In-situ Modulation Excitation IR study on the dominant product of Pt-catalyzed aromatic ketone hydrogenation
Chemoselective hydrogenation of aromatic ketones plays an important role in producing fine chemicals and pharmaceuticals.One of the simplest model reactions is acetophenone (AP) hydrogenation to corresponding alcohol 1-phenylethanol (PE).We studied the role of dominant product 1-phenylethanol (PE) on a Pt/Al2O3 catalyst.In situ attenuated total reflection infrared spectroscopy (ATR-IR) in combination with modulation excitation spectroscopy (MES) and phase sensitive detection (PSD) revealed that PE was more strongly adsorbed on Al2O3 than on Pt.PE was hardly hydrogenated to 1-cyclohexylethanol (CE) on the support.CO from AP decomposition didnt inhibit PE adsorption on the support.The strong adsorption and accumulation of PE on the support allows active sites on Pt always accessible to AP,achieving efficient Pt-catalyzed catalysis.
Acetophenone chemoselective hydrogenation dominant product 1-phenylethanol (PE) Pt/Al2O3 Attenuated total reflection infrared spectroscopy (ATR-IR) Modulation Excitation Spectroscopy (MES) Phase Sensitive Detection (PSD)
Mengmeng Chen Nobutaka Maeda Alfons Baiker Jun Huang
Laboratory for Catalysis Engineering, School of Chemical and Biomolecular Engineering,The University Institute for Chemical and Bioengineering, Department of Chemistry and Applied Biosciences, ETH Zuri
国际会议
北京
英文
271-274
2012-12-16（万方平台首次上网日期，不代表论文的发表时间）