Stereo‐ and Chemoselective Character of Supported CeO2 Catalysts for Continuous‐Flow Three‐Phase Alkyne Hydrogenation
作者： Gianvito Vilé , Sabine Wrabetz , Leonard Floryan , Manfred Erwin Schuster , Frank Girgsdies
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摘要: TiO2-, Al2O3-, and ZrO2-supported CeO2 catalysts with different Ce loadings were prepared by wet impregnation of the carriers an acidified solution cerium ammonium nitrate. The calcined characterized bulk surface-sensitive techniques, which included microcalorimetry, evaluated in three-phase hydrogenation alkynes under continuous-flow conditions at variable temperature (293–413 K) pressure (1–90 bar). A number acetylenic compounds, contain terminal or internal triple bonds, conjugated unsaturations, additional functionalities, systematically assessed. results revealed full stereo- chemoselective character ceria catalysts, outperform well-known Lindlar catalyst, open promising perspectives for revolutionary use a cost-effective oxide production olefinic compounds vitamin fine chemical industries.
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