Synergistic effects in atomic-layer-deposited PtCox/CNTs catalysts enhancing hydrolytic dehydrogenation of ammonia borane

Facile Fabrication of NiPt/CNTs as an Efficient Catalyst for Hydrogen Production from Hydrous Hydrazine

“…During the past several years, carbon nanotubes (CNTs), featuring their characteristic of large specific surface area, excellent chemical and physical properties and remarkable structure‐dependent relationships, have attracted immense interest as a promising support in electrochemical catalysts NH 3 synthesis, and dehydrogenation catalysts, etc . Herein, we, for the first time, fabricated Pt x Ni 1‐x /CNTs with different molar ratio of PtNi through a simple co‐reduction method and utilized as the catalysts toward hydrogen generation from hydrous hydrazine.…”

Zeolite‐Encaged Single‐Atom Rhodium Catalysts: Highly‐Efficient Hydrogen Generation and Shape‐Selective Tandem Hydrogenation of Nitroarenes

“…The AB hydrolysis rates were further improved in line with the increased acid concentration of zeolites (Figure S19). The TOF value of Rh@ZSM‐5‐H (Si/Al=105) increased to 699 min −1 at 298 K, representing the top level among all of the state‐of‐the‐art heterogeneous catalysts for the hydrolysis of AB . All products were determined by gas chromatography analysis and 1 H NMR and 11 B NMR measurements (Figures S20–S22).…”

“…[5] Ammonia-borane (NH 3 BH 3 ,A B) is considered as one of the most outstanding candidates for the chemical H 2 storage and production because of its high hydrogen content, non-toxicity,a nd superior stability in aqueous solutions. [5a, 6] So far, many supported metallic catalysts over various substrates,s uch as carbon materials, [7] metal oxides, [8] mesoporous silica [9] and porous metal-organic frameworks/cages, [6a,b, 10] have been employed for the H 2 generation from AB hydrolysis reac-tions;b ut these catalysts are usually subjected to poor longterm and cycling stability.Onthe other hand, the production of aromatic amines via the hydrogenation of nitroarenes is apopular and important industrial process,because the target amine products are widely used as raw materials or/and intermediates for manufacturing diverse value-added fine chemicals. [2d,11] Recently,atandem route that couples the hydrolysis of AB with hydrogenation of nitro compounds is regarded as an efficient strategy to significantly boost the productivity of the reduction process.…”

Polyoxometalates-engineered hydrogen generation rate and durability of Pt/CNT catalysts from ammonia borane

“…This process proceeds by: NH 3 BH 3 + 4H 2 O → NH 4 + + B(OH) 4 − + 3H 2 ↑ , evidenced by our recent kinetic and isotopic studies [8,9] , which has been identified as a highly structure-sensitive reaction [10][11][12][13] . The widely studied Pt-based catalysts have exhibited higher hydrogen generation activities among the transition metal catalysts [14][15][16][17][18][19][20] , and the underlying nature of the size effects over the Pt-based catalysts has been clarified by combining the multi-faceted kinetics analysis and model calculations [13] . The optimum Pt particle size of ∼1.8 nm over the Pt/CNT catalysts with the truncated octahedron-shaped Pt particles is suggested to mainly arise from the maximum exposed active sites, i.e., the Pt(111) atoms, with the appropriate Pt binding energy.…”