Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide capture
The porous material adsorbent X zeolite was prepared by using agricultural waste rice hull ash (RHA) and modified by ion-exchange into the rare earth metal zeolite of La and Ce. A series of characterization results, including X-ray diffraction, Fourier transform infrared spectroscopy, scanning elect...
Main Authors: | , , , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Elsevier
2020-05-01
|
Series: | Journal of Materials Research and Technology |
Subjects: | |
Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785419319441 |
id |
doaj-f626e6d47f954c099f0b870d808d234d |
---|---|
record_format |
Article |
spelling |
doaj-f626e6d47f954c099f0b870d808d234d2020-11-25T04:00:33ZengElsevierJournal of Materials Research and Technology2238-78542020-05-019343684378Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide captureYisong Wang0He Jia1Peng Chen2Xin Fang3Tao Du4State Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, Shenyang 110819, ChinaState Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, Shenyang 110819, ChinaState Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, Shenyang 110819, ChinaState Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, Shenyang 110819, ChinaCorresponding author.; State Environmental Protection Key Laboratory of Eco-Industry, Northeastern University, Shenyang 110819, ChinaThe porous material adsorbent X zeolite was prepared by using agricultural waste rice hull ash (RHA) and modified by ion-exchange into the rare earth metal zeolite of La and Ce. A series of characterization results, including X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, N2 adsorption–desorption and pore size analysis, illustrated the effects of ion exchange modification on crystal, pore structure and morphology. The CO2 adsorption experiment was operated, and the adsorption amount of NaX and LaLiX was 6.14 and 4.36 mmol/g at atmospheric pressure, respectively. Three isotherm models were used to fit the pressure swing adsorption data. The Toth and DSL models were more accurate due to their ability to express heterogeneity. The isosteric heat and selectivity were obtained by the corresponding models and calculations. The results explained the mechanism of heat and gas uptake during adsorption and desorption. The CO2/N2 selectivity of LaNaX has enhanced more than three times. All modified zeolite samples maintained above 96.5% of initial adsorption after 20 adsorption–desorption cycles. The adsorption heat releases properties and long-term stability of the modified zeolite are superior. It demonstrates that such adsorbents can be used for long-term capture and separation of CO2 from the industrial exhaust gas.http://www.sciencedirect.com/science/article/pii/S2238785419319441ZeoliteRice husk ashCation modifiedAdsorbentsCO2 adsorption |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Yisong Wang He Jia Peng Chen Xin Fang Tao Du |
spellingShingle |
Yisong Wang He Jia Peng Chen Xin Fang Tao Du Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide capture Journal of Materials Research and Technology Zeolite Rice husk ash Cation modified Adsorbents CO2 adsorption |
author_facet |
Yisong Wang He Jia Peng Chen Xin Fang Tao Du |
author_sort |
Yisong Wang |
title |
Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide capture |
title_short |
Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide capture |
title_full |
Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide capture |
title_fullStr |
Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide capture |
title_full_unstemmed |
Synthesis of La and Ce modified X zeolite from rice husk ash for carbon dioxide capture |
title_sort |
synthesis of la and ce modified x zeolite from rice husk ash for carbon dioxide capture |
publisher |
Elsevier |
series |
Journal of Materials Research and Technology |
issn |
2238-7854 |
publishDate |
2020-05-01 |
description |
The porous material adsorbent X zeolite was prepared by using agricultural waste rice hull ash (RHA) and modified by ion-exchange into the rare earth metal zeolite of La and Ce. A series of characterization results, including X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy, N2 adsorption–desorption and pore size analysis, illustrated the effects of ion exchange modification on crystal, pore structure and morphology. The CO2 adsorption experiment was operated, and the adsorption amount of NaX and LaLiX was 6.14 and 4.36 mmol/g at atmospheric pressure, respectively. Three isotherm models were used to fit the pressure swing adsorption data. The Toth and DSL models were more accurate due to their ability to express heterogeneity. The isosteric heat and selectivity were obtained by the corresponding models and calculations. The results explained the mechanism of heat and gas uptake during adsorption and desorption. The CO2/N2 selectivity of LaNaX has enhanced more than three times. All modified zeolite samples maintained above 96.5% of initial adsorption after 20 adsorption–desorption cycles. The adsorption heat releases properties and long-term stability of the modified zeolite are superior. It demonstrates that such adsorbents can be used for long-term capture and separation of CO2 from the industrial exhaust gas. |
topic |
Zeolite Rice husk ash Cation modified Adsorbents CO2 adsorption |
url |
http://www.sciencedirect.com/science/article/pii/S2238785419319441 |
work_keys_str_mv |
AT yisongwang synthesisoflaandcemodifiedxzeolitefromricehuskashforcarbondioxidecapture AT hejia synthesisoflaandcemodifiedxzeolitefromricehuskashforcarbondioxidecapture AT pengchen synthesisoflaandcemodifiedxzeolitefromricehuskashforcarbondioxidecapture AT xinfang synthesisoflaandcemodifiedxzeolitefromricehuskashforcarbondioxidecapture AT taodu synthesisoflaandcemodifiedxzeolitefromricehuskashforcarbondioxidecapture |
_version_ |
1724449809021009920 |