Monoliths washcoated with AuCu catalysts for CO removal in an ethanol fuel processor: Effect of CeO2–SiO2 dual support on the catalytic performance and reactor cost

Stability studies of PtSn structured catalysts supported on thin layers of MAl2O4 (M: Mg, or Zn) for paraffins dehydrogenation reactions

“…These materials were applied in rapid reactions at high temperatures to avoid both the formation of residual compounds derived from the reaction of the products and the formation of hot spots on the catalyst that change the structure of the metallic phase. The inert substrates have various shapes such as tubes, [1][2][3] plates, [4][5][6] honeycombs, [7][8][9] and foams, [5,[10][11][12] among others. In addition, the coating methods used to deposit thin films on substrates, such as washcoating, [8,13,14] sol-gel deposition, [2,15,16] electrophoretic deposition, [17,18] chemical vapour deposition (CVD), [5,19,20] powder plasma spraying, [21][22][23] and physical vapour deposition (PVD), [24][25][26] among others, are diverse.…”

Biomass Potential for Producing Power via Green Hydrogen

“…Afterwards, ethanol is purified through batch distillation, the resulting bioethanol is converted into syngas over monoliths washcoated with RhPt/CeO 2 -SiO 2 at temperatures between 600 • C and 700 • C. At these conditions, complete conversion of ethanol is attained [18]. The resulting syngas is then cooled down and sent to the CO-removal reactor which operates between 200 and 300 • C and packed with a monolith washcoated with Au-Cu/CeO 2 to remove CO [31]. Lastly, the CO-free syngas is fed to a commercial HT-PEMFC to produce power.…”

“…The latter could reduce CO concentration to less than 100 ppm, if proper conditions and catalysts are employed. Recently, Cifuentes et al [21,31,47] developed an Au-Cu/CeO 2 catalyst that allows to reduce CO content to less than 100 ppm, but with a higher H 2 loss. The CO-removal temperature has a significant effect on the CO content.…”

“…Therefore, a change in S/E could be used as a strategy to control the amount of CO produced and thus, modify the H 2 /CO ratio in the syngas obtained from ESR. H 2 /CO is a relevant operation condition to design syngas clean-up technologies [31]. However, the addition of a second reactor will reduce the CO concentration to less than 0.008 mole frac (8000 ppm), regardless of the temperature conditions, as shown in Figure 6b.…”

Bimetallic Ru–Pd Supported on Ceo2 for the Catalytic Partial Oxidation of Methane into Syngas

“…These are: (i) supported noble metal-based catalysts (Rh, Ru, Ir, Pt and Pd) [10], and (ii) supported first-row transition metal-based catalysts (Ni, Co and Cu) [11]. Typical supports are Al 2 O 3 [8] and CeO 2 [12]. Noble metals are widely used because, even if they are much more expensive, they are highly active and less sensitive to coke formation [7].…”