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- W38397319 abstract "A (R,R)-tartaric acid-NaBr-modified nickel catalyst was prepared by a pre-modification in THF for the enantio-differentiating hydrogenation of methyl acetoacetate. Pre-modification of the nickel catalyst in a THF solution of tartaric acid and NaBr was carried out at 273-373 K and at atmospheric pressure to 9 MPa of hydrogen. The modification at 373 K and 9 MPa of hydrogen pressure was necessary for attaining a high enantio-differentiating ability (e.d.a.) and an e.d.a. durability. The determination of the tartaric acid adsorbed on the nickel surface revealed that modification at a high temperature and a high hydrogen pressure resulted in greater amounts of tartaric acid being adsorbed on the catalyst surface, which produced a high e.d.a. durability." @default.
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- W38397319 date "2006-01-01" @default.
- W38397319 modified "2023-09-25" @default.
- W38397319 title "Modification Method Studies for the Preparation of Tartaric acid-NaBr-Modified Nickel Catalyst for the Enantio-differentiating Hydrogenation of Methyl Acetoacetate" @default.
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- W38397319 doi "https://doi.org/10.1016/s0167-2991(06)80945-6" @default.
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