Consolidated composites are strongly considered as promising adsorbents for adsorption cooling system (ACS) applications. Binder plays a vital role to synthesize consolidated composite. In this study, consolidated composites are synthesized employing highly porous activated carbon (AC) namely Maxsorb III and two types of binders: (i) polymerized ionic liquid (PIL) and (ii) polyvinyl alcohol (PVA) for the development of compact CO2 based ACS. Adsorption characteristics of composite/CO2 pairs are studied at temperature ranging from 20 to 70 °C and pressure up to 7000 kPa. Experimental adsorption uptake data are fitted with Langmuir, Tóth, Dubinin-Astakhov (D-A) and modified D-A equations. It is observed that composite employing 90 wt% Maxsorb III and 10 wt% PIL shows maximum CO2 adsorption uptake of 1.41146 cm3 g−1, whilst composite incorporating 90 wt% Maxsorb III and 10 wt% PVA can adsorb up to 1.31311 cm3 g−1. Besides, the adsorption/desorption kinetics and thermodynamic properties such as isosteric heat of adsorption, specific heat capacity, entropy and enthalpy, which are very crucial for ACS design, are rigorously analyzed here.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials
- Atomic and Molecular Physics, and Optics
- Condensed Matter Physics
- Physical and Theoretical Chemistry
- Materials Chemistry