Novel solid base catalysts for Michael additions [Elektronische Ressource] / von Zhijian Li

Novel solid base catalysts for Michael additions Synthesis, Characterization and Application DISSERTATION zur Erlangung des akademischen Grades doctor rerum naturalium (Dr. rer. nat.) im Fach Chemie eingereicht an der Mathematisch-Naturwissenschaftlichen Fakultät I Humboldt-Universität zu Berlin von M.Sc. (Chemistry) Zhijian Li geboren am 27.04.1977 in Fujian, P.R. China Präsident der Humboldt-Universität zu Berlin Prof. Dr. Jürgen Mlynek Dekan der Mathematisch-Naturwissenschaftlichen Fakultät I Prof. Thomas Buckhout, PhD Gutachter: 1. Prof. Dr. Erhard Kemnitz 2. Prof. Dr. Heiner Lieske Tag der mündlichen Prüfung: 18.08.2005 Abstract In contrast to solid acid catalysts, much fewer efforts have been made to study solid base catalysts. In this thesis, preparation, characterization and application of oxides and modified oxide as solid base catalysts were studied. The catalysts include MgO prepared by different methods, potassium-modified ZrO , calcined Mg-Al hydrotalcites, and a novel 2catalyst system Mg(O,F), which was prepared by sol-gel method for the first time. The catalysts were studied by N adsorption/desorption measurement, XRD, FTIR, XPS, TG-2DTA-DTG and NMR. Acid-base properties of the catalysts were investigated by TPD, FTIR spectroscopy and microcalorimetry to correlate with the catalytic behavior.