RhNi nanocatalyst: Spontaneous alloying and high activity for hydrogen generation from hydrous hydrazine

Zhong, Di‐Chang; Mao, Yue-Lei; Tan, Xin; Zhong, Ping; Liu, Liangxian

doi:10.1016/j.ijhydene.2016.02.109

Cited by 25 publications

(15 citation statements)

References 37 publications

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“…However, hydrazine is likely to explode if it is left in the air for a long time or under high temperature heating. Therefore, hydrazine is an extremely dangerous substance and is not suitable as a hydrogen storage material [14,15], but hydrous hydrazine (N 2 H 4 •H 2 O), as a liquid hydrogen storage material with excellent hydrogen storage content (8.0 wt%)-the only by-product when completely decomposed is N 2 , which has no pollution to the environment-has always been considered to have great prospects [16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

Pt-Ni Nanoalloys for H2 Generation from Hydrous Hydrazine

Luo¹,

Wan

et al. 2020

Catalysts

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Hydrous hydrazine (N2H4∙H2O) is a candidate for a hydrogen carrier for storage and transportation due to low material cost, high hydrogen content of 8.0%, and liquid stability at room temperature. Pt and Pt nanoalloy catalysts have been welcomed by researchers for the dehydrogenation of hydrous hydrazine recently. Therefore, in this review, we give a summary of Pt nanoalloy catalysts for the dehydrogenation of hydrous hydrazine and briefly introduce the decomposition mechanism of hydrous hydrazine to prove the design principle of the catalyst. The chemical characteristics of hydrous hydrazine and the mechanism of dehydrogenation reaction are briefly introduced. The catalytic activity of hydrous hydrazine on different supports and the factors affecting the selectivity of hydrogen catalyzed by Ni-Pt are analyzed. It is expected to provide a new way for the development of high-activity catalysts for the dehydrogenation of hydrous hydrazine to produce hydrogen.

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Section: Introductionmentioning

confidence: 99%

Pt-Ni Nanoalloys for H2 Generation from Hydrous Hydrazine

Luo¹,

Wan

et al. 2020

Catalysts

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“…Among various hydrogen storage materials investigated, hydrous hydrazine(H 2 NNH 2 ⋅H 2 O), which is believed to be one of the most attractive liquid hydrogen carriers owing to the characteristic of high hydrogen content of 8% and easy recharging in the form of liquid phase, can give a feasible approach for safe hydrogen storage . However, the decomposition of hydrazine follows the two routes, namely, a complete decomposition route to produce hydrogen in addition to nitrogen (

{normalH}_{2} NN {normalH}_{2} (normall) \to {normalN}_{2} (normalg) + 2 {normalH}_{2} (normalg)

) and the undesired way to generate nitrogen and ammonia ((

{3 H}_{2} NN {normalH}_{2} (normall) \to {normalN}_{2} (normalg) + 4 {NH}_{3} (normalg)

) . In order to avoid its undesired decomposition to ammonia, rationally constructing high‐performance and long‐term stability catalysts for the dehydrogenation of hydrous hydrazine is of primary significance.…”

Section: Introductionmentioning

confidence: 99%

Facile Fabrication of NiPt/CNTs as an Efficient Catalyst for Hydrogen Production from Hydrous Hydrazine

Zhang

Liu

Lu³

et al. 2019

ChemistrySelect

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Hydrogen generation through catalytically hydrous hydrazine has recently emerged as a promising strategy to meet the everincreasing demand for sustainable energy. However, it remains a challenging obstacle to design highly active catalysts as well as low-cost. In this work, we designed a series of NiPt/CNTs catalysts, which were prepared via a facile wet chemical reduction method, employed it in the dehydrogenation of hydrous hydrazine. The crystalline structure, chemical states and morphology of the catalysts were also characterized in detail. Among these catalysts, Ni 0.4 Pt 0.6 /CNTs exhibits highest activity with a turnover frequency (TOF) of 1725.3 h À 1 at 50°C and a low E a of 36.3 kJ/mol. Considering its cost-effective and high performance, the Ni 0.4 Pt 0.6 /CNTs represent a promising catalyst to hydrolyze hydrous hydrazine for hydrogen generation.[a] Dr.

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“…From the results, the rate of hydrogen generation over the Rh 0.8 Ni 0.2 /MXenec atalyst was found to depend greatly on the reaction temperature, which is in agreement with previousw ork. [49][50][51] The catalytic reactions at 25,35,40,50, and 60 8Cd emonstrated TOF values of 245, 443, 507, 857, and 1204 h À1 .T he Arrhenius plot of ln TOF versus 1/T for this catalysti sp lottedi nF igure S10 b, from which the E a value was calculated to be 38.2 kJ mol À1 .…”

Section: Highly Dispersed Bimetallic Nanoparticles Supported On Titanmentioning

confidence: 86%

Highly Dispersed Bimetallic Nanoparticles Supported on Titanium Carbides for Remarkable Hydrogen Release from Hydrous Hydrazine

et al. 2018

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The catalytic decomposition of hydrous hydrazine (N2H4⋅H2O) is considered a promising candidate for the fuel‐cell field, but sluggish reaction kinetics dramatically impede its practical application. In this study, bimetallic RhNi nanoparticles were successfully anchored on titanium carbides (MXene) by a one‐step wet‐chemical method to build superior catalysts for the decomposition of hydrous hydrazine (N2H4⋅H2O), a compound that can be used for chemical hydrogen storage. The synthesized RhNi/MXene catalysts were characterized by X‐ray photoelectron spectroscopy, transmission electron microscopy, high‐angle annular dark‐field scanning transmission electron microscopy, and inductively coupled plasma atomic emission spectroscopy. As a result of the particles size and a synergistic effect, the Rh0.8Ni0.2/MXene nanocatalyst demonstrated 100 % selectivity to H2, excellent stability, and high reaction kinetics with a turnover frequency of 857 h−1 for the decomposition of N2H4⋅H2O in alkaline solution.

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RhNi nanocatalyst: Spontaneous alloying and high activity for hydrogen generation from hydrous hydrazine

Cited by 25 publications

References 37 publications

Pt-Ni Nanoalloys for H2 Generation from Hydrous Hydrazine

Pt-Ni Nanoalloys for H2 Generation from Hydrous Hydrazine

Facile Fabrication of NiPt/CNTs as an Efficient Catalyst for Hydrogen Production from Hydrous Hydrazine

Highly Dispersed Bimetallic Nanoparticles Supported on Titanium Carbides for Remarkable Hydrogen Release from Hydrous Hydrazine

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