Insights into the effect of surface functional groups on catalytic performance for hydrogen generation from sodium borohydride

Feng, Xiang; Song, Zhaoning; Guo, Tongtian; Yang, Rui; Liu, Yibin; Chen, Xiaobo

doi:10.1039/c6ra25016e

Cited by 6 publications

(6 citation statements)

References 55 publications

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“…The catalytic performance of this modified ZIF‐8 material was superior to the other supports including GO, AC, and mesoporous SiO 2 (SBA‐15) (Table 2). Further kinetic isotope effect studies revealed a high value of 4.95, suggesting that the cleavage of the water's OH bond was the rate‐determining step in this process [41b,51] . Given the hydridic nature of the BH bond in AB, a hydrogen bond between H 2 O and AB molecule at the catalyst surface can be formed and this would facilitate the release of hydrogen from AB through the oxidative addition of OH on Pt–Ni alloy structure (Figure 7b).…”

Section: Catalyzed Hydrolysis Of Hydrides: Means To Generate Hydrogenmentioning

confidence: 99%

“…This makes Pt electron rich and eases the electron transfer process (Figure 4) to the defective support in line with the recent studies. [ 41 ] Hence, the defective surface triggers an electron transfer process from the metal site to the support and promotes AB hydrolysis to generate H 2 . On the other hand, electron‐rich oxygen groups, where the electron‐deficient metal is anchored, are believed to reverse this process (Figure 4).…”

Section: Catalyzed Hydrolysis Of Hydrides: Means To Generate Hydrogenmentioning

confidence: 99%

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Catalysis in Solid Hydrogen Storage: Recent Advances, Challenges, and Perspectives

et al. 2022

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Catalysis is at the core of previous energy transition. It has enabled the use of oil and natural gas as our primary energy sources in unprecedented ways and led to feedstocks enabling exceptionally high living standards in human history. In a decarbonized economy with hydrogen as the new energy vector, catalysis is already playing a key role in producing hydrogen. However, catalysts for the effective storage of hydrogen must be advanced. Many solid hydrogen storage materials such as magnesium‐based hydrides, alanates, and/or borohydrides display promising hydrogen densities far superior to the current state of compressed or liquid hydrogen. These solid materials have thermodynamic and kinetic barriers which severely hinder their practical hydrogen uptake and release. To date, most of these barriers for solid hydrides (especially boron or nitrogen compounds) are modified via catalysis; however, the catalytic species per se and their roles are obscure. Herein, a comprehensive overview of various catalysts for solid hydrogen storage materials, their catalytic roles, and the underpinning mechanisms is provided. The current state of knowledge is critically reviewed and gaps where further research intensification is needed to support rapid hydrogen generation and storage in solid materials for the emerging hydrogen economy are identified.

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Section: Catalyzed Hydrolysis Of Hydrides: Means To Generate Hydrogenmentioning

confidence: 99%

Section: Catalyzed Hydrolysis Of Hydrides: Means To Generate Hydrogenmentioning

confidence: 99%

Catalysis in Solid Hydrogen Storage: Recent Advances, Challenges, and Perspectives

et al. 2022

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“…Modification of catalyst support surface is one possible solution to increase catalysts' activity and stability. The presence of functional groups on the support surface has great influence on the electronic state of active metal and metal dispersion [21]. The aminopropyl groups provide a unique possibility for further surface modification.…”

Section: Introductionmentioning

confidence: 99%

Amino-Modified Silica as Effective Support of the Palladium Catalyst for 4-Nitroaniline Hydrogenation

et al. 2020

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The article describes the synthesis of aminoorgano-functionalized silica as a prospective material for catalysis application. The amino groups have electron donor properties which are valuable for the metal chemical state of palladium. Therefore, the presence of electron donor groups is important for increasing catalysts’ stability. The research is devoted to the investigation of silica amino-modified support influence on the activity and stability of palladium species in 4-nitroaniline hydrogenation process. A series of catalysts with different supports such as SiO2, SiO2-C3H6-NH2 (amino-functionalized silica), γ-Al2O3 and activated carbon were studied. The catalytic activity was studied in the hydrogenation of 4-nitroaniline to 1,4-phenylenediamine. The catalysts were characterized by scanning electron microscopy, transmission electron microscopy, X-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and chemisorption of hydrogen by the pulse technique. The 5 wt.% Pd/SiO2-C3H6-NH2 catalyst exhibited the highest catalytic activity for 4-nitroaniline hydrogenation with 100% conversion and 99% selectivity with respect to 1,4-phenylenediamine.

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“…Modification of catalyst support surface is possible solution to increase catalysts activity and stability. Presence of functional groups on support surface has great influence on electronic state of active metal and metal dispersion [21]. The aminopropyl groups presence a unique possibility for further surface modification.…”

Section: Introductionmentioning

confidence: 99%

Amino-modified Silica as Effective Support of the Palladium Catalyst of Hydrogenation

Latypova¹,

Lebedev²,

Rumyantsev³

et al. 2020

Preprint

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The article describes synthesis of aminoorgano-functionalized silica as a perspective material for catalysis application. The amino groups have electron donor properties valuable for metal chemical state of palladium. So presence of electron donor groups is important for increasing of catalysts stability. The research is devoted to investigation of silica amino-modified support influence on activity and stability of palladium species in 4-nitroaniline hydrogenation process. A series of catalysts with different supports such as SiO2, SiO2-C3H6-NH2 (amino-functionalized silica), γ-Al2O3 and activated carbon were studied. The catalytic activity was studied in the hydrogenation of 4-nitroaniline to 1,4-phenylenediamine. The catalysts were characterized by scanning electron microscopy, transmission electron microscopy, x-ray photoelectron spectroscopy, Fourier transform infrared spectroscopy and pulse chemisorption of hydrogen. The 5 wt. % Pd/SiO2-C3H6-NH2 catalyst exhibited the highest catalytic activity for 4-nitroaniline hydrogenation with 100% conversion and 99% selectivity with respect to 1,4-phenylenediamine.

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Insights into the effect of surface functional groups on catalytic performance for hydrogen generation from sodium borohydride

Cited by 6 publications

References 55 publications

Catalysis in Solid Hydrogen Storage: Recent Advances, Challenges, and Perspectives

Catalysis in Solid Hydrogen Storage: Recent Advances, Challenges, and Perspectives

Amino-Modified Silica as Effective Support of the Palladium Catalyst for 4-Nitroaniline Hydrogenation

Amino-modified Silica as Effective Support of the Palladium Catalyst of Hydrogenation

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