High temperature water–gas shift reaction over hollow Ni–Fe–Al oxide nano-composite catalysts prepared by the solution-spray plasma technique

Mechanistic study of the effect of chlorine on selective CO methanation over Ni alumina-based catalysts

“…The Ni-Al mixed oxide powder was prepared by a solutionspray plasma technique [9,10]. A water solution of Ni nitrate and Al nitrate was mixed and sprayed into an evacuated chamber through an argon plasma flame with 10% oxygen in the argon carrier gas.…”

Catalytic activity and durability of a mesoporous silica-coated Ni-alumina-based catalyst for selective CO methanation

“…They mentioned that Fe atoms were enriched on the alloy particles, enhanced the reforming reaction, and suppressed coke formation due to their ability to supply oxygen species. On the other hand, our group reported that coke deposition was significantly suppressed by Fe addition to Ni/Al 2 O 3 [16] and Ni/CeO 2 [17] catalysts during the water-gas shift reaction because of the suppression of CO adsorption. In the present study, we propose that the essential role of Fe for the suppression of the deactivation may be the decrease of CO surface coverage.…”

The effect of Zn addition into NiFe2O4 catalyst for high-temperature shift reaction of natural gas reformate assuming no external steam addition

“…Watanabe et al have explained that the more-reducible oxides in the WGSR accelerate CO oxidation via donation of their lattice oxygen, which promotes the WGSR rate while comparatively slowing the methanation rate of adsorbed CO [18]. In this manner, the ZNF catalyst is expected to enhance HTS activity and suppress methanation with improved reducibility (redox property) relative to the NF catalyst.…”