Preparation of uniformly dispersed nickel/silica catalysts from synthetic nickel-chrysotile

Asymmetrically modified bimetallic catalyst for the enantio-differentiating hydrogenation of methyl acetoacetate

“…Various Ni sources, such as Raney Ni, Ni powder prepared from Ni oxide, commercial fine Ni powder, and supported Ni, have been used for preparing the modified Ni catalysts. Since modified, supported catalysts have much more variables for the preparation than the unsupported catalysts, many studies were performed in order to attain a higher enantioselectivity during the fine tuning of the variables [3][4][5][6][7]. The effect of addition of a second metal as a promoter to the tartaric acid modified, supported Ni catalyst was first reported by Orito et al [8].…”