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	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
刊名	Chemistry-an asian journal
	2018-11-02
卷号	13期号:21页码:3222-3230
关键词	Adsorption Adsorptive separation N,n,n-trimethyl-1-adamantammonium hydroxide Si/al ratio Zeolites
ISSN号	1861-4728
DOI	10.1002/asia.201800930
通讯作者	Sun, tianjun(suntianjun@dicp.ac.cn) ; Wang, shudong(wangsd@dicp.ac.cn)
英文摘要	Separation 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.
WOS关键词	CARBON-DIOXIDE ADSORPTION ; STRUCTURE-DIRECTING AGENTS ; PRESSURE SWING ADSORPTION ; CO2 ADSORPTION ; FLUE-GAS ; CAPTURE ; SSZ-13 ; N-2 ; FRAMEWORKS ; MEMBRANES
WOS研究方向	Chemistry
WOS类目	Chemistry, Multidisciplinary
语种	英语
出版者	WILEY-V C H VERLAG GMBH
WOS记录号	WOS:000449792900016
内容类型	期刊论文
URI标识	http://www.corc.org.cn/handle/1471x/2373081
专题	大连化学物理研究所
通讯作者	Sun, Tianjun; Wang, Shudong
作者单位	1.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
推荐引用方式 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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