Kinetics of ethanol steam reforming over Cu–Ni/NbxOy catalyst

Elucidation of metal and support effects during ethanol steam reforming over Ni and Rh based catalysts supported on (CeO2)-ZrO2-La2O3

“…Both transition [15][16][17] and noble [18][19][20] metals have been extensively examined as catalysts for ESR reactions, indicating that ethanol activation pathways depend on the metal nature. Rh based catalysts are considered as the most active due to their excellent C-C and C-H bond scission affinity, high water gas shift (WGS) activity and high resistance towards carbon deposition [21,22].…”

Recent Status in Catalyst Modification Strategies for Hydrogen Production from Ethanol Steam Reforming

“…On the basis of ESR pathway analysis, a power law model with non‐linear regression with least‐square method was proposed to fit the experimental results and predicted data in previous studies [61,71,72] . The Eley‐Rideal (E‐R) mechanism and Langmuir‐Hinshelwood (L‐H) mechanism with a good correlation have been used to express the kinetics of ESR [36,73–75] .…”

“…Just as a volcanic trend of reaction rate in ESR with the increase of H 2 O partial pressure. [68,71] Thus, introducing a metal oxide with strong oxygen mobility to boost the surface coverage of O-containing species at the carbon deposit spot is a favorable strategy to improve the catalytic activity and carbon deposition capacity simultaneously. Based on a temporal analysis of products (TAP) setup, Theofanidis et al [327] (2) carbon gasification is carried out through the active oxygen provided by the oxygen vacancy.…”

“…However, the excessive introduction of steam will cause expensive gasification costs and catalyst deactivation owing to an active site blocking effect and competitive adsorption. Just as a volcanic trend of reaction rate in ESR with the increase of H 2 O partial pressure [68,71] . Thus, introducing a metal oxide with strong oxygen mobility to boost the surface coverage of O‐containing species at the carbon deposit spot is a favorable strategy to improve the catalytic activity and carbon deposition capacity simultaneously.…”

“…On the basis of ESR pathway analysis, a power law model with non-linear regression with least-square method was proposed to fit the experimental results and predicted data in previous studies. [61,71,72] The Eley-Rideal (E-R) mechanism and Langmuir-Hinshelwood (L-H) mechanism with a good correlation have been used to express the kinetics of ESR. [36,[73][74][75] In the former, the H 2 O molecules in gas phase can react with adsorbed hydrocarbon and oxygenated intermediate to form CO 2 and H 2 , where the dissociation of adsorbed ethanol or ethoxy occurring in surface vacant sites is regarded as the rate determining step (RDS).…”