Adsorption characteristics and thermodynamic property fields of polymerized ionic liquid and polyvinyl alcohol based composite/CO2 pairs

Kaiser Ahmed Rocky; Animesh Pal; Muhammad Moniruzzaman; Bidyut Baran Saha

doi:10.1016/j.molliq.2019.111555

Adsorption characteristics and thermodynamic property fields of polymerized ionic liquid and polyvinyl alcohol based composite/CO₂ pairs

Kaiser Ahmed Rocky, Animesh Pal, Muhammad Moniruzzaman, Bidyut Baran Saha

Research output: Contribution to journal › Article › peer-review

32 Citations (Scopus)

Abstract

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.

Original language	English
Article number	111555
Journal	Journal of Molecular Liquids
Volume	294
DOIs	https://doi.org/10.1016/j.molliq.2019.111555
Publication status	Published - Nov 15 2019

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Spectroscopy
Physical and Theoretical Chemistry
Materials Chemistry

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title = "Adsorption characteristics and thermodynamic property fields of polymerized ionic liquid and polyvinyl alcohol based composite/CO2 pairs",

abstract = "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, T{\'o}th, 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.",

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AU - Pal, Animesh

AU - Moniruzzaman, Muhammad

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PY - 2019/11/15

Y1 - 2019/11/15

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AB - 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.

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Adsorption characteristics and thermodynamic property fields of polymerized ionic liquid and polyvinyl alcohol based composite/CO₂ pairs

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