Synthesis of a NiFe2O4 catalyst for the preferential oxidation of carbon monoxide (PROX)

Nanosized spinel oxide catalysts for CO-oxidation prepared via CoMnMgAl quaternary hydrotalcite route

“…The intensity of such band was decreased upon increasing the calcination temperatures. The 2 band at around 864 cm −1 in the samples HT-A and HT-A-I confirm the presence of CO 3 2− and to M-OH modes. The intense band observed at 772 cm −1 for all the investigated samples could be attributed to the M-OH mode, which remained after calcination of the prepared hydrotalcites at 500 and 600 • C. A characteristic spinel IR absorption band is observed at 674 cm −1 [40].…”

“…Supported noble metals are generally considered as efficient catalysts for CO oxidation [2,3]. The efficiency of the supported noble metal catalysts for the CO oxidation at low temperature becomes the advantageous key for the use of such catalysts compared with mixed oxide catalysts [4][5][6].…”

Magnetic nickel ferrite nanoparticles as an efficient catalyst for the preparation of polyhydroquinoline derivatives under microwave irradiation in solvent-free conditions

“…Nickel ferrite MNPs are inexpensive, air-stable, magnetically separable, and economical catalysts [41][42][43][44]. There are very limited and there are less references about catalytic properties of nickel ferrite MNPs [45][46][47]. These spinel-type bimetal oxides, have shown great potential in the field of use for catalysis, although they have so far been less investigated.…”

Catalysts prepared from copper–nickel ferrites for the steam reforming of methanol

“…The high catalytic performance and good thermal stability of the composite structure comprised the nano-scale Cu particles that were homogeneously dispersed in the porous Cr 2 O 3 and Fe 3 O 4 matrices, which were generated by reductive decomposition of CuCrO 2 and CuFe 2 O 4 [20e22]. Although NiFe 2 O 4 was reported to have a high performance for the preferential oxidation of carbon monoxide (PROX) [13], CO oxidation [14], water gas shift reaction (WGSR) [15e17] and methane combustion [18,19], it has not been evaluated for use in SRM reactions. It was reported in literature that the physical properties of ferrites could be improved by changing the cations [6e12]; however, the approach for improving the catalyst performance using spinel compounds with different metal ions has not been explored.…”