Rational Synthesis of Chabazite (CHA) Zeolites with Controlled Si/Al Ratio and Their CO2/CH4/N-2 Adsorptive Separation Performances
文献类型：期刊论文
| 作者 | 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
 |
| 出版日期 | 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 |
| 资助项目 | National Natural Science Foundation of China[21776266] ; National Natural Science Foundation of China[21476231] |
| WOS研究方向 | Chemistry |
| 语种 | 英语 |
| WOS记录号 | WOS:000449792900016 |
| 出版者 | WILEY-V C H VERLAG GMBH |
| 资助机构 | 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 ; National Natural Science Foundation of China |
| 源URL | [http://cas-ir.dicp.ac.cn/handle/321008/166650]  |
| 专题 | 大连化学物理研究所_中国科学院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. |
入库方式： OAI收割
来源：大连化学物理研究所
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