RuCo NPs supported on MIL-96(Al) as highly active catalysts for the hydrolysis of ammonia borane

Lu, Da-Yong; Gong, Yu; Li, Yue; Chen, Menghuan; Pan, Yaxi; Zhou, Liqun; Yang, Kunzhou; Xiong, Xinbo; Wu, Peng; Xia, Qinghua

doi:10.1016/j.jallcom.2016.10.055

Cited by 58 publications

(26 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In previous studies, researchers focused on immobilizing bimetallic or trimetallic alloy NPs in matrixes to improve the catalysis of AB hydrolysis through the synergistic effects of metal NPs, such as CuNi/MIL-101, 17 RuCo/MIL-96, 18 RuCuCo/MIL-101, 19 and Ag 30 Pb 70 /C. 20 However, no studies have described the impact of amine-functionalized MOFs on AB hydrolysis.…”

Section: Introductionmentioning

confidence: 99%

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

2018

Self Cite

View full text Add to dashboard Cite

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.

show abstract

Section: Introductionmentioning

confidence: 99%

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

2018

Self Cite

View full text Add to dashboard Cite

show abstract

“…The lower activity of monometallic Co catalysts compared to Ru ones for the AB hydrolysis was in accordance with results previously reported in the literature. 44,55,64 Therefore, in the case of the AB hydrolysis, the better dispersion of the cobalt oxide species active sites achieved in the Ru-Co/C bimetallic samples with respect to the monometallic Co/C does not provide any significant improvement in the catalytic activity, pointing out that Ru sites are much more important than Co ones in addressing the AB hydrolysis activity of bimetallic Ru-Co/C catalysts. This is in accordance with the fact that catalytic activity of 1RuCo/ C towards AB hydrolysis was slightly lower compared to 0.5RuCo/C (Figure 2), notwithstanding the cobalt oxide species dispersion of 1RuCo/C was approximately two times higher of 0.5RuCo/C ( Table 5).…”

Section: Discussionmentioning

confidence: 99%

Carbon supported bimetallic Ru-Co catalysts for H₂ production through NaBH₄ and NH₃ BH₃ hydrolysis

2017

View full text Add to dashboard Cite

Summary This work investigates the effect of the addition of small amounts of Ru (0.5‐1 wt%) to carbon supported Co (10 wt%) catalysts towards both NaBH4 and NH3BH3 hydrolysis for H2 production. In the sodium borohydride hydrolysis, the activity of Ru‐Co/carbon catalysts was sensibly higher than the sum of the activities of corresponding monometallic samples, whereas for the ammonia borane hydrolysis, the positive effect of Ru‐Co systems with regard to catalytic activity was less evident. The performances of Ru‐Co bimetallic catalysts correlated with the occurrence of an interaction between Ru and Co species resulting in the formation of smaller ruthenium and cobalt oxide particles with a more homogeneous dispersion on the carbon support. It was proposed that Ru°, formed during the reduction step of the Ru‐Co catalysts, favors the H2 activation, thus enhancing the reduction degree of the cobalt precursor and the number of Co nucleation centers. A subsequent reduction of cobalt and ruthenium species also occurs in the hydride reaction medium, and therefore the state of the catalyst before the catalytic experiment determines the state of the active phase formed in situ. The different relative reactivity of the Ru and Co active species towards the two investigated reactions accounted for the different behavior towards NaBH4 and NH3BH3 hydrolysis.

show abstract

“…20,21 Unfortunately, these monometallic catalysts with very small size in nano-size scale oen face severe agglomeration, resulting in poor stability and activity. 22 Hence the supports are always employed to disperse and stabilize these metal particles, especially for metal particles with size in nanometers. Therefore, through the interaction of metal particles and supports, the performance of supported metal catalysts will be signicantly improved.…”

Section: Relativelymentioning

confidence: 99%

Hydrolytic dehydrogenation of NH₃BH₃ catalyzed by ruthenium nanoparticles supported on magnesium–aluminum layered double-hydroxides

et al. 2020

View full text Add to dashboard Cite

show abstract

RuCo NPs supported on MIL-96(Al) as highly active catalysts for the hydrolysis of ammonia borane

Cited by 58 publications

References 50 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

Carbon supported bimetallic Ru-Co catalysts for H₂ production through NaBH₄ and NH₃ BH₃ hydrolysis

Hydrolytic dehydrogenation of NH₃BH₃ catalyzed by ruthenium nanoparticles supported on magnesium–aluminum layered double-hydroxides

Contact Info

Product

Resources

About

RuCo NPs supported on MIL-96(Al) as highly active catalysts for the hydrolysis of ammonia borane

Cited by 58 publications

References 50 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

Carbon supported bimetallic Ru-Co catalysts for H2 production through NaBH4 and NH3 BH3 hydrolysis

Hydrolytic dehydrogenation of NH3BH3 catalyzed by ruthenium nanoparticles supported on magnesium–aluminum layered double-hydroxides

Contact Info

Product

Resources

About

Carbon supported bimetallic Ru-Co catalysts for H₂ production through NaBH₄ and NH₃ BH₃ hydrolysis

Hydrolytic dehydrogenation of NH₃BH₃ catalyzed by ruthenium nanoparticles supported on magnesium–aluminum layered double-hydroxides