Nanostructured Pd modified Ni/CeO2 catalyst for water gas shift and catalytic hydrogen combustion reaction

Ni/HZSM-5 catalyst preparation by deposition-precipitation. Part 1. Effect of nickel loading and preparation conditions on catalyst properties

“…The binding energies (BEs) of the most intense Ni 2p 3/2 component of each catalyst, their relative proportion percentage, and the Ni/Si atomic ratio are summarized in Table 4. The spectra displayed a peak at a BE of 852.2 ± 0.2 eV assigned to Ni 0 , together with another peak at a higher binding energy, 854.4 ± 0.3 eV, corresponding to NiO species [26][27][28][29][30]. The peaks at around 870 eV and 872 eV in the Ni 2p 1/2 region also correspond to Ni 0 and NiO species, respectively.…”

“…As with the previous catalyst preparations, XPS analysis of the Ni 2p region revealed two partially overlapped Ni 2p doublets in addition to a satellite peak. The spectra displayed peaks at a BE of 852.2 ± 0.2 eV and 870 eV, which are assigned to Ni 0 , while both peaks at 854.4 ± 0.3 eV and 872 eV, correspond to NiO species [26][27][28][29][30]. The low intensity peaks at about 858 eV and 876 eV are attributed to satellite peaks.…”

The effect of preparation method on Fe/Al/Cu oxide-based catalyst performance for high temperature water gas shift reaction using simulated waste-derived synthesis gas

“…It should be noted that the FAC-CP catalyst has higher concentration of reduced Cu species than others. It is well known that the reduced Cu species play as a catalytically active species in WGS reaction [35]. Thus, higher concentration of reduced Cu species in the FAC-CP catalyst is expected to show higher activity in WGS reaction.…”

Pulse Studies to Decipher the Role of Surface Morphology in CuO/CeO2 Nanocatalysts for the Water Gas Shift Reaction

“…The water-gas shift reaction (WGS, CO + H 2 O→ H 2 + CO 2 ) has become one of the most important processes in the chemical industry for the production of clean molecular hydrogen for proton exchange membrane fuel cells (PEMFCs) [1]. As the reaction is exothermic ( H = -41.1 kJ/mol) [2] and equilibrium limited, a high conversion of CO can be obtained with a two-stage process: a high temperature shift (350-500 °C) using mixtures of Fe-Cr oxides as catalysts and a low temperature shift (200-250 °C) with Zn-Al-Cu oxides as catalysts [3].…”