Unsaturated Mo in Mo₄O₄N₃ for efficient catalytic transfer hydrogenation of nitrobenzene using stoichiometric hydrazine hydrate

Abstract

Transfer hydrogenation of nitroarenes to the corresponding anilines using hydrazine hydrate by non-noble metals catalysts has already been widely studied. However, the toxicity resulting from excess hydrazine hydrate, and high...

Nitrogen-doped nickel-molybdenum oxide as a highly efficient electrocatalyst for benzyl alcohol oxidation

“…2b): the two peaks found at 229.5 eV and 232.6 eV belong to Mo 4+ , indicating the existence of MoO 2 and the residual two peaks are assigned to Mo 3+ (228.6 and 231.7 eV), revealing the existence of the Mo–N bonds. 23,29,30 There are two major peaks that can be clearly observed in the O 1s spectrum (Fig. 2c), which can be ascribed to metal-O bonds (530.5 eV) and surface-adsorbed water molecules (532.7 eV).…”

Selenium and nitrogen co‐doped porous carbon immobilized Ag nanoparticles: A practical heterogeneous nanocatalyst for hydrogenation of nitroaromatics

“…Four millimoles was determined as the optimal amount (Table 2, Entry 3), and when the reductant amount was decreased to 3 mmol, the product yield was reduced to 80% (Table 2, Entry 6), and increasing the reaction time did not lead to a remarkable increase in the product yield. [ 54–56 ]…”

“…Four millimoles was determined as the optimal amount (Table 2, Entry 3), and when the reductant amount was decreased to 3 mmol, the product yield was reduced to 80% (Table 2, Entry 6), and increasing the reaction time did not lead to a remarkable increase in the product yield. [54][55][56] Then, the probe reaction was accomplished at various temperatures; 75 C was the preferable temperature for this reaction. The product yield reached 60% when the reaction temperature was lowered to 50 C (Table 2, Entry 8), and with increasing the reaction temperature to 95 C, no positive effect on the rate of reaction and the conversion percentage of the product was observed (Table 2, Entry 9).…”

Modulating the Electronic Structure of α-Fe2O3 by Doping Atomically Dispersed Ce for the Transfer Hydrogenation of Nitroaromatics Using Stoichiometric Hydrazine Hydrate

“…The peaks above 150 °C were assigned to chemically adsorbed ammonia at mid to strongly acidic Lewis and Brønsted acidic sites. 18,53 Compared with the The NH 3 -TPD study gives simple information on the acidic centers on the surface, which were further studied by the FT-IR spectra of the samples pre-adsorbed with pyridine, as displayed in Figure 5. The peak at 1487 cm −1 was attributed to the Lewis and Brønsted sites, 54 and there was no obvious difference among these spectra.…”