摘要
考察了在干燥气氛下不同氧化物催化剂对非热等离子体催化降解甲苯的影响。从甲苯降解率、碳平衡、CO2选择性和O3去除4个方面,对比了氧化物催化剂的介电性能、表面供氧能力和比表面积与多孔结构对反应产生影响的强弱。结果表明,催化剂的介电性能有利于甲苯降解率、碳平衡和O3产量的提高,但对CO2选择性和O3去除的影响极小;一定能量密度下,催化剂比表面积与多孔结构对CO2选择性和O3去除所产生的影响要强于介电性能;催化剂表面供氧能力可明显促进反应的进行,其对反应所产生的影响要强于比表面积与多孔结构。
The effects of different oxide catalysts on NTP catalytic decomposition toluene in dry atmosphere were investigated in this work. For different catalysts, the decomposition efficiency of toluene, carbon balance, CO2 selectivity and O3 removal were studied through the dielectric property, surface oxygen delivery capacity, specific surface area and pore structure, respectively. The results show that the decomposition efficiency of toluene, carbon balance and the outlet concentration of O3 can be improved by the dielectric property. However, the dielectric property doesn’t affect the CO2 selectivity and O3 removal at all. For a given specific energy density, the effect of specific surface area and pore structure on the CO2 selectivity and O3 removal is more significant than dielectric property. Additionally, the surface oxygen delivery capacity of the catalysts could promote obviously the decomposition reaction of toluene, and the influence is stronger than specific surface area and pore structure.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第7期2655-2661,共7页
Chinese Journal of Environmental Engineering
基金
国家"863"高技术研究发展计划项目(2013AA065005)
国家自然科学基金资助项目(50978103
51108187)
中央高校基金科研业务费专项资金项目(2012ZM0041)
关键词
氧化物
催化剂
非热等离子体
甲苯
表面供氧能力
oxide
catalyst
non-thermal plasma
toluene
surface oxygen delivery capacity
