Phosphonates Meet Metal-Organic Frameworks: Towards CO2 Adsorption

被引：6
|
作者：
da Silva, Cleiser Thiago P. [1 ,2 ]
Howarth, Ashlee J. [1 ,3 ]
Rimoldi, Martino [1 ]
Islamoglu, Timur [1 ]
Rinaldi, Andrelson W. [2 ]
Hupp, Joseph T. [1 ]
机构：
[1] Northwestern Univ, Dept Chem, 2145 Sheridan Rd, Evanston, IL 60208 USA
[2] Univ Estadual Maringa, Lab Mat Chem & Sensors, Av Colombo 5790, BR-87020900 Maringa, PR, Brazil
[3] Concordia Univ, Dept Chem & Biochem, 7141 Sherbrooke St W, Montreal, PQ H4B 1R6, Canada
来源：
ISRAEL JOURNAL OF CHEMISTRY | 2018年 / 58卷 / 9-10期
基金：
美国国家科学基金会;
关键词：
metal-organic frameworks; porous phosphonates; carbon dioxide capture; zirconium-based MOFs; CARBON-DIOXIDE CAPTURE; CRYSTAL-STRUCTURE; PROTON CONDUCTIVITY; POROUS MATERIALS; PORE-SIZE; DESIGN; MOFS; STABILITY; PH; FUNCTIONALIZATION;
D O I：
10.1002/ijch.201800129
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
Here we report a new highly microporous zirconium phosphonate material synthesized under solvothemal conditions. The specific Brunauer-Emmett-Teller (BET) surface area of the "unconventional metal-organic framework" (UMOF) is measured to be similar to 900 m(2)/g, after following an appropriate activation protocol. Diffuse reflectance infrared Fourier transform spectroscopy (DRIFTS) shows that the material bears a free -OH functionality on the phosphonate linker that may interact with CO2. CO2 adsorption isotherms were collected and a measured heat of adsorption of 31 kJ/mol was obtained. In addition, adsorption isotherms of CO2, N-2, and CH4 at 298 K combined with Ideal Adsorbed Solution Theory (IAST) show that the material can be expected to display high selectivities for uptake of CO2 versus N-2 or CH4.
引用
收藏
页码：1164 / 1170
页数：7
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