催化学报

催化学报 ›› 2012, Vol. 33 ›› Issue (6): 941-951.DOI: 10.1016/S1872-2067(11)60391-4

• 研究论文 • 上一篇    下一篇

低温等离子体与 MnOx/γ-Al2O3 协同催化降解正己醛

陈春雨, 刘彤, 王卉, 于琴琴, 范杰, 肖丽萍a, 郑小明b   

  1. 浙江大学催化研究所, 浙江杭州 310028
  • 收稿日期:2011-12-12 修回日期:2012-01-20 出版日期:2012-05-30 发布日期:2012-05-30

Removal of Hexanal by Non-thermal Plasma and MnOx/γ-Al2O3 Combination

CHEN Chunyu, LIU Tong, WANG Hui, YU Qinqin, FAN Jie, XIAO Lipinga, ZHENG Xiaomingb   

  1. Institute of Catalysis, Zhejiang University, Hangzhou 310028, Zhejiang, China
  • Received:2011-12-12 Revised:2012-01-20 Online:2012-05-30 Published:2012-05-30

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摘要： 研究了在低温等离子体和催化剂共同作用下低浓度正己醛的降解反应. 结果表明, 等离子体与 γ-Al2O3 之间产生了很好的催化协同作用, 在低放电功率 (2.8 W) 和低温 (80 °C) 下, 干燥空气气氛中, γ-Al2O3  对 0.12% 正己醛的去除率为 87.1%; 当 γ-Al2O3 负载 7.5%MnOx 后, 正己醛去除率达到 96.5%, 其效果与 Pt/γ-Al2O3  相当. 7.5%MnOx/γ-Al2O3 在实验条件下连续使用 50 h, 其催化活性未见下降.

关键词: 餐饮油烟, 正己醛, γ-氧化铝, 低温等离子体, 协同作用

Abstract: The removal of hexanal by a combination of a non-thermal plasma and catalyst was studied. There was a synergism between the plasma and γ-Al2O3 that gave a hexanal removal efficiency of 87.1% at 80 °C and 2.8 W discharge power. The removal efficiency was improved to 96.5% when the γ-Al2O3 was loaded with 7.5% MnOx, and a comparable efficiency was also obtained with a Pt/γ-Al2O3 catalyst. The 7.5%MnOx/γ-Al2O3 catalyst was stable over 50 h use during which the removal efficiency did not decline.

Key words: cooking oil fume, hexanal, γ-aluminum oxide, non-thermal plasma, synergistic effect