Hydrogen Production by Steam Reforming of Fusel Oil Using a CeCoO_x Mixed‐Oxide Catalyst

Abstract

Various CeCoOx mixed‐oxide catalysts with different Ce/Co ratios were prepared by surfactant‐assisted template precipitation of CeO2 and Ce3O4. The obtained catalysts were characterized by X‐ray diffraction, X‐ray photoelectron spectra, hydrogen temperature‐programmed reduction, nitrogen physisorption, and transmission electron microscopy. In general, the mixed‐oxide CeCoOx catalysts showed well‐dispersed CeO2 and Co3O4 and good catalytic characteristics including a high specific surface area and porous structure. The effectiveness of the prepared catalysts on the hydrogen (H2) production from steam reforming of fusel oil was studied in a packed‐bed reactor. Co played an important role in C–C scission to break down the large C2–5 molecules into smaller species resulting in H2 formation. Ce could provide supplementary active oxygen to prevent coke formation on Co, resulting in a more stable activity of the mixed‐oxide catalyst throughout the reaction course.

Cu–Ce Bimetallic Oxide Catalyst Regulates the Intermolecular Hydrogen Transfer Reaction of 5-Hydroxymethylfurfural

“…In the Cu 5 /γ-Al 2 O 3 catalyst, no large CuO crystal particles were observed in Figure a-d, demonstrating that the Cu species were uniformly distributed on the surface of the γ-Al 2 O 3 supports. Figure b,c displays two distinct lattice stripe spacings, 0.275 and 0.234 nm, where the lattice spacing of 0.275 nm is attributed to the CuO(1 1 0) facet and the lattice spacing of 0.234 nm to the CuO(1 1 1) facet . In the case of the Ce 5 /γ-Al 2 O 3 catalyst (Figure h-j), the γ-Al 2 O 3 supports was found to be coated with CeO 2 flakes.…”

Heat Transfer at a Particle‐Tube Wall Contact Point: Impact of Catalyst Configuration on Hot Spots

“…The primary aim of their usage is to provide a high ratio of surface area to volume in unit operations 1. In spite of the mentioned advantages, PBCs suffer some shortcomings such as hot spot and multiple steady‐state formations as they are either employed as catalytic reactors (e.g., oxidation, hydrogenation, and steam reforming) or subjected to processes in which heat transfer plays a significant role 2–4.…”