Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption

Carbon dioxide (CO2) emission is among the causes of global warming. CO2 capture by CO2 adsorption has been one of the methods to reduce CO2 emission. Moreover, an adsorbent with high efficiency is needed for high-temperature CO2 capture from industrial hybrid processes. Sodium zirconate (Na2Z...

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Main Author:	Ooi, Khim May
Format:	Thesis
Language:	English
Published:	2015
Subjects:	T Technology TP155-156 Chemical engineering
Online Access:	http://eprints.usm.my/46761/1/Effects%20Of%20Synthesis%20Methods%20And%20Parameters%20On%20Sodium%20Zirconate%20For%20High-Temperature%20Co2%20Sorption.pdf
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spelling	my-usm-ep.467612021-11-17T03:42:19Z Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption 2015-10-01 Ooi, Khim May T Technology TP155-156 Chemical engineering Carbon dioxide (CO2) emission is among the causes of global warming. CO2 capture by CO2 adsorption has been one of the methods to reduce CO2 emission. Moreover, an adsorbent with high efficiency is needed for high-temperature CO2 capture from industrial hybrid processes. Sodium zirconate (Na2ZrO3) is one of the potential solid sorbents with high and stable cyclic CO2 sorption performance, but CO2 adsorption capacity closer to its ideal capacity is still desired. Furthermore, the effects of different methodologies on its CO2 capture performance were not reported previously. The main aim of this research work is to improve the synthesis and thus CO2 capture capacity of Na2ZrO3 for high-temperature CO2 sorption. Effects of carbonation and calcination conditions, different sodium (Na) precursors, and addition of citric acid (CA) and ethylene glycol (EG) on high-temperature CO2 sorption performance of synthesised Na2ZrO3 were investigated. Characterisation and CO2 sorption performance of samples were tested using thermogravimetric analysis, X-ray diffraction, N2 adsorption and SEM. All the above-mentioned parameters significantly affect the CO2 adsorption performances of the prepared Na2ZrO3 sorbents. The use of different Na precursor and CO2 adsorption temperature influenced the CO2 adsorption capacity of the samples. Different calcination conditions also affected the purity of Na2ZrO3. Addition of CA and EG resulted in producing purer Na2ZrO3 with more porous morphology and hence better regeneration stability than the sample prepared without the addition of CA and EG. The best CO2 adsorption capacity of 4.902 mmol CO2/g Na2ZrO3 was achieved at carbonation temperature of 550 °C, for the sample synthesised with sodium citrate as the Na precursor and CA:EG molar ratio of 2:1, and calcined at 900 °C for 4 h. Hence, this sorbent is suitable for high-temperature CO2 capture. It is recommended to test the functionality of this improved Na2ZrO3 sorbent under industrial conditions. 2015-10 Thesis http://eprints.usm.my/46761/ http://eprints.usm.my/46761/1/Effects%20Of%20Synthesis%20Methods%20And%20Parameters%20On%20Sodium%20Zirconate%20For%20High-Temperature%20Co2%20Sorption.pdf application/pdf en public masters Universiti Sains Malaysia Pusat Pengajian Kejuruteraan Kimia
institution	Universiti Sains Malaysia
collection	USM Institutional Repository
language	English
topic	T Technology TP155-156 Chemical engineering
spellingShingle	T Technology TP155-156 Chemical engineering Ooi, Khim May Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption
description	Carbon dioxide (CO2) emission is among the causes of global warming. CO2 capture by CO2 adsorption has been one of the methods to reduce CO2 emission. Moreover, an adsorbent with high efficiency is needed for high-temperature CO2 capture from industrial hybrid processes. Sodium zirconate (Na2ZrO3) is one of the potential solid sorbents with high and stable cyclic CO2 sorption performance, but CO2 adsorption capacity closer to its ideal capacity is still desired. Furthermore, the effects of different methodologies on its CO2 capture performance were not reported previously. The main aim of this research work is to improve the synthesis and thus CO2 capture capacity of Na2ZrO3 for high-temperature CO2 sorption. Effects of carbonation and calcination conditions, different sodium (Na) precursors, and addition of citric acid (CA) and ethylene glycol (EG) on high-temperature CO2 sorption performance of synthesised Na2ZrO3 were investigated. Characterisation and CO2 sorption performance of samples were tested using thermogravimetric analysis, X-ray diffraction, N2 adsorption and SEM. All the above-mentioned parameters significantly affect the CO2 adsorption performances of the prepared Na2ZrO3 sorbents. The use of different Na precursor and CO2 adsorption temperature influenced the CO2 adsorption capacity of the samples. Different calcination conditions also affected the purity of Na2ZrO3. Addition of CA and EG resulted in producing purer Na2ZrO3 with more porous morphology and hence better regeneration stability than the sample prepared without the addition of CA and EG. The best CO2 adsorption capacity of 4.902 mmol CO2/g Na2ZrO3 was achieved at carbonation temperature of 550 °C, for the sample synthesised with sodium citrate as the Na precursor and CA:EG molar ratio of 2:1, and calcined at 900 °C for 4 h. Hence, this sorbent is suitable for high-temperature CO2 capture. It is recommended to test the functionality of this improved Na2ZrO3 sorbent under industrial conditions.
format	Thesis
qualification_level	Master's degree
author	Ooi, Khim May
author_facet	Ooi, Khim May
author_sort	Ooi, Khim May
title	Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption
title_short	Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption
title_full	Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption
title_fullStr	Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption
title_full_unstemmed	Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption
title_sort	effects of synthesis methods and parameters on sodium zirconate for high-temperature co2 sorption
granting_institution	Universiti Sains Malaysia
granting_department	Pusat Pengajian Kejuruteraan Kimia
publishDate	2015
url	http://eprints.usm.my/46761/1/Effects%20Of%20Synthesis%20Methods%20And%20Parameters%20On%20Sodium%20Zirconate%20For%20High-Temperature%20Co2%20Sorption.pdf
_version_	1747821724097839104

Effects Of Synthesis Methods And Parameters On Sodium Zirconate For High-Temperature Co2 Sorption

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