Ethanol decomposition and steam reforming of ethanol over CeZrO2 and Pt/CeZrO2 catalyst: Reaction mechanism and deactivation

Hydrogen Production by Steam Reforming of Ethanol on Rh-Pt Catalysts: Influence of CeO2, ZrO2, and La2O3 as Supports

“…As reported by Kaila et al [61], the presence of an alloy on these bimetallic catalysts is possible with all Rh/Pt ratios because of the miscibility of the RhxPt1−x system. The RhxPt1−x alloys result in a strong Pt enrichment of the surface as the temperature increases [35,47] which agrees with our results on the aged RhPt/CeO2 catalyst, where Rh was not observed on the surface by XPS and diminished its surface concentration in EDX (Section 2.4.2). The strong oxidation state of the metals on this catalyst is consistent to the great oxygen mobility from the CeO2 support.…”

Adsorption/Desorption Behavior of Ethanol Steam Reforming Reactants and Intermediates over Supported Cobalt Catalysts

“…As proposed by Virginie et al [55] and Lima et al [56,57], the acetate species can also accumulate on the catalyst surface and lead to coke formation, resulting in deactivation if oxygen supplied through catalyst surface is insufficient. If the surface is highly acidic, ethanol dehydration may dominate the reaction pathway and result in the formation of H 2 O and C 2 H 4 , which is the major precursor to coke through polymerization (Scheme 6 of Fig.…”

Steam reforming of ethanol over K promoted Co catalyst

“…5 shows IR spectra during ethanol-TPD over Co/␣-Al 2 O 3 and Co/1K/␣-Al 2 O 3 catalysts. Assignment of the adsorbed species was conducted based on the literature [26,[41][42][43][44][45][46][47][48][49][50][51][52]. When ethanol was adsorbed at 323 K, C-H stretching of CH 3 -and -CH 2 -(around 3000 cm −1 ), C-H bending of CH 3 -and -CH 2 -(1450 and 1380 cm −1 ), and C-C-O stretching (1120 and 1070 cm −1 ) vibrations peaks were observed.…”