高校化学工程学报2012，Vol.26Issue(2)：338-343,6.
气相低浓度甲苯在超稳Y分子筛的吸附-脱附性能
Adsorption-Desorption of Toluene in Gas Phase on Dealuminated Ultrastable Y Zeolites
摘要
Abstract
In order to increase the selective adsorption of volatile organic compounds (VOCs) on faujasite type zeolites, dealuminated ultrastable Y zeolites (USY) were prepared by the high-temperature hydrothermal technology. The results show that the microspores and surface area of USY decrease with the increase of Si/Al ratio of the USY, but secondary pores or mesoporous structures are formed after hydrothermal treatment. It was found that the ability of selective adsorption for toluene is enhanced with the increase of Si content in the zeolite framework. The amount of toluene adsorbed is 5.6 times higher than that of water adsorbed on USY (Si/Al=22) zeolites under the condition of RH=50%. The TG-DTG test shows that, after adsorption, the used USY (Si/Al=22) zeolites could be regenerated completely at low temperature (160℃), which allows it to be still reusable after several adsorption desorption cycles.关键词
超稳Y分子筛/吸附/脱附/甲苯/VOCsKey words
dealuminated ultrastable Y zeolites/ adsorption/ desorption/ toluene/ VOCs分类
化学化工引用本文复制引用
卢晗锋,周春何,周瑛,黄海凤,陈银飞..气相低浓度甲苯在超稳Y分子筛的吸附-脱附性能[J].高校化学工程学报,2012,26(2):338-343,6.基金项目
浙江省科技重大专项(2007C13042) （2007C13042）
浙江省自然科学基金(Y5090202). （Y5090202）
