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Water sorption performance measurement

XL X. Y. Liu
WW W. W. Wang
SX S. T. Xie
QP Q. W. Pan
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Dynamic water adsorption performance was tested in the constant temperature and humidity chamber (Binder KBF115, Germany). An analytical balance was adopted to weigh and record the real-time weight of the materials. Its draft shield guarantees the weighing accuracy. Meanwhile, the water adsorption isotherms of the composite adsorbents were obtained by the Micromeritics ASAP2020 Plus Surface Area and Porosity Analyzer. Its detailed compositions and measuring principle can be referred to Ref.35. Both dynamic and isothermal water uptake test include 2 processes: i.e., samples preparation and measurement. During the samples preparation process, the adsorbent samples are firstly heated in an oven at 120 °C for 4 h to discharge the remaining moisture. Then, the measurement process begins.

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