Boosting the performance of Ni/Al₂O₃ for the reverse water gas shift reaction through formation of CuNi nanoalloys

Abstract

Adding Cu to Ni/Al2O3 is an excellent strategy to suppress methane formation and enhance carbon monoxide yield through formation of alloyed nanoparticles.

Bridging the Catalyst Reactivity Gap Between Au and Cu for the Reverse Water Gas Shift Reaction

“…Alloys are especially interesting because it might be possible to modify their activity and selectivity for rWGSR by changing their precise metal composition. Many bimetallic nanoparticles have recently been studied for the rWGSR, for instance, unsupported FeCo, 31 unsupported CuNi, 32 CuNi on Al 2 O 3 , 33 NiAu on SiO 2 , 34 PtCo on TiO 2 , 35 and CuIn on ZrO 2 . 36 In this study, we consider CO 2 dissociation (reaction eq 2) on (111) surfaces of alloys with up to four elements picked from Au, Ag, Cu, Pt, and Pd.…”

Bridging the Catalyst Reactivity Gap between Au and Cu for the Reverse Water–Gas Shift Reaction

“…Alloys are especially interesting because it might be possible to modify their activity and selectivity for the rWGSR by changing their precise metal composition. Many bimetallic nanoparticles have recently been studied for the rWGSR, for instance, unsupported FeCo, 32 unsupported CuNi, 33 CuNi on Al 2 O 3 , 34 NiAu on SiO 2 , 35 PtCo on TiO 2 , 36 and CuIn on ZrO 2 . 37 In this study, we consider CO 2 dissociation (reaction eq 2) on (111) surfaces of alloys with up to four elements picked from Au, Ag, Cu, Pt, and Pd.…”

Rationalization of the sub-surface segregation in nanoalloys of weakly miscible metals

“…Since about two decades nanoalloys have been widely investigated, both experimentally and theoretically, in the perspective of many technological applications [1][2][3][4] among which nanomedecine and catalysis have given rise to a very abundant literature because of nowadays essential societal reasons. [5][6][7][8][9][10] The mixing of at least two metallic species in one nanoparticle offers the possibility of tuning its properties and possibly to improve the known properties of the pure constituents. A major concern with nanoalloys is their stability after synthesis related to their thermodynamically stable structure towards which the system could evolve over time while possibly losing the targeted properties.…”

“…During the past two decades, nanoalloys have been widely investigated, both experimentally and theoretically, in regard to many technological applications, [1][2][3][4] among which nanomedicine and catalysis have given rise to an abundance of literature because of current issues facing society. [5][6][7][8][9][10] The mixing of at least two metallic species in one nanoparticle offers the possibility of tuning properties and improving the known properties of the pure constituents.…”