Mesoporous Nickel–Aluminum Mixed Oxide: A Promising Catalyst in Hydride‐Transfer Reactions

Abstract

The design and synthesis of a new nanostructured material that can efficiently catalyze selective reduction reactions in an eco‐friendly way is an active area of research today. Here a mesoporous Ni–Al mixed oxide material has been synthesized hydrothermally by using lauric acid as capping agent. The mesoporosity observed in the material is mainly originated from the interparticle voids created due to the self‐assembly of the nanoparticles (NPs) in the presence of capping agent used during the synthesis. The material has been characterized by powder XRD, N2 sorption, high‐resolution transmission electron microscopy (HRTEM), scanning electron microscopy/energy‐dispersive spectroscopy (SEM‐EDS), FTIR, and thermogravimetric/differential thermal analysis (TG‐DTA) tools. The mesoporous Ni–Al mixed‐oxide material showed a very high Brunauer–Emmett–Teller (BET) surface area (337 m2 g–1) and excellent catalytic activity in a selective liquid‐phase hydride‐transfer reduction reaction of nitroarenes to their corresponding anilines in the presence of 2‐propanol as hydride source.

Mesoporous materials: versatile supports in heterogeneous catalysis for liquid phase catalytic transformations

“…81 The synthetic pathway for the mesoporous self-assembled Ni-Al mixed oxide nanoparticles and its application for hydrogenation of nitrobenzene to aniline is shown in Figure 7. Hydrogenation of D-glucose over Ru nanoparticles impregnated mesoporous hypercrosslinked polystyrene is reported by Sapunov et al 82 They also provided an elaborate mechanistic pathway and kinetics for the formation of D-sorbitol.…”

C(sp3)–H Bond Activation by Perovskite Solar Photocatalyst Cell

“…A notable Urbach tail absorption could be observed in NiO x / FAPbBr 3 /TiO 2 , which is the same as that in pure NiO x , indicating dense defects. 38 We next examine the photophysical processes in these materials by steady-state photoluminescence (PL) spectroscopy. FAPbBr 3 presents a typical PL emission around 560 nm ( Figure S8).…”

The Development of Mesoporous Ni‐Based Catalysts and Evaluation of Their Catalytic and Photocatalytic Applications

“…The mesoporous Ni–Al based material showed a high specific surface area (337 m 2 g –1 ). This material showed efficient catalytic activity in the reduction of nitroarenes …”

“…The synthesis of mesoporous Ni–Al mixed oxide material has been reported in one‐step hydrothermally using long‐chain fatty acid molecules (lauric acid as a capping agent) . The detailed synthesis of mesoporous Nickel–Aluminum Mixed Oxide reported in the literature . Nickel chloride and aluminum chloride, water, and lauric acid mixed to form a solution at 40 °C to achieve a clear solution.…”