Methanol–steam reforming on Cu/ZnO/Al2O3 catalysts. Part 2. A comprehensive kinetic model

Redox Behavior of Copper Oxide/Zinc Oxide Catalysts in the Steam Reforming of Methanol Studied by in Situ X-Ray Diffraction and Absorption Spectroscopy

“…It can be concluded that the changes of bulk phase and gaseous product composition observed during oxygen addition cycles permit one to distinguish between different active states of copper operative in the Cu/ZnO system. The results support previous assumption based on kinetic analysis of surface reactions that parallel reaction might occur on different active copper phases during methanolsteam reforming ( 8,6). Interestingly, the oxidation and reduction curves of Cu metal in the upper graph in Fig.…”

“…This interpretation is closely related to the model of the active Cu/ZnO phase in methanol synthesis developed by Klier (25). Peppley et al on the basis of a surface mechanism for methanol steam reforming proposed in a recent publication that the nature of the active sites differs according to their function (8), but no structural details are provided. The effects of preparation condition of precursors for Cu/ZnO catalysts upon precursors phases, surface structure and catalytic activity for steam reforming of methanol has been investigated by Shen et.…”

“…However, a detailed reaction mechanism is still under debate (5,6,7). In a kinetic model by Peppley et al it is assumed that different active phases are responsible for the methanol decomposition, methanol-steam reforming, and the water-gas shift reaction (8).…”

Production of hydrogen from methanol over Cu/ZnO catalysts promoted by ZrO2 and Al2O3

“…In the literature, copper-based catalysts have received considerable attention for production of H 2 by SRM [5][6][7][8][9][10][11][12][13][14][15][16][17][18][19][20][21]. Recent papers have discussed the POM reaction [22][23][24], as well as the combined process for production of H 2 [25][26][27][28][29][30][31][32][33][34][35][36][37][38].…”

Catalytic Hydrogen Production from Bioethanol

“…A similar approach is also applicable for water adsorption and co-adsorption of ethanol and water by choosing suitable isotopic labeled elements. Compared with the kinetic studies focused on the steam reforming over single carbon containing reactants such as methanol [118][119][120][121][122] and methane [123][124][125][126][127] (MSR) which have been investigated intensively for tens of years, the kinetic investigations performed over ethanol steam reforming (ESR) reaction are still in their burgeoning stage, which might be due to the relatively complicated reaction networks involved originating from the increase of carbon atom. However, the knowledge accumulated during the systematic explorations of the kinetic mechanisms occurring during MSR provides a valuable starting point for ESR researchers to expand upon.…”