| Summary: | 碩士 === 國立臺灣科技大學 === 高分子系 === 98 === This study focuses on the hybrid catalyst for preparation and discussion of manufacturing process. Hybrid catalyst is easy to separation form reactions and recycling simpler. The hybrid catalyst is included of both homogeneous and heterogeneous catalyst of the advantages. It is more convenience to use in large-scale industrialization. With the rise of environmental consciousness in recent years, the industrialization process is compliance with the principles of sustainable development and green chemistry. In this research, catalytic epoxidation experiments using ethanol instead of the traditional halogenated hydrocarbon or toxic solvents, hydrogen peroxide as oxygen source under conditions of catalytic epoxidation of cyclooctene.
This thesis for the use of nano inorganic that are attapulgite and nano SiO2 as a carrier, silane coupling agent using the surface of inorganic compounds, organic / inorganic interface modification, then soap-free emulsion polymer P -4VP on the inorganic surface modification, then the supported on the olefin epoxidation with good catalytic properties of molybdenum catalyst, as a hybrid catalyst, were carried out on the epoxidation of cyclooctene experiment results show that 8 cycles recycling experiment, the two kinds of nano inorganic supported the activity of molybdenum catalysts are excellent, MoO2 (acac) 2 / attapulgite clay can maintain 80% of the conversion efficiency; and MoO2 (acac) 2 / nano SiO2 the first 7 cycles can be more than 90%.
Using FT-IR patterns of the various stages to analysis that the process of modification and the modification of the molecular structure and the shifted of functional groups, the TGA patterns are be used to analysis thermal properties. By the calculation of weight loss, we can figure out the process of the modified polymer supported. FE-SEM pictures are used to observed in each phase of the modification process, there are apparent morphology changes with the size. Finally, GC-MS verified the activity of nano inorganic Supported Mo catalyst.
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