Reduction of isopropanol by plasma treatment combined with zeolite coating metal catalysts

• Main Authors: Chien,Weilun, 簡偉倫
• Other Authors: Ken-Lin Chang
• Format: Others
• Language: zh-TW
• Published: 2019
• Online Access: http://ndltd.ncl.edu.tw/handle/k6ms73

碩士 === 國立中山大學 === 環境工程研究所 === 107 === In recent years, the innovation and diversified design of electronic products have led to continuous improvement of technology. With a large increase in capacity demand, led to the use of chemicals and raw materials. Resulting in many VOCs and other issues. In order to decrease the VOCs emission or secondary pollution on the environment and human health, the effective control of VOCs is necessary. In this study, the plasma technology combined with the zeolite-type metal catalyst prepared by the impregnation method was used to investigate the feasibility for the degradation of isopropanol (IPA), which commonly emission from the high-technology industry. In addition, the selectivity of acetone, carbon dioxide and the decomposition efficiency of ozone under optimal condition were also discussed. The main process of this study was as follows: (1) Selected VOCs for test. (2) Catalyst carrier selection for the plasma treatment system (zeolite). (3) The catalyst load metal was selected. (4) Set up DBD plasma system. (5) Preparation of calibration curve and experimental instruments. (6) VOCs aeration system set up. (7) The analysis of catalyst characteristics. The results showed that the addition of metal catalyst coating manganese oxide to the plasma treatment had good effects on isopropanol conversion, acetone selectivity, carbon dioxide selectivity and ozone decomposition rate. The optimal calcination temperature of catalyst preparation was 500 °C. Finally, the amount of catalyst in the reaction zone was compared. The results showed that 3 g of catalyst was decreasing the degradation of pollutant. Due to reducing of electric field and electron density, which also reducing the chance of inelastic collision and ozone generation. In addition, due to the good decomposition efficiency of metal manganese for ozone, the efficiency of 3 g manganese metal catalyst for decomposing ozone was better than that of 1 g manganese metal catalyst. The optimal condition of this study was 1 g of manganese metal catalyst (calcining temperature of 500 ° C), which can effectively decompose IPA to 84.16%, compared with 71.96% efficiency of plasma only.