Journal of South China University of Technology (Natural Science Edition) ›› 2015, Vol. 43 ›› Issue (10): 140-146.doi: 10.3969/j.issn.1000-565X.2015.10.020

• Chemistry & Chemical Engineering • Previous Articles    

Synthesis and Water Vapor Adsorption Property of Hierarchically-Porous Aluminosilicates#br#

Wei Xiao-lan1  Liu Qiao1 Ding Jing2 Wang Wei-long2 Chen Hong-yin2 Yang Jian-ping1   

  1. 1． School of Chemistry and Chemical Engineering，South China University of Technology，Guangzhou 510640，Guangdong，
    China; 2． School of Engineering，Sun Yat-Sen University，Guangzhou 510275，Guangdong，China
  • Received:2014-11-07 Revised:2015-04-27 Online:2015-10-25 Published:2015-09-06
  • Contact: 魏小兰(1963-)，女，博士，副教授，主要从事多孔材料制备及功能研究． E-mail:xlwei@scut.edu.cn
  • About author:魏小兰(1963-)，女，博士，副教授，主要从事多孔材料制备及功能研究．
  • Supported by:
    Supported by the Joint Fund of the National Natural Science Foundation of China-Guangdong Province
    (U1034005) and the National Program on Key Basic Ｒesearch Project of China(973 Program)(2010CB227103)

PDF

72

Abstract: In order to meet the requirements of the efficient rotary desiccant technology，the aluminosilicate was
synthesized via the hydrothermal method，and the influence of the stirring time on the adsorbent properties was revealed． Then，the structure and morphology of the absorbent were characterized by using the N2 adsorption-desorption isotherm and by means of TEM，XPS，XRD and FT-IR，and the adsorption/desorption properties of the adsorbent on water vapor were determined by using a dynamic vapor sorption system (DVS-STD)． Experimental results show that，as the stirring time increases，the specific surface area，pore volume and surface Si/Al ratio of the adsorbent gradually increase，the average pore size gradually decreases，and the absorption property of the adsorbent on water vapor is improved，and that the adsorbent has a low desorption temperature of 360 K，and the absorption property of the aluminosilicate on water vapor is better than that of zeolite 3A at a low relative humidity (RH≤40 %)．

Key words: hierarchically-porous aluminosilicate, stirring time, water vapor, adsorption isotherms, desorption property