Copper–cobalt oxide spinel supported on high-temperature aluminosilicate carriers as catalyst for CO–O2 and CO–NO reactions

摘要: Abstract A copper–cobalt oxide spinel supported on high-temperature aluminosilicate carriers (90 wt% boehmite (pseudoboehmite)+10 wt% activated bentonite, calcined at Tcalcin=800, 1000, 1050 or 1150°C) has been prepared, characterized and tested in CO–O2 CO–NO reactions. X-ray diffraction (XRD) shown the presence of different forms Al2O3 carriers: γ-Al2O3 for B800; γ-Al2O3+δ-Al2O3 B1000, δ-Al2O3+θ-Al2O3+α-Al2O3 B1050 α-Al2O3 carrier B1150. The have very high mechanical strength. With increasing Tcalcin surface area changes from 133 to 13 m2/g. XRD a phase all Cu–Co samples. adsorption capacity supports towards Cu ions is related essential importance Co loading. amounts loaded metals change an opposite manner with Tcalcin. However, total amount (Cu+Co) almost constant. weight ratio Co : Cu increases that closer stoichiometric value CuCo2O4 spinel. It suggested whole engaged formation observed by XRD. catalysts activity both NO–CO same order SB800