日用化学工业（中英文）2025，Vol.55Issue(3)：313-321,9.DOI:10.3969/j.issn.2097-2806.2025.03.006
酸改性NaY分子筛对高湿度下甲苯的吸附研究
Adsorption of toluene by acid-modified NaY molecular sieve at high humidity
摘要
Abstract
To solve the problem that the adsorption performance of molecular sieve on VOCs decreased sharply under humid conditions,in this work,hydrochloric acid and citric acid were respectively used to dealuminate NaY molecular sieve to prepare high-performance water-resistant NaY molecular sieve.X-ray diffraction(XRD),N2 adsorption-desorption,scanning electron microscopy(SEM)and X-ray fluorescence spectroscopy(XRF)were used to investigate the changes in the skeleton structure,specific surface area and element content of the NaY molecular sieve before and after modification.The adsorption of toluene was tested under static water vapor and humid conditions.The results showed that the adsorption capacity for static water vapor gradually decreased after modification.When the relative humidity(RH)was 80%,the most successful modification effect was indicated by 0.5M-CA-NaY molecular sieve whose breakthrough time and saturated adsorption capacity of toluene were 6 times and 4.3 times higher than that before modification,respectively.The adsorption kinetic model showed that the adsorption process of NaY molecular sieve before and after modification was mainly monolayer adsorption.After 5 cycles of adsorption-desorption,0.5M-CA-NaY molecular sieve showed excellent regeneration performance and still had a recycling rate of more than 95%.关键词
NaY分子筛/脱铝改性/动态吸附/动力学模型/再生性能Key words
NaY molecular sieve/dealumination/dynamic adsorption/dynamic model/regenerability分类
环境科学引用本文复制引用
李胜,孟杰,刘经伟,高丙莹,姚超..酸改性NaY分子筛对高湿度下甲苯的吸附研究[J].日用化学工业（中英文）,2025,55(3):313-321,9.基金项目
江苏省绿色催化材料与技术重点实验室自主研究课题(ZZZD201803) （ZZZD201803）
江苏省重点研发计划(BE2018649) （BE2018649）
