| 脉冲电晕放电降解CFC-113和CCl4 |
| 摘要点击 773 全文点击 985 投稿时间：1998-11-18 |
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| 中文关键词 脉冲电晕放电 CFC－113 CCl4 降解 吸附剂 |
| 英文关键词 pulsed corona discharges destruction adsorbent CFC-113 CCl4 |
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| 中文摘要 |
| 催化降解CFC-113和CCl4难度较大。采用脉冲电晕与吸附相结合,在电晕反应器中加入吸附剂(如γ-Al2O3),显着提高了降解效果。实验结果揭示吸附剂的比表面与孔径大小显着影响CFC-113和CCl4的降解反应活性以及副产物臭氧浓度。本研究开发出一种Al2O3-Ⅱ吸附剂,它的比表面为94.4m2/g,孔径<0.05μm,当它与高压脉冲电晕放电相结合时,一方面提高了降解率,另一方面抑制了臭氧生成,达到净化目的。 |
| 英文摘要 |
| Addition of adsorbents(γ-Al2O3) into the corona reactor can enhance decomposition efficiency compared with the case of no packing.The experimental results revealed that surface area and porosity of adsorbent will remarkably affect the destruction efficiency of CFC-113 and CCl4 as well as ozone generation.In this study,it was developed that an adsorbent(Al2O3-Ⅱ)which has primarily smaller pores of diameter<0.05m and relative large surface area of 94.4m2/g demonstrated higher plasma destruction reactivity and lowering ozone generation;while the other adsorbent(Al2O3-Ⅰ)which has lower surface area(20.5m2/g)and higher macroporous(pores of diameter 0.1～0.1m)performed slightly lower destruction efficiency and simultaneously higher ozone generation activity compared with Al2O3-Ⅱ.These information are valuable for the new technique of pulsed corona discharges combined with appropriate adsorbent for the destruction of toxic volatile organic compounds(VOCs). |
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