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题名: Expanding Pore Size of Al-BDC Metal-Organic Frameworks as a Way to Achieve High Adsorption Selectivity for CO2/CH4 Separation
作者: Sun, Tianjun1;  Ren, Xinyu1;  Hu, Jiangliang1;  Wang, Shudong1
刊名: JOURNAL OF PHYSICAL CHEMISTRY C
发表日期: 2014-07-24
DOI: 10.1021/jp411536d
卷: 118, 期:29, 页:15630-15639
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Physical Sciences ;  Technology
类目[WOS]: Chemistry, Physical ;  Nanoscience & Nanotechnology ;  Materials Science, Multidisciplinary
研究领域[WOS]: Chemistry ;  Science & Technology - Other Topics ;  Materials Science
英文摘要: The mesostructured Al-BDC metal-organic frameworks (MOFs) with an average pore size of 2.58 rim were prepared via a simplified washing and drying process and applied to the separation of CO2/CH4 mixtures. The adsorption equilibrium and thermodynamics of CH, and CO, were studied in the dynamic processes by the volumetric-chromatographic and inverse gas chromatographic (IGC) methods. The experiments represent that the Al-BDC MOF with large pore size has a much higher CO2/CH4, selectivity of ca. 24 at 303 K in the pressure range 0-1.0 MPa and therefore appears to be a good candidate for the separation of CH, from CO,. The initial heats of adsorption of CH, and CO, on the mesostructured Al-BDC MOFs were determined to be 11.5 and 25.2 kJ mol(-1) by the IGC method, respectively, which are significantly reduced by ca. 2596 compared with that on the microporous Al-BDC MOFs. The results indicate that the expanded pore size not only greatly increases the selectivity of CO, adsorption over CH, but also reduces the adsorption heat, revealing that it should be the desired method to obtain a satisfactory absorbent for CO2/CH4 separation.
关键词[WOS]: INVERSE GAS-CHROMATOGRAPHY ;  CARBON-DIOXIDE ;  MIXTURE ADSORPTION ;  ACTIVATED CARBONS ;  MOLECULAR-SIEVES ;  NATURAL-GAS ;  CO2 CAPTURE ;  METHANE ;  CH4 ;  PRESSURES
语种: 英语
WOS记录号: WOS:000339540700010
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145459
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, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Sun, Tianjun,Ren, Xinyu,Hu, Jiangliang,et al. Expanding Pore Size of Al-BDC Metal-Organic Frameworks as a Way to Achieve High Adsorption Selectivity for CO2/CH4 Separation[J]. JOURNAL OF PHYSICAL CHEMISTRY C,2014,118(29):15630-15639.
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