DICP OpenIR
Economical synthesis strategy of RHO zeolites with fine-tuned composition and porosity for enhanced trace CO2 capture
Ke, Quanli1,2; Sun, Tianjun1; Wei, Xiaoli1,2; Guo, Ya1,2; Xu, Shutao1; Wang, Shudong1
Corresponding AuthorSun, Tianjun(suntianjun@dicp.ac.cn) ; Xu, Shutao(xushutao@dicp.ac.cn) ; Wang, Shudong(wangsd@dicp.ac.cn)
KeywordSilica content control Alkali metal cations Crown ether Carbon dioxide capture Zeolites
Source PublicationCHEMICAL ENGINEERING JOURNAL
2019-03-01
ISSN1385-8947
DOI10.1016/j.cej.2018.11.098
Volume359Pages:344-353
Funding ProjectNational Natural Science Foundation of China[21776266] ; National Natural Science Foundation of China[21476231]
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS SubjectEngineering, Environmental ; Engineering, Chemical
WOS Research AreaEngineering
WOS KeywordCARBON-DIOXIDE CAPTURE ; 18-CROWN-6 ETHER ; ADSORPTION ; CS-133 ; NMR ; NA-23 ; SEPARATION ; CHEMISTRY ; CATIONS ; CESIUM
AbstractDelicate modification of the silica contents and porous structures within RHO zeolites has been readily realized by adopting a variety of alkali metal-crown ether (AMCE) complexes as the templates. Compared to the previous protocols, up to 70% of the Cs+ cations could be substituted by much cheaper K+ cations and thus the synthesis costs of RHO zeolites could be impressively reduced. The subsequent Cs-133 and Na-23 MAS NMR spectra further reveal that the Cs+ cations may aggregate with crown ether in a form of monomer or dimer complex, which then plays a significant role in the structural direction of RHO zeolites, whereas the hydrated Na+ cations mainly serve as the charge balancing cations. Meanwhile, the addition of different amount of K+ cation could result in varying degrees of template-framework interaction and consequently generates RHO zeolites with diverse compositions. Finally, the proton-type RHO zeolites were applied to the adsorptive separation of CO2/CH4/N-2 mixture. Therein, the medium-silica ones achieve fine trade-off for the adsorption capacity, selectivity and heat even under ultralow CO2 concentration, which makes them potential candidates for trace CO2 capture.
Language英语
Funding OrganizationNational Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China ; National Natural Science Foundation of China
WOS IDWOS:000454137400034
PublisherELSEVIER SCIENCE SA
Citation statistics
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/166337
Collection中国科学院大连化学物理研究所
Corresponding AuthorSun, Tianjun; Xu, Shutao; Wang, Shudong
Affiliation1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Ke, Quanli,Sun, Tianjun,Wei, Xiaoli,et al. Economical synthesis strategy of RHO zeolites with fine-tuned composition and porosity for enhanced trace CO2 capture[J]. CHEMICAL ENGINEERING JOURNAL,2019,359:344-353.
APA Ke, Quanli,Sun, Tianjun,Wei, Xiaoli,Guo, Ya,Xu, Shutao,&Wang, Shudong.(2019).Economical synthesis strategy of RHO zeolites with fine-tuned composition and porosity for enhanced trace CO2 capture.CHEMICAL ENGINEERING JOURNAL,359,344-353.
MLA Ke, Quanli,et al."Economical synthesis strategy of RHO zeolites with fine-tuned composition and porosity for enhanced trace CO2 capture".CHEMICAL ENGINEERING JOURNAL 359(2019):344-353.
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