HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.
The specific heat capacity (Cp) of zeolite 4A and zeolite 13X was measured using a new methodology performed on a thermogravimetry and differential scanning calorimetry (DSC) coupled device. Experiments were performed at various water contents in the temperature range from [343 to 363 K] and at atmospheric pressure. The experimental procedure is based on a "classic" temperature ramp. The experimental improvement is based on the control of the water content in the sample during the acquisition by adjusting the atmospheric humidity of the gas flow. The new methodology implies the correction of the DSC signal by subtracting the contribution of the reaction heat for the calculation of the Cp. A linear relationship is used to model the Cp as a function of water content. For a water content ranging from 0 to 0.20 kg•kg −1 , the Cp value was in the [897 to 1542 J•kg −1 •K −1 ] range for zeolite 4A and in the [943 to 1344 J•kg −1 •K −1 ] range for the zeolite 13X. These results show that the Cp values of the dry materials are approximately the same, unlike those of the adsorbed water (4120 and 2948 J•kg −1 •K −1 , respectively).
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