Perrier L, Plantier F, Grégoire D
University Pau & Pays Adour, Laboratoire des Fluides Complexes et leurs Réservoirs, LFCR-IPRA, UMR5150, 64600 Anglet, France.
Rev Sci Instrum. 2017 Mar;88(3):035104. doi: 10.1063/1.4977595.
A new experimental setup is presented allowing the simultaneous measurement of adsorption isotherms and adsorption-induced deformations. It is composed of a manometric technique coupled with a digital image correlation setup for full-field displacement measurements. The manometric part is validated by comparing adsorption isotherms with those obtained by a gravimetric method. The principles and methods of both adsorption isotherm and induced deformation measurements are presented in detail. As a first application of this new apparatus, the coupling between adsorption and induced deformation is characterised for a microporous media (activated carbon) saturated by pure CO (318.15 K, [0-60] bars) and pure CH (303.15 K, [0-130] bars). For this very homogeneous porous material, the induced deformation is characteristic of a pure volumetric swelling but the full-field setup may allow the characterisation of the localised pattern of deformation for heterogenous or cracked microporous media.
本文介绍了一种新的实验装置，该装置能够同时测量吸附等温线和吸附诱导变形。它由压力测量技术与用于全场位移测量的数字图像相关装置组成。通过将吸附等温线与重量法获得的等温线进行比较，对压力测量部分进行了验证。详细介绍了吸附等温线测量和诱导变形测量的原理及方法。作为这种新装置的首次应用，对被纯CO（318.15 K，[0 - 60]巴）和纯CH（303.15 K，[0 - 130]巴）饱和的微孔介质（活性炭）的吸附与诱导变形之间的耦合特性进行了表征。对于这种非常均匀的多孔材料，诱导变形是纯体积膨胀的特征，但全场装置可能允许对非均质或破裂的微孔介质的局部变形模式进行表征。
