化工学报2016，Vol.67Issue(7)：2864-2873,10.DOI:10.11949/j.issn.0438-1157.20151792
多级孔硅铝酸盐的结构特性及其除湿性能
Structural property and dehumidification performance of hierarchically porous aluminosilicates
摘要
Abstract
Hierarchically porous aluminosilicate with high adsorption capacity and fast desorption kinetics was synthesized via hydrothermal method. Samples under different pre-crystallization temperature were synthesized. It was revealed that the excellent performance of adsorbents was attributed to its unusual pore texture. The adsorbents were characterized by N2 physisorption, XRD, TEM, FT-IR and NMR. The water vapor adsorption-desorption isotherms were measured on a dynamic vapor sorption system (DVS). The results of characterization showed that the adsorbent framework consisted of ordered mesoporous with microporous-like pits. As the pre-crystallization temperature raised, the proportion of microporous-like pits increased and the deep dehumidification performance was improved as more Al substituted in the framework. However, the amount of ordered mesopore and total pore volume decreased, leading to lower saturated adsorption capacity and water-desorbed percent. The hierarchically porous aluminosilicate showed its advantages for rotary dehumidifiers with deep dehumidification performance (relative humidification, RH = 15%, 200 mg·g−1), high saturated adsorption capacity (RH = 40%, 400 mg·g−1) and fast desorption kinetics under low desorption temperature (87℃).关键词
硅铝酸盐/吸附剂/合成/多孔介质/微晶温度/除湿性能Key words
aluminosilicates/adsorbents/synthesis/porous media/pre-crystallization temperature/dehumidification performance分类
化学化工引用本文复制引用
刘侨,魏小兰,丁静,王维龙,黄翔,杨建平..多级孔硅铝酸盐的结构特性及其除湿性能[J].化工学报,2016,67(7):2864-2873,10.基金项目
国家自然科学基金（NSFC）-广东省人民政府联合基金项目（U1034005）。@@@@supported by the National Natural Science Foundation of China (U1034005) （U1034005）
