高效舱室空气净化可再生介微孔吸附材料

目的针对目前舰船舱室内空气封闭性强、污染物来源多、成分复杂且高温、高湿的特点,研发高效可再生介微孔吸附材料,以解决目前吸附法存在的选择性及再生困难问题。方法研究选取SBA-15为载体,并将金属氧化物催化剂负载在SBA-15上制备介微孔吸附材料,以甲醛、甲苯和醇类有机物为处理对象评价材料性能。结果在催化剂质量分数为0.12%时,负载催化剂的介微孔材料的有机物容量达到最高,112.3 mg苯/g催化剂,119.7 mg甲苯/g催化剂,147.3 mg甲醛/g催化剂,184.l mg乙醇/g催化剂,为活性炭吸附容量的1.5倍以上。吸附饱和再生30 min后有机物容量为,98.6 mg苯/g催化剂,106.3 mg甲苯/g催化剂,132 mg甲醛/g催化剂,169.7mg乙醇/g催化剂,说明其具有良好的再生性能。结论能够在广泛进气浓度和停留时间条件下使得处理后的污染物浓度低于严格的《民用建筑工程室内环境污染控制规范(GB 50325—2001)》所允许的浓度,并且在高温高湿条件下可以高效再生、重复使用。

High Efficient Renewable Micro/Mesoporous Adsorption Material for Cabin Air Decontamination

The paper aims to develop highly efficient regenerable meso-pore adsorption material with characteristics such as tightly closed, multi pollutant sources and complex composition, high temperature and high humidity for indoor air quality control on ship to solve selectivity and regeneration difficulty in the existing adsorption method. SBA-15 was used as a carrier to prepare mesoporous microporous adsorption material, on which metal oxide catalyst was loaded to prepare micro/mesoporous adsorption material. And the properties of the materials were studied with formaldehyde, toluene and alcohol as organic pollutant. The catalyst loaded meso-pore adsorption material reached the highest organic capacity when the catalyst content was 0.12%: 112.3 mg benzene/g catalyst, 119.7 mg toluene/g catalyst, 147.3 mg formaldehyde/g catalyst, 184.1 mg ethanol/g catalyst, which was 1.5 times more than the adsorption capacity of activated carbon. The adsorption capacity of organic matter after regeneration for 30 min was: 98.6 mg benzene/g catalyst, 106.3 mg toluene/g catalyst, 132 mg formaldehyde/g catalyst, 169.7 mg ethanol/g catalyst, illustrated its good regeneration performance. The pollutant concentration after treatment is lower than the Code for indoor environmental pollution control of civil building engineering (GB50325-2001). And the material could be efficiently regenerated and repeatedly used under high temperature and high humidity conditions.