Nanoscale MOF/organosilica membranes on tubular ceramic substrates for highly selective gas separation,Energy & Environmental Science

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Nanoscale MOF/organosilica membranes on tubular ceramic substrates for highly selective gas separation
Energy & Environmental Science ( IF 32.4 ) Pub Date : 2017-07-07 00:00:00 , DOI: 10.1039/c7ee00830a
Chunlong Kong _{1,

2,

3,

4} , Hongbing Du _{1,

2,

3,

4} , Liang Chen _{1,

2,

3,

4} , Banglin Chen _{4,

5,

6,

7,

8}

Affiliation

In this study, we present a general and efficient strategy to design and prepare novel MOF-based hybrid membranes on a tubular ceramic substrate. Thin and compact MOF/organosilica nano-composite membranes can be rationally formed and tightly bound with the tubular ceramic substrate. The resulting membranes display high gas separation performance with both high selectivity and high permeation rate, which can be well correlated to the parent MOFs. The as-prepared ZIF-8 and MIL-53-NH₂ incorporated organosilica nanocomposite membranes have been demonstrated as some of the best performing MOF-based membranes for highly H₂- (H₂/CH₄ selectivity = 26.5, H₂ permeance = 1.06 × 10⁻⁶ mol m⁻² s⁻¹ Pa⁻¹) and CO₂-selective (CO₂/CH₄ selectively = 18.2, CO₂ permeance = 1.44 × 10⁻⁷ mol m⁻² s⁻¹ Pa⁻¹) separations, for H₂/CH₄ (1

1) and CO₂/CH₄ (1

1) mixtures at room temperature, respectively.

中文翻译：

管状陶瓷基板上的纳米级MOF /有机硅膜用于高度选择性的气体分离

在这项研究中，我们提出了在管状陶瓷基板上设计和制备新型基于MOF的混合膜的通用有效策略。可以合理地形成薄而紧凑的MOF /有机硅纳米复合膜，并与管状陶瓷基底紧密结合。所得的膜显示出高的气体分离性能，同时具有高的选择性和高的渗透率，这可以与母体MOF很好地关联。制备的掺入ZIF-8和MIL-53-NH _2的有机硅纳米复合膜已被证明是对H _2-（H ₂ / CH ₄选择性= 26.5，H ₂磁导率= 1.06×10 ^-6摩尔m对于H₂ /，分离度为^-2 s^-1 Pa^-1）和选择性的CO₂（选择性地选择CO₂ / CH₄ = 18.2，CO₂渗透率= 1.44×10^-7 mol m^-2 s^-1 Pa^-1）。室温下分别为CH₄（1：1）和CO₂ / CH₄（1：1）混合物。

更新日期：2017-08-09

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