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Adsorption–desorption of CO₂ on zeolite-Y-templated carbon at various temperatures

Author:
Gunawan, Triyanda, Wijiyanti, Rika, Widiastuti, Nurul
Source:
RSC advances 2018 v.8 no.72 pp. 41594-41602
ISSN:
2046-2069
Subject:
adsorption, carbon, carbon dioxide, carbonization, gravimetry, sucrose, temperature, thermodynamics
Abstract:
This study aims to investigate the adsorption–desorption of CO₂ on a micro-mesoporous zeolite-Y-templated carbon (ZTC) at various temperatures. ZTC was synthesized via sucrose impregnation, carbonization, and template removal. The adsorption–desorption of CO₂ on ZTC was performed using the gravimetric method. Results showed that the CO₂ adsorption capacity was 9.51 wt%, 5.60 wt%, and 3.47 wt%, and desorbed up to 59.83%, 69.70%, 77.5% for temperatures of 30 °C, 40 °C, and 50 °C, respectively. The adsorption process of CO₂ at temperatures of 30 °C and 40 °C follow the pseudo-second order, while at 50 °C follows intra-particle diffusion. The thermodynamic analyses indicate that the adsorption was due to physisorption.
Agid:
6261556