A facile synthesis of nearly monodisperse ruthenium nanoparticles and their catalysis in the hydrolytic dehydrogenation of ammonia borane for chemical hydrogen storage

Ruthenium nanoparticles supported over carbon thin film catalyst synthesized by pulsed laser deposition for hydrogen production from ammonia borane

“…Almost all the catalysts reported in the past for hydrolysis of AB are in the form of powder including those supported on certain substrates [7,11,15,[22][23][24][25][26][27][28][29][30]40]. The major problem with this form is that catalysts cannot be easily recovered.…”

“…However, recently, Ru-based catalysts are highly investigated for hydrolysis of AB namely: ruthenium (0) nanoparticles (NPs) supported on hydroxyapatite [22], bimetallic-based RuCo and RuCu alloy supported on -Al 2 O 3 [23], graphene supported Ru NPs [24], water soluble laurate-stabilized ruthenium (0) nanoclusters catalyst [7], Ru/γ-Al 2 O 3 nanopowder [25,26], Ru(acac) 3 [27], Ni@Ru [28], NiRu alloy [29], and PSSA-co-MA stabilized ruthenium (0) nanocluster catalyst [30] etc. Nevertheless, all the catalysts used are in powder form which has the problem related to separation and aggregation during the course of the reaction.…”

In Situ Formed Ruthenium(0) Nanoparticles Supported on TiO2 Catalyzed Hydrogen Generation from Aqueous Ammonia-Borane Solution at Room Temperature Under Air

“…of H 2 (per mole of AB) generation. Unfortunately, most of them used in these schemes suffer from difficult isolation, [26,27,28] low activity, [29,30,31] low stability, [27,28] and time consuming synthesis procedures. [26,28,32,33] Therefore, the development of a simply prepared, highly active and reusable catalyst that operates under mild conditions remains a difficult challenge in the catalytic hydrolysis of AB.…”

“…[18] Although, homogeneous catalysts have already showed notable activities in the hydrolysis of AB, the current effort has been focused on the employment of heterogeneous catalysts because of their considerable advantages in the catalytic reactions including simple product separation and catalyst recovery. [22] Among the heterogeneous catalysts Rh, [23,24] Pt [23,24] and Ru [25,26] metals provide significant catalytic activities in the hydrolysis of AB.…”

Effective hydrolysis of ammonia borane catalyzed by ruthenium nanoparticles immobilized on graphic carbon nitride

“…Apart from the catalytic nature of metal nanoparticles (NPs), catalyst supports also play critical roles in the performance of metal catalysts. To improve the stability of Ru catalysts, most AB hydrolysis studies in literature refer to the application of carbon black [14], Al 2 O 3 [30], hydroxyapatite [8], multi-walled carbon nanotube [11], TiO 2 [5] and SiO 2 [12] as supports.…”