Mechanistic and chemoselective investigations on nitrene transfer reactions mediated by a novel iron-mesoionic carbene catalyst

Influence of the preparation method on Ni/SiO2 catalysts for selective hydrogenation of succinic anhydride to γ-butyrolactone

“…The difference in Ni crystallite sizes would be related to the different precursors resulted from different preparation methods. [42][43][44] N 2 adsorption-desorption isotherms and pore size distributions of the Ni/SiO 2 catalysts are depicted in Fig. 4.…”

“…4(a) that all samples displayed type IV isotherms with H3-type hysteresis loops at the P/P 0 of 0.4-0.9, suggesting the mesoporous structure of all the Ni/SiO 2 catalysts. 44 The physical properties of the Ni/SiO 2 catalysts prepared with different methods are displayed in Table 1. It was found in Table 1 that Ni/SiO 2 -AE showed a specific surface area of 291.5 m 2 g −1 and pore volume of 0.49 cm 3 g −1 , larger than those of Ni/SiO 2 -SP and Ni/SiO 2 -OP.…”