Effects of C5-heterocyclic compounds on CO adsorption and crotonaldehyde hydrogenation over supported Cu and Co catalysts

Chemoselective hydrogenation of carbonyl compounds over heterogeneous catalysts

“…where k are lumped parameters [149,[199][200][201]. Similarly to the previous Model I, the parameter estimations demonstrated a high degree of explanation (98.93%).…”

The effect of metal deposition order on the synergistic activity of Au–Cu and Au–Ce metal oxide catalysts for CO oxidation

“…The adsorption of CO on Al 2 O 3 produced a single band at about 2203 cm -1 , which is assignable to the Al +3 −CO carbonyl [44]. The adsorption of CO on the Cu x O y /Al 2 O 3 catalyst produced new bands at about 2103 and 2142 cm -1 , which are assignable to Cu 0 −CO and Cu + −CO carbonyls [42,45,46]. No bands for surface Cu 2+ carbonyls were detected, which may be due to weak and reversible adsorption of CO on Cu 2+ species at 25 °C [44,47].…”

“…8, spectrum e). Davydov [44] and Hutchings et al [45] assigned the bands at about 2120 and 2136 cm -1 to Cu σ+ −CO (0<σ<1) and Cu + −CO carbonyls, respectively. Centeno et al [36] and Klimev et al [59] reported that bands in the 2130−2155 cm -1 range are assignable to Au δ+ −CO (0<δ<1).…”

Guidelines to Achieving High Selectivity for the Hydrogenation of α,β-Unsaturated Aldehydes with Bimetallic and Dilute Alloy Catalysts: A Review

“…17). (UAL) conversion on: (a) Co and Co-rich bimetallics for the hydrogenation of crotonaldehyde, 85,283 cinnamaldehyde, 157,215 furfural, 226 and citral; 284,285 (b) Ni and Ni-rich bimetallics for the hydrogenation of crotonaldehyde, 135,136,[286][287][288][289] cinnamaldehyde, 136,152,237,290,291 and furfural. 61,135,136,[292][293][294][295][296][297][298] Dotted arrows indicate that the data are derived from the same study.…”