氧化铝负载不同晶型MnO2用于低温等离子体催化耦合降解乙醛和苯
Industrial Catalysis（2012）
Abstract
制备了α-MnO2/γ-Al2O3和β-MnO2/γ-Al2O3负载型锰系氧化物催化剂,通过XRD、TEM、TG和H2-TPR等手段对催化剂进行表征,分别考察催化剂与低温等离子体耦合协同去除乙醛和苯的效果.结果表明,MnO2/γ-Al2O3催化剂的加入明显提高低温等离子体去除挥发性有机物的效率及CO2选择性,α-MnO2/γ-Al2O3的耦合效果优于β-MnO2/γ-Al2O3.低温等离子体输入电压为16.8 kV,α-MnO2/γ-Al2O3与低温等离子体耦合乙醛去除率可达100％.降解苯的效率较低,这是由于苯的化学结构更稳定.
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Key words
non-thermal plasma,catalytic chemistry,acetaldehyde,manganese dioxide,benzene
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