| Summary: | 碩士 === 國立中央大學 === 化學工程與材料工程研究所 === 94 === Two main topic are studied in this research. One is the synthesis of ZSM-5 on ceramic fiber paper. The other is the synthesis of the catalysis of Au/CeO2 on ceramic fiber paper.
In the synthesis of ZSM-5 on ceramic fiber paper, hydrothermal method was applied. By XRD pattern, it proves that the ZSM-5 crystal coated on the surface. However, SEM photographs show that ceramic fibers are not completely covered with ZSM-5. Ceramic fiber paper after acid treatment provides more nucleation sites. The ceramic fibers are completely covered by an uniform layer of well shaped ZSM-5 crystals after 10 hours heating at 170~190℃. Finally, the cumene cracking reaction test manifests that ZSM-5 on ceramic fiber paper show good activity.
Synthesis of the catalytic Au/CeO2 on ceramic fiber paper is the goal of second part study. Sol-gel method was used to synthesize CeO2 on ceramic fiber paper. The ceramic fiber paper was soaked in the precursor solution for several minutes and several times. There are six factors investigated for the synthesis : the time and the temperature of precursor aged, the acid concentration of precursor, the time for soaking fiber paper in the precursor, the times for coated fibers and the temperature of calcinations. The precursor solution is stable for 2-3 months. By SEM photographs and XRD patterns show that the CeO2 cover the ceramic fiber completely and the particle size of CeO2 is 10-20 nano meter. Finally, we use the deposition-precipitation method to load Au on the CeO2/fiber paper. The color change of CeO2 coated paper and EDX analysis, it show successful for loading Au on CeO2/fiber paper.
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