of which is our current concern. The last section reviews recent techno-economic analyses to drive the selection of hydrogen carrier systems and the main constraints that must be considered. The analyzed results show how the selection of H2 carriers is a multiparametric function, and it depends on technological factors as well as international policies and regulations.

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Section: Benzene-cyclohexane Loopsupporting

confidence: 66%

Section: Benzene-cyclohexane Loopmentioning

confidence: 99%

Hydrogen Carriers: Scientific Limits and Challenges for the Supply Chain, and Key Factors for Techno-Economic Analysis

Clematis,

Bellotti,

Rivarolo

et al. 2023

Energies

View full text Add to dashboard Cite

show abstract

“…As can be seen from Table S3, the d-band center of Pd is closer to the Fermi level, while the d-band center of Pt is more compatible with AB. In addition, from the point of view of adsorption energy, Pt is easier to adsorb AB (as shown in Tables S4 and S5), and Pt is usually the default active site in the literature, 40,41 indicating that the addition of Pd regulates the activity of Pt at the active site, which is conducive to the improvement of catalytic performance. It is also found that the d-band center of PtPd 3 in Pt, Pt 3 Pd, PtPd, and PtPd 3 is closer S4 and S5.…”

Section: Resultsmentioning

confidence: 99%

PVP-Adjusted Crystal Surfaces of PtPd Nanoparticles for Enhancing the Catalytic Hydrolysis of Ammonia Borane

Wang,

Hui,

Jia

et al. 2024

ACS Appl. Nano Mater.

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In recent years, the morphology control of nanoparticles (NPs) has been an effective way to improve the catalytic performance of PtPd alloys. Polyvinylpyrrolidone (PVP) can be used as a multifunctional orientation and stabilizer for monodisperse nanostructure synthesis. In ethylene glycol (EG), PVP stabilizes the crystal plane by the interaction of the carbonyl group of the repeating unit with the metal surface. In this article, a series of Pt, Pd, and PtPd alloy NPs with different morphologies within 10 nm were synthesized by changing the content of PVP to explore the effects of different crystal plane exposure ratios on the morphology. The DFT results showed that different PVP contents would expose different crystal planes of NPs. The NPs exposed to different crystal planes have different effects on the hydrolysis performance of ammonia borane (AB). An appropriate {100}/{111} ratio was conducive to the adsorption of H2O and the desorption of H2 so as to promote the hydrolysis of AB. The morphology adjustment has endowed PtPd alloy NPs with superior AB hydrolysis performance. This work provides more insights for improving catalytic performance through the control of the morphology and crystal plane.

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Ultrafine palladium nanoparticles deposited on Ni, N co-doped carbon to boost dehydrogenation efficiency of perhydro-N-phenylcarbazole

Li,

Yang,

Yang

et al. 2024

Chemical Engineering Journal

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Nitrogen-doped carbon supported PtPd alloy nanoparticles exhibiting high catalytic activity for cyclohexane dehydrogenation under low temperatures

Cited by 10 publications

References 67 publications

Hydrogen Carriers: Scientific Limits and Challenges for the Supply Chain, and Key Factors for Techno-Economic Analysis

Hydrogen Carriers: Scientific Limits and Challenges for the Supply Chain, and Key Factors for Techno-Economic Analysis

PVP-Adjusted Crystal Surfaces of PtPd Nanoparticles for Enhancing the Catalytic Hydrolysis of Ammonia Borane

Ultrafine palladium nanoparticles deposited on Ni, N co-doped carbon to boost dehydrogenation efficiency of perhydro-N-phenylcarbazole

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