Study of the dry reforming of methane and ethanol using Rh catalysts supported on doped alumina

Kinetic Study of Dry Reforming of Methane Over Ni–Ce/Al2O3 Catalyst with Deactivation

“…Coke formation on the catalyst is one of the main disadvantages of this process and thus many researchers have aimed to obtain catalysts that would reduce the activity loss by coke. Reaction (3) is thermodynamically favored at high temperatures, while carbon generation is fostered at low temperatures in (4) and (5) [2].…”

“…An intense work focused on the development of catalysts capable of maintaining a good level of activity during a sufficiently long operating time, by decreasing coke formation rate [3]. Although catalysts based on noble metals such as Pd, Pt, Rh and Ru have been proposed [4,5], their high price makes their industrial use unprofitable. Nickel catalysts present a good activity for this process [6,7] as well as being economical.…”

Ni/SiO2 catalyst prepared via Ni-aliphatic amine complexation for dry reforming of methane: Effect of carbon chain number and amine concentration

“…On the other hand, syngas (mixture of H 2 and CO) produced in dry reforming reaction can be applied in other industry process, such as Fischer-Tropsch and methanol synthesis [1][2][3][4][5][6][7] . Among all kinds of dry reforming reactions, CO 2 (dry) reforming of methane (DRM) reaction is extensively studied recently [8][9][10][11][12][13][14][15][16][17][18].…”

Magnesium oxide as a heterogeneous catalyst support

“…Therefore, there is some interest to support Rh catalyst with metal oxide. It is indicated that Rh/MgO exhibits the greatest performance in terms of activity as well as stability as compared to Pt-, Pd-, and Rusupported MgO catalyst , Drif et al 2015. Particularly, kinetic analysis demonstrates a noteworthy alteration in terms of metal-specific activity, with Rh resulting in being 2.2, 3.7, and 5.8 times more active than Pd, Co, and Ni, respectively.…”

“…Moreover, transition metal group VII of the first periodic row (Fe, Co, and Ni) is also extensively used in the catalytic decomposition of methane at moderate conditions ( Figure 40) ). It has been recorded that Ni-based catalysts are more active and stable than Co-based ones are under the same reaction conditions (Drif et al 2015). It has been highlighted that the key problem is avoiding the formation of carbon, which deactivates the catalyst; the origin of inactive carbon during reforming of methane may occur via CH 4 decomposition, which is endothermic, but the main contributor to carbon deposition is CO disproportionation (Liu et al 2010, Zanganeh et al 2013.…”