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题名: Synthesis optimization of the ultra-microporous [Ni-3(HCOO)(6)] framework to improve its CH4/N-2 separation selectivity
作者: Ren, Xinyu1, 2;  Sun, Tianjun1;  Hu, Jiangliang1, 2;  Wang, Shudong1, 3
刊名: RSC ADVANCES
发表日期: 2014
DOI: 10.1039/c4ra05407e
卷: 4, 期:80, 页:42326-42336
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: Separation of methane and nitrogen is an important issue in upgrading low-quality natural gas, and non-cryogenic, adsorption-based separation of CH4/N-2 is particularly challenging. In this report, a metal-organic framework (MOF) adsorbent, namely a [Ni-3(HCOO)(6)] framework, is comprehensively investigated for the separation of CH4-N-2 mixture via pure gas adsorption and binary gas breakthrough experiments. All the prepared samples synthesized using different routes were also studied in detail by powder XRD, FT-IR, SEM, TGA/DSC and argon adsorption. The results show that the adsorptive separation performances can be improved significantly by optimizing the synthesis of the framework. The precursors play crucial roles in the crystallization of [Ni-3(HCOO)(6)] frameworks, giving rise to a variability in ultra-micropore volume, surface area and pore size. Good crystallization can result in large ultra-micropore volume and furthermore brings about high separation selectivity. The [Ni-3(HCOO)(6)] framework synthesized from nickel nitrate and methyl formate exhibits the best crystallization and the largest micropore volume, leading to the highest CH4/N-2 separation selectivity of up to 7.5 in the pressure range of 2.0-10 bar, which is the highest value reported for MOFs. Moreover, this adsorbent presents uniform nanosized crystals (similar to 140 nm), permanent porosity and consistent separation performances, making the [Ni-3(HCOO)(6)] framework a promising candidate for natural gas upgrading.
关键词[WOS]: METAL-ORGANIC FRAMEWORKS ;  CARBON-DIOXIDE CAPTURE ;  ADSORPTION SEPARATION ;  MESOPOROUS CARBON ;  ACTIVATED CARBON ;  MOLECULAR-SIEVE ;  CO2 ADSORPTION ;  N-2 ;  CH4 ;  NITROGEN
语种: 英语
WOS记录号: WOS:000342199000015
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/145607
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.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Dalian Inst Chem Phys, State Key Lab Catalysis, Dalian 116023, Peoples R China

Recommended Citation:
Ren, Xinyu,Sun, Tianjun,Hu, Jiangliang,et al. Synthesis optimization of the ultra-microporous [Ni-3(HCOO)(6)] framework to improve its CH4/N-2 separation selectivity[J]. RSC ADVANCES,2014,4(80):42326-42336.
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