In-situ FT-IR study on CO2 hydrogenation over Cu catalysts supported on SiO2, Al2O3, and TiO2

Preparation of atomically dispersed Cu species on a TiO2 (110) surface premodified with an organic compound

“…A well-defined single crystal oxide is used as a model substrate to investigate the metal-oxide interaction [1]. Cu on a rutile TiO 2 (110) surface is one of the most widely investigated surfaces [2][3][4][5][6][7][8][9][10] because supported Cu on oxides has important catalytic properties [11][12][13]. These studies have demonstrated that it is usually quite difficult to obtain fine clusters less than 1 nm in size by simple vacuum evaporation of Cu on the TiO 2 (110) [6,8].…”

Latest Advances in the Catalytic Hydrogenation of Carbon Dioxide to Methanol/Dimethylether

“…5.3), supporting the hypothesis that the reactivity of multicomponent catalysts no longer depends only on the availability of Cu sites [11, 25-30, 87, 89]. Particularly, a peculiar surface affinity to CO 2 , enhancing the formation of reactive intermediates, as a key factor of the reactivity of promoted Cu catalysts could be taken into account [28,29,36,[87][88][89][90].…”

“…This seems not a peculiarity, since the formation of various reaction intermediates and precursors at the surface of Al 2 O 3 , SiO 2 and TiO 2 carriers was also reported [88].…”

A Review: CO2 Utilization

“…Al 2 O 3 acts as a refractory oxide and structural promoter to increase the total surface area of catalyst, the distribution of Cu on surface, and the mechanical stability of composite, which can stabilize the Cu/ZnO structure and retard the sintering of Cu particles (Bart and Sneeden, 1987;Chinchen et al, 1988;Toyir et al, 2001b;Wang et al, 2013). However, a negative effect of water was observed due to the hydrophilic nature of the support Al 2 O 3 (Bando et al, 1997;Inui et al, 1997;Bonura et al, 2011).…”