Ru nanoparticles supported on MIL-53(Cr, Al) as efficient catalysts for hydrogen generation from hydrolysis of ammonia borane

Yang, Kunzhou; Zhou, Liqun; Gong, Yu; Xiong, Xinbo; Ye, Menglin; Li, Yue; Lu, Da-Yong; Pan, Yaxi; Chen, Menghuan; Zhang, Le; Gao, Dingshan; Wang, Zheng; Liu, Hongying; Xia, Qinghua

doi:10.1016/j.ijhydene.2016.02.104

Cited by 61 publications

(21 citation statements)

References 37 publications

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“…The 27 Therefore, the TOF value of the Ru/MIL-53(Al)-NH 2 catalyst is much larger than that of the Ru/MIL-53(Al) in this study. Moreover, this value is higher than those of most Ru-based catalysts, which are illustrated in Table 1.…”

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confidence: 51%

Amine-functionalized MIL-53(Al) with embedded ruthenium nanoparticles as a highly efficient catalyst for the hydrolytic dehydrogenation of ammonia borane

2018

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Well-dispersed ruthenium nanoparticles (Ru NPs) are immobilized within the pores of amine-functionalized MIL-53 via an in situ impregnation-reduction method. The resulting Ru/MIL-53(Al)-NH 2 catalyst exhibits superior catalytic performance for the dehydrogenation of ammonia borane (AB) at ambient temperature relative to the Ru/MIL-53(Al) catalyst; it has a turnover frequency (TOF) of 287 mol H 2 min À1 (mol Ru) À1and an activation energy (E a ) of 30.5 kJ mol À1 . The amine groups present in the MIL-53(Al)-NH 2 framework facilitate the formation and stabilization of ultra-small Ru NPs by preventing their aggregation. Additionally, the Ru/MIL-53(Al)-NH 2 catalyst exhibits satisfactory durability and reusability:72.4% and 86.3% of the initial catalytic activity was maintained after the fifth successive cycle of the hydrolytic dehydrogenation of AB in the two respective tests.

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confidence: 51%

Amine-functionalized MIL-53(Al) with embedded ruthenium nanoparticles as a highly efficient catalyst for the hydrolytic dehydrogenation of ammonia borane

2018

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“…X-ray photoelectron spectroscopy and transmission electron microscopy (TEM) images were used to further study the composition of Ru@ZIF-67. Taking 1b as an example, XPS spectrum of 1b (Figure 1(b) and ) showed the peaks at 462.0 eV and 485.1 eV corresponding to Ru(0) 3p 3/2 and 3p 1/2 , respectively, while the two peaks with binding energy around 280.6 eV and 284.2 eV were attributed to 3d 5/2 and 3d 3/2 of Ru(0), respectively () [43–46]. No peaks for Ru with other valences were observed by XPS, confirming that Ru 3+ cations were completely converted into Ru(0).…”

Section: Resultsmentioning

confidence: 99%

Toward Green Production of Chewing Gum and Diet: Complete Hydrogenation of Xylose to Xylitol over Ruthenium Composite Catalysts under Mild Conditions

Liu

Zhu

et al. 2019

Research

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Xylitol is one of the most famous chemicals known to people as the essential ingredient of chewing gum and as the sugar alternative for diabetics. Catalytic hydrogenation of biomass-derived xylose with H2 to produce high-value xylitol has been carried out under harsh reaction conditions. Herein, we exhibit the combination of Ru NPs with an environmentally benign MOF (ZIF-67) to afford a heterogeneous composite catalyst. Complete conversion of xylose with 100% selectivity to xylitol was achieved at 50°C and 1 atm H2. This is the first successful attempt to produce xylitol with ambient pressure H2 as well as the first time to achieve a 100% selectivity of xylitol for applicable catalysts. We also proved the universality of the Ru@ZIF-67 towards other hydrogenation processes. Under 1 atm H2, we achieved 100% conversion and >99% selectivity of 1-phenylethanol at 50°C for the hydrogenation of acetophenone. This is also the first report of hydrogenating acetophenone to 1-phenylethanol under 1 atm H2, which confirms that our result not only contributes to enhance the industrial yields of xylitol and reduces both the economical and energy costs but also provides new perspectives on the other hydrogenation process with H2.

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“…reported Pt/C with TOF 83.3 mol (H 2 ) mol −1 (cat.) min −1 –. However cost and recyclability always remain main concern .…”

Section: Introductionmentioning

confidence: 99%

Graphene Supported RuNi Alloy Nanoparticles as Highly Efficient and Durable Catalyst for Hydrolytic Dehydrogenation‐Hydrogenation Reactions

Dhanda

Kidwai

2017

ChemistrySelect

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Here, reduced graphene oxide (RGO) supported surfactant free, RuNi alloy nanoparticles with particle size < 5 nm were synthesized by chemical coreduction route. The synthesized sample was well characterized by various techniques and showed complete solid solution without any extra phase, where Ru lattice is required for nucleation of metallic Ni. The Ru x Ni 100-x /RGO (x = 100, 75, 50 and 25) nanocomposites (NCs) exhibits remarkable activity in hydrolytic dehydrogenation of NH 3 BH 3 (ammonia borane, AB). Among various Ru x Ni 100-x compositions, Ru 50 Ni 50 NPs showed best performance with maximum H 2 evolution rate 9305.6 mL min À1 g À1 and TOF value 236 min À1 at 30 o C, which is one of the best value reported till date. In addition, present activity retained upto 7 th catalytic cycles, showing high durability which makes it a potential candidate for development of NH 3 BH 3 as a H 2 storage material. Moreover, alloy NCs further explored in tandem reduction of nitro and nitrile compounds in presence of AB as H 2 source which again showed best performance with excellent yield (> 99 %) of amine product with short time period of 4.5-10 min. Additionally, NCs exhibits high chemoselectivity and durability towards such organic transformation reactions. This high catalytic efficiency of RGO supported RuNi NPs could be ascribed to synergistic interaction between Ru/Ni metals, high surface area (small sized NPs and graphene sheets), RGO as a support material which prevent agglomeration of particle.

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Ru nanoparticles supported on MIL-53(Cr, Al) as efficient catalysts for hydrogen generation from hydrolysis of ammonia borane

Cited by 61 publications

References 37 publications

Amine-functionalized MIL-53(Al) with embedded ruthenium nanoparticles as a highly efficient catalyst for the hydrolytic dehydrogenation of ammonia borane

Amine-functionalized MIL-53(Al) with embedded ruthenium nanoparticles as a highly efficient catalyst for the hydrolytic dehydrogenation of ammonia borane

Toward Green Production of Chewing Gum and Diet: Complete Hydrogenation of Xylose to Xylitol over Ruthenium Composite Catalysts under Mild Conditions

Graphene Supported RuNi Alloy Nanoparticles as Highly Efficient and Durable Catalyst for Hydrolytic Dehydrogenation‐Hydrogenation Reactions

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