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题名: Synthesis of DNL-6 with a High Concentration of Si(4Al) Environments and its Application in CO2 Separation
作者: Su, Xiong1, 2;  Tian, Peng1;  Fan, Dong1, 2;  Xia, Qinghua3;  Yang, Yue1;  Xu, Shutao1;  Zhang, Lin1;  Zhang, Ying1;  Wang, Dehua1, 2;  Liu, Zhongmin1
关键词: adsorption ;  aluminosilicates ;  carbon dioxide separation ;  regeneration ;  zeolites
刊名: CHEMSUSCHEM
发表日期: 2013-05-01
DOI: 10.1002/cssc.201200907
卷: 6, 期:5, 页:911-918
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences
类目[WOS]: Chemistry, Multidisciplinary
研究领域[WOS]: Chemistry
英文摘要: The synthesis of DNL-6 with a high concentration of Si(4Al) environments [Si/(Si+Al+P)=0.182mol, denoted as M-DNL-6] is demonstrated. This represents the highest reported concentration of such environments in silicoaluminophosphate (SAPO) molecular sieves. Adsorption studies show that the high Si(4Al) content in M-DNL-6, with an increased number of BrOnsted acid sites in the framework, greatly promotes the adsorption of CO2. M-DNL-6 exhibits a large CO2 uptake capacity of up to 6.18mmolg1 at 273K and 101kPa, and demonstrates high ratios of CO2/CH4 and CO2/N2 separation. From breakthrough and cycling experiments, M-DNL-6 demonstrates the ability to completely separate CO2 from CH4 or N2 with a dynamic capacity of approximately 8.0wt% before breakthrough. Importantly, the adsorbed CO2 is easily released from the adsorbent through a simple gas purging operation at room temperature to regain 95% of the original adsorption capacity. These results suggest that M-DNL-6 can be used as a potential adsorbent for CO2 capture in pressure swing adsorption processes.
关键词[WOS]: METAL-ORGANIC FRAMEWORK ;  CARBON-DIOXIDE ADSORPTION ;  MONTE-CARLO SIMULATIONS ;  CO2/CH4 SEPARATION ;  MOLECULAR-SIEVE ;  MICROCALORIMETRY MEASUREMENTS ;  SAPO-34 MEMBRANES ;  SI DISTRIBUTION ;  ZEOLITE RHO ;  TEMPLATE
语种: 英语
WOS记录号: WOS:000318356000021
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/137917
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian Natl Lab Clean Energy, Dalian 116023, Peoples R China
2.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China
3.Hubei Univ, Sch Chem & Chem Engn, Minist Educ, Key Lab Synth & Applicat Organ Funct Mol, Wuhan 430062, Peoples R China

Recommended Citation:
Su, Xiong,Tian, Peng,Fan, Dong,et al. Synthesis of DNL-6 with a High Concentration of Si(4Al) Environments and its Application in CO2 Separation[J]. CHEMSUSCHEM,2013,6(5):911-918.
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