Supported-Ni catalysts

Fig. 4. Stability of Ni-supported catalysts at 1073K CH4/H20/N2=1/1/2, GHSV=2.4xl0 ml h g-caf ...

The catalytic partial oxidation of methane to syngas was first reported by Pettree as early as 1946 [1]. More recently, several investigators have studied the reaction mostly on Ni supported catalysts [2-4] and on Ru oxides [5]. In the past several years, Schmidt and coworkers [6-8] have studied the reaction using various noble metals in a monolith reactor. In this configuration, high methane conversions and syngas selectivities were achieved in a reactor operated under autothermal conditions... 

Vedenyapin, A.A., Chankvetadze, B.G., Tsivinskaya, L.K, Akimov, V.M., and Klabunovskii, E.L (1987) Studies of Cu-Ni supported catalysts for enantioselective hydrogenation. React Kinet Catal. Letters 33, 53-58, Chem. Abstr. 1988,108,74488k. 

Frusteri F, Freni S, Chiodo V, Donato S, Bonura G, Cavallaro S (2006) Steam and auto-thermal reforming of bio-ethanol over MgO and Ce02 Ni supported catalysts. Int J Hydrogen Energy 31 2193-2199... 

These reactions may occur simultaneously or not, depending on the thermodynamic conditions and especially on the catalyst. In the methanation Ni, catalysts are used, while in Fischer-Tropsch reactions, Fe or Co catalysts are employed. In the reactions for methanol synthesis, mixed oxide catalysts of CuO/ZnO are used, and for the shift reaction, Ni supported catalyst. 

Nickel is the most widely used electro-catalyst in SOEC anodes and therefore, steam reforming of CH4 on Ni supported catalysts have been widely studied [59,58]. The major reactions that CH4 can undergo during reforming or partial oxidation can be summarized as [58]... 

Frusteri, F., Freni, S., Chiodo, V., Donato, S., Bonura, G., Cavallaro, S. (2006). Steam and auto-thermal refomting of hio-ethanol over MgO and Ce02 Ni supported catalysts. International Journal of Hydrogen Energy, 31, 2193—2199. 

Chiodo, V., Freni, S., Galvagno, A., MondeUo, N., Frusteri, F. (2010). Catalytic features of Rh and Ni supported catalysts in the steam refomiing of glycerol to produce hydrogen. Applied Catalysis A General, 381, 1—7. 

This process has been recently carried out over a Ni-supported catalyst in a microchannel reactor resulting in an excellent catalytic performance in milliseconds (50 ms) contact time. Liu et al. developed a new method to manufacture the metal (FeCralloy)-ceramic (Y-AI2O3) complex substrate needed as catalyst support, called improved thermal spray. Due to the dual function of this substrate, a CO conversion value of above 98% and 92% CH4 selectivity and reliability were found operating at 550 °C, 30 atm, and 71000 h [41]. 

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