Strategies to enhance dry reforming of methane: Synthesis of ceria-zirconia/nickel–cobalt catalysts by freeze-drying and NO calcination

Syngas production from CO 2 reforming of methane over ceria supported cobalt catalyst: Effects of reactants partial pressure

“…Significantly, ceria has been used extensively as a promoter in catalyst formulations for reactions to syngas viz. steam reforming, partial oxidation and dry reforming of methane (Laosiripojana et al, 2005;Zhang et al, 2007;Aw et al 2014;Fonseca et al, 2014;Yu et al, 2014). Addition of ceria as promoters has been reported to significantly enhance the stability of the catalysts in terms of its resistance to carbon deposition (Laosiripojana et al, 2005).…”

Effect of support composition on the origin and reactivity of carbon formed during dry reforming of methane over 5wt% Ni/Ce1−xMxO2−δ (M=Zr4+, Pr3+) catalysts

“…Ceria-based and in particular ceria-zirconia solid solutions have been reported to exhibit significant improvements in "carbon" formation reduction and catalyst's stability compared to other non-reducible metal oxide supports (e.g. ␥-Al 2 O 3 , SiO 2 ) [2,[10][11][12][13][14][15][16][17][18][19][20][21].…”

“…The elementary reaction step (20) describes the well-known Boudouard reaction, which along with the chemical steps (15) and (21) become responsible for the formation of inactive "carbon", the extent of which mainly depends on the kinetics of its formation in various structural forms (Eqs. (15) and (21)).…”

“…The C-s is considered as the active carbon species found in the mechanism of DRM, and this should be distinguished from the inactive carbon given in Eqs. (15) and (21). It has been reported [53,54] that CO dissociation involves ensembles of Ni atoms as active sites, the number of which is in the range 4-6.…”

Synthesis of a novel 3 %Ru/CeZr0.5GdO4 nanocatalyst and its application in the dry and steam reforming of methane

“…Also, it was reported that in order to overcome the rather low thermal Fig. 3 CH 4 conversion, CO, H 2 yields and H 2 /CO ratio in the SRM reaction with feed WHSV = 2, 3 L/h using the 3 %Ru/CeZr 0.5 GdO 4 catalyst stability of ceria, zirconia (ZrO 2 ) was added to ceria to form a solid solution and thus improve its thermal stability (Aw et al 2014). The advantages of zirconia are based on its good affinity to CO 2 adsorption for DRM and its excellent thermal stability (Mustu et al 2013).…”