Oxidative steam reforming of ethanol over carbon nanofiber supported Co catalysts

Advances in ethanol autothermal reforming

“…The effect of support on the reforming reaction has also been studied for various catalysts [70,71]. There also have been a few studies of nonnoble metals supported on nanofibers [45,46] Table 3 shows the detailed description of the catalyst, reaction conditions and the results for non-noble metal catalysts. A comparison of hydrogen selectivity is shown in Fig.…”

“…This is primarily because of the cost involved in noble metal catalysts which may adversely impact market acceptability. Few research works also focus on developing novel catalysts which involve nanostructures and composite phases [45,46]. For instance, perovskite phase also has been studied extensively for ethanol ATR [47][48][49][50][51].…”

Hydrogen generation over 30CoxVy/70SBA-15 mesoporous materials well-balanced by Co and V co-doping

“…Metallic cobalt is often assumed to be the active species despite the lack of evidence in the literature [21]. Recently it was shown that metallic cobalt and oxidized cobalt phases are often present in the most active catalysts [22], and some studies reported [23,24] that unreduced cobalt, Co 2þ species, might play an important role in ESR, at least in some catalytic systems, where a very limited amount of metallic cobalt was observed, which is believed to be the reason for the limited coking. In addition, in some papers, redox promoters, i.e., metal oxides with a range of oxidation states, were assumed to improve the catalytic stability because of their high oxygen storage capacities [25], and the roles played by both forms of cobalt in the stability and selectivity of catalysts is still not completely understood.…”

Ni-doped Carbon Nanofilaments (Ni-CNF): Preparation and Use as Reforming Catalyst

“…More specifically, the literature on carbon materials as support of reforming catalysts can be summarized as follows: SR of methanol over NiCu/CNT(carbon nanotubes) [11], catalytic reforming of dimethoxymethane over Cu/CNF (carbon nanofilaments) and Ni/CNF [12], DR of ethanol over FeCx/CNF [13], [14], DR of methane over metallurgical coke and activated carbons [15], oxidative SR of ethanol over Co/CNF [16], SR of propane over Ni/MWCNT (Nifunctionalized multiwall carbon nanotubes) [17], SR of bio-oil over Ni/CNF [18].…”

“…Da Silva et al [16] performed oxidative SR of ethanol with Co-CNF catalyst; they reported ethanol conversion as high as 85% at 500°C. Although catalysts with particles smaller than 4 nm show deactivation through metal oxidation, those with bigger particles (16 nm) remain stable over 24 h.…”