Highly efficient NiAl 2 O 4 -free Ni/γ-Al 2 O 3 catalysts prepared by solution combustion method for CO methanation

Effect of ZrO2 on catalyst structure and catalytic methanation performance over Ni-based catalyst in slurry-bed reactor

“…3(a). The diffraction peaks at 2q angles of 37.3 , 43.3 , 62.9 , and 75.4 can be attributed to the characteristic peaks of NiO [34], and the diffraction peaks at 2q angles of 37.6 , 45.9 , and 67.0 can be attributed to the characteristic peaks of gAl 2 O 3 [34]. Moreover, Ni/Zr-IP catalyst exhibited the characteristic diffraction peaks of m-ZrO 2 and t-ZrO 2 [35].…”

Modern Ni and Pd–Ni Catalysts Supported on Sn–Al Binary Oxide for Oxy‐Steam Reforming of Methanol

“…The second reduction peak located above 600 8C and ending at about 820 8C is attributed to the reduction of Sn 4 + species causes their interaction with Al 3 + cations probably due to solid solution formation. The last reduction peak is assigned to the spinel structure NiAl 2 O 4, [25][26][27][28][29] bulk SnO 2 as well as the surface Sn 2 + to Sn 0 reduction (see Figure 3). In contrast, the reduction studies performed for nickel-supported catalysts with the higher nickel content showed, in addition to the effects related to the mentioned above reduction stages, three additional effects assigned to the NiO species reduction visible on their TPR profiles.…”

Review of Recent Studies on Solution Combustion Synthesis of Nanostructured Catalysts

“…Hence, titanium employment led to a higher utilization of Ni species and thus, more exposed active surfaces, which in turn improved the CO adsorption capacity. Moreover, electron transfer from TiO x raised the density of the nickel electron cloud which could facilitate the dissociation of CO on the catalyst surfaces …”