High performance gas adsorption and separation of natural gas in two microporous metal–organic frameworks with ternary building units
作者:Dongmei Wang、Tingting Zhao、Yu Cao、Shuo Yao、Guanghua Li、Qisheng Huo、Yunling Liu
DOI:10.1039/c4cc03729d
日期:——
Two novel MMOFs, JLU-Liu5 and JLU-Liu6, are based on ternary buildingunits and exhibit high adsorption selectivity for CO2, C2H6 and C3H8 over CH4, which is attributed to steric effects and host-guest interactions. These MMOFs are promising materials for gas adsorption and natural gas purification.
A new microporous metal–organic framework with open metal sites and exposed carboxylic acid groups for selective separation of CO<sub>2</sub>/CH<sub>4</sub>and C<sub>2</sub>H<sub>2</sub>/CH<sub>4</sub>
A new microporous metal–organic framework Cu6(DDCBA)3 (ZJU-72, H5DDCBA = 3,5-di(3′,5′-dicarboxylpheny)-benozoic acid) with open metal sites and exposed carboxylate groups is rationally designed and synthesized, exhibiting a low binding energy of 9.7 kJ mol−1 for C2H2 and 15.1 kJ mol−1 for CO2 and a high separation selectivity of 39.7 for C2H2/CH4 at 298 K and 8.2 for CO2/CH4 at 273 K.
一种新的微孔金属-有机骨架的Cu 6(DDCBA)3(ZJU-72,H 5 DDCBA = 3,5-二(3',5'- dicarboxylpheny)-benozoic酸)与开放金属位点,并暴露羧酸盐基团是合理设计并合成,表现出低的结合9.7千焦耳摩尔的能量-1对C 2 H ^ 2和15.1千焦耳摩尔-1为CO 2和39.7对C高的分离选择性2 ħ 2 / CH 4在298K和8.2 CO 2 / CH 4在273 K.
Novel luminescent metal–organic frameworks based on rigid carboxylate ligands for highly selective sensing of Fe<sup>3+</sup>ions
powder X-ray diffraction (PXRD) and fluorescence spectroscopy. Compound 1 is a (5,5)-connected 3D framework with a 45·65} topology. Compound 2 possesses a (5,5)-connected 3D framework with a 47·63} topology. Compounds 3 and 4 display a (4,4,6)-connected 3D framework with a 42·64}244·611}244·62} topology. Remarkably, the four presented compounds show luminescence changes in the presence of metal ions
Two Microporous Metal–Organic Frameworks with Suitable Pore Size Displaying the High CO<sub>2</sub>/CH<sub>4</sub> Selectivity
作者:Jiang Li、Guo-Ping Yang、Shi-Long Wei、Rui-Cheng Gao、Nan-Nan Bai、Yao-Yu Wang
DOI:10.1021/acs.cgd.5b00997
日期:2015.11.4
Two microporous metal–organic frameworks, [Zn2(HDDCBA)]·2DMF·2H2O (1) and [Cd2(DDCBA)·DMA·H2O]·H2N(Me)2 (2) have been synthesized under solvothermal condition by using a less-exploited symmetrical pentacarboxylate ligand, 3,5-di(3′, 5′-dicarboxylphenyl)benozoic acid (H5L). Both compounds 1 and 2 reveal the (5,5)-connected nets based on the binuclear metal clusters and organic linkers. The desolvated structure of 1 (1a) contains two shapes of 1D channel with suitable pore size and polar system decorated by uncoordinated carboxylate groups. As a result, 1a possesses not only high CO2 loading but also excellent CO2/CH4 selectivity at 273 and 298 K. In addition, both compounds display solid-state luminescence stemming from the ligand-centered fluorescence of H5L.
在溶热条件下,利用一种较少开发的对称五羧酸配体合成了两种微孔金属有机框架:[Zn2(HDDCBA)]-2DMF-2H2O (1) 和 [Cd2(DDCBA)-DMA-H2O]-H2N(Me)2(2)、3,5-二(3′, 5′-二羧基苯基)苯甲酸 (H5L)。化合物 1 和 2 都显示了基于双核金属簇和有机连接体的 (5,5) 连接网。1 的解溶结构(1a)包含两种形状的一维通道,具有合适的孔径,极性体系由未配位的羧酸基团装饰。因此,1a 不仅具有较高的 CO2 负载,而且在 273 K 和 298 K 下具有出色的 CO2/CH4 选择性。
A Free Tetrazolyl Decorated Metal–Organic Framework Exhibiting High and Selective CO<sub>2</sub> Adsorption
作者:Zhiyong Lu、Fei Meng、Liting Du、Wenyun Jiang、Haifei Cao、Jingui Duan、Huajie Huang、Haiyan He
DOI:10.1021/acs.inorgchem.8b02031
日期:2018.11.19
transition-metal-based MOFs based upon an ideal MOF platform. With a BET surface area of 2070 m2 g–1, this new tetrazolyl-decorated MOF [Cu6(TBDPB)3(H2O)6]·9DMF·15H2O (HHU-5, HHU for Hohai University) exhibits a high CO2 adsorption capacity of 37.1 wt % at 1 bar and 273 K and high CO2 separation capacity toward N2 and CH4 as well.