40820-32-4Relevant academic research and scientific papers
Gas Adsorption in R2-MOF-5 Difunctionalized with Alkyl Groups
Sugamata, Koh,Kobayashi, Sho,Iihama, Teruyuki,Minoura, Mao
, p. 3185 - 3190 (2021)
Zinc terephthalate metal?organic framework (MOF) MOF-5 and some of its dialkylated derivatives (R2-MOF-5; R=Me, Et, Pr, Bu) were obtained from a solvothermal synthesis using 2,5-dialkyl-1,4-benzenedicarboxylic acids with zinc nitrite. The effect of the solvent on the solvothermal synthesis of R2-MOF-5 was investigated. For R=H and Me, interpenetrating or non-interpenetrating MOFs obtained depending on the choice of reaction solvent, while for R=Et, Pr, and Bu, no such solvent effect was observed, and only jungle-gym-type MOFs were generated. All compounds were fully characterized using powder X-ray diffraction analysis (PXRD), Fourier-transform infrared (FT-IR) spectroscopy, and thermogravimetric analysis (TGA). After activation, all these compounds exhibit significant porosity, as confirmed by N2-, H2-, and CO2-sorption experiments. The N2-adsorption capacity of these compounds depends on the size of the attached alkyl groups, while the H2-uptake values tend to increase for the alkyl-functionalized MOFs relative to the unfunctionalized parent MOFs and exhibit a maximum value for Pr2-MOF-5.
