DICP OpenIR
Rational Synthesis of Chabazite (CHA) Zeolites with Controlled Si/Al Ratio and Their CO2/CH4/N-2 Adsorptive Separation Performances
Guo, Ya1,2; Sun, Tianjun1; Gu, Yiming1,2; Liu, Xiaowei1,2; Ke, Quanli1,2; Wei, Xiaoli1,2; Wang, Shudong1
Corresponding AuthorSun, Tianjun(suntianjun@dicp.ac.cn) ; Wang, Shudong(wangsd@dicp.ac.cn)
Keywordadsorption adsorptive separation N,N,N-trimethyl-1-adamantammonium hydroxide Si/Al ratio zeolites
Source PublicationCHEMISTRY-AN ASIAN JOURNAL
2018-11-02
ISSN1861-4728
DOI10.1002/asia.201800930
Volume13Issue:21Pages:3222-3230
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 SubjectChemistry, Multidisciplinary
WOS Research AreaChemistry
WOS KeywordCARBON-DIOXIDE ADSORPTION ; STRUCTURE-DIRECTING AGENTS ; PRESSURE SWING ADSORPTION ; CO2 ADSORPTION ; FLUE-GAS ; CAPTURE ; SSZ-13 ; N-2 ; FRAMEWORKS ; MEMBRANES
AbstractSeparation of CO2 from CH4 and N-2 is of great significance from the perspectives of energy production and environment protection. In this work, we report the rational synthesis of chabazite (CHA) zeolites with controlled Si/Al ratio by using N,N,N-trimethyl-1-adamantammonium hydroxide (TMAdaOH) as an organic structure-directing agent, wherein the dependence of TMAdaOH consumption on the initial Si/Al ratio was investigated systematically. More TMAdaOH is required to direct the crystallization of CHA with higher Si/Al ratio. Once the product Si/Al ratio is larger than 24, the amount of TMAdaOH consumption remains nearly constant. CHA zeolites with different Si/Al ratios and charge-compensating cations were then applied for the separation of CO2/CH4/N-2 mixtures. The equilibrium selectivities predicted by ideal adsorbed solution theory (IAST) and ideal selectivities calculated from the ratio of Henry's constants for both CO2/CH4 and CO2/N-2 decrease with the zeolite Si/Al ratio increasing, whereas the percentage regenerability of CO2 presents the opposite trend. Therefore, there is a trade-off between adsorption selectivity and regenerability for the adsorbents. There is a weaker interaction between CO2 molecules and the H-type zeolites than that on the Na-type ones, thus a higher regenerability can be achieved. This study indicates that it is possible to design CHA zeolites with different physicochemical properties to meet various adsorptive separation requirements.
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:000449792900016
PublisherWILEY-V C H VERLAG GMBH
Citation statistics
Cited Times:3[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://cas-ir.dicp.ac.cn/handle/321008/166651
Collection中国科学院大连化学物理研究所
Corresponding AuthorSun, Tianjun; Wang, Shudong
Affiliation1.Chinese Acad Sci, Dalian Natl Lab Clean Energy, Dalian Inst Chem Phys, 457 Zhongshan Rd, Dalian 116023, Peoples R China
2.Univ Chinese Acad Sci, 19A Yuquan Rd, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Guo, Ya,Sun, Tianjun,Gu, Yiming,et al. Rational Synthesis of Chabazite (CHA) Zeolites with Controlled Si/Al Ratio and Their CO2/CH4/N-2 Adsorptive Separation Performances[J]. CHEMISTRY-AN ASIAN JOURNAL,2018,13(21):3222-3230.
APA Guo, Ya.,Sun, Tianjun.,Gu, Yiming.,Liu, Xiaowei.,Ke, Quanli.,...&Wang, Shudong.(2018).Rational Synthesis of Chabazite (CHA) Zeolites with Controlled Si/Al Ratio and Their CO2/CH4/N-2 Adsorptive Separation Performances.CHEMISTRY-AN ASIAN JOURNAL,13(21),3222-3230.
MLA Guo, Ya,et al."Rational Synthesis of Chabazite (CHA) Zeolites with Controlled Si/Al Ratio and Their CO2/CH4/N-2 Adsorptive Separation Performances".CHEMISTRY-AN ASIAN JOURNAL 13.21(2018):3222-3230.
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