التفاصيل البيبلوغرافية
| العنوان: |
Measurements and modeling of CO2 adsorption behaviors on granular zeolite 13X: Impact of temperature and time of calcination on granules properties in granulation process using organic binders. |
| المؤلفون: |
Aghaei, Mahsa, Anbia, Mansoor, Salehi, Samira |
| المصدر: |
Environmental Progress & Sustainable Energy; Sep2022, Vol. 41 Issue 5, p1-10, 10p |
| مصطلحات موضوعية: |
GRANULATION, CARBON dioxide adsorption, CALCINATION (Heat treatment), ENERGY dispersive X-ray spectroscopy, DIFFERENTIAL thermal analysis, ZEOLITES, ADSORPTION (Chemistry), ADSORPTION capacity |
| مستخلص: |
CO2 adsorption on granulated zeolite 13X by organic binders were studied by volumetric measurements. The goal of research was finding the optimum thermal conditions after shaping by organic binders to enhance the mechanical strength and adsorption capacity of granules. Previously published literature investigated the usage of traditional inorganic binders and the effect of organic binders has never been surveyed. Polyvinyl alcohol and polyethylene glycol were added to zeolite powder as organic binders and the effect of calcination temperature and calcination time on the physicochemical and mechanical properties of granules were studied. The textural/structural and morphological features of synthesized adsorbents were characterized by N2 isotherm, X‐ray diffraction (XRD), Thermogravimetric analysis (TGA), Differential thermal analysis (DTA), Scanning electron microscopy (SEM), and Energy Dispersive X‐ray spectroscopy (EDX). The results showed that using high temperatures and longer periods for the calcination had a favorable effect on their mechanical properties but their effects on the physical properties were negative. Thermodynamic investigations were employed to understand the adsorption behavior. Equilibrium adsorption demonstrated that Langmuir model was the most suitable model for description CO2 adsorption and the maximum adsorption capacity was 4.02 (mmol/g). The thermodynamic analysis indicated that the adsorption process was spontaneous and exothermic in nature. The value of isosteric heat of adsorption was analyzed based on Clausius–Clapeyron equation. [ABSTRACT FROM AUTHOR] |
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| قاعدة البيانات: |
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