RuCuCo nanoparticles supported on MIL-101 as a novel highly efficient catalysts for the hydrolysis of ammonia borane

Discovery of a self-healing catalyst for the hydrolytic dehydrogenation of ammonia borane

“…11 So far, hydrolysis has been the most benign method to obtain all 3 equivalents of H2 from 1 equivalent of AB without the need of elevated temperatures or toxic solvents, although a catalyst is often required. 12 The hydrolytic dehydrogenation of AB can be catalyzed by a wide range of catalysts, from monometallic noble metal nanoparticles (NPs) such as Ru, 13 Rh, 14 Pt, 15 Ag, 16 and Pd NPs, 17 monometallic earth-abundant transition metal NPs such as Cu, 18 Ni, 19 Co, 20 and Fe NPs, 21 bimetallic/multimetallic NPs such as RuRh, 22 RuCo, 23 CuCoMo, 24 and RuCuCo NPs, 25 NPs of transition metal oxides such as Cu2O 26 and phosphides such as Ni2P 27,28 and CoP, 29,30 to transition metal complexes such as an iridium pincer complex. 31 While these catalysts are quite efficient, they suffer from the following disadvantages: i. the noble-metal-based catalysts are expensive, non-sustainable, and impracticable for large-scale applications, ii.…”

Cu(OH)2 supported on Fe(OH)3 as a synergistic and highly efficient system for the dehydrogenation of ammonia-borane

“…Cu has emerged as an interesting transition metal with its catalytic power toward AB hydrolysis or methanolysis [18][19][20][21]. In the past, the activity of Cu for dehydrogenation of AB can be significantly improved by compositing with other elemental atoms or supporting on substrate [22][23][24][25][26][27][28][29][30]. Although the multi-component systems have shown remarkable catalytic efficiencies, their tedious and costly fabrication process hinders their widespread application.…”

“…Since Fe(OH) 3 can be produced on a large scale and is insoluble in water or methanol, it might be wise to employ it as a support for Cu to form a composite material toward the dehydrogenation of AB. This composite will give several benefits: first, just like in the case of metal-organic frameworks [4,12,29] and carbon materials [5,9,28], Fe(OH) 3 can be utilized for restraining the agglomeration or sintering of the in-situ formed Cu(0); second, an interfacial interaction can be expected between Cu(0) and Fe species to facilitate the reaction; finally, the OH À in Fe(OH) 3 may accelerate the reaction through the activation of B-N bonds. Thus, a multipronged synergistic effect can be expected between Cu(0) and Fe(OH) 3 to facilitate the reaction.…”

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

“…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.…”