Cu-BTC and Fe-BTC metal-organic frameworks: Role of the materials structural features on their performance for volatile hydrocarbons separation

Applicability of Iron (III) Trimesic (Fe-BTC) to Enhance Lignin Separation from Pulp and Paper Wastewater

“…Figure 2 shows the spectra of lignin and Fe-BTC that were synthesized. The spectra absorption bands of Fe-BTC are similar to those found in previous studies (Autie-Castro et al 2015;García et al 2014;Mahmoodi et al 2018). Infrared absorption bands from 1300 to 1700 cm -1 indicate the presence of the carboxylate functional group, while the bands below 1300 cm -1 suggest an aromatic benzene ring, which are consistent with the nature of the involved organic ligands.…”

Adsorption mechanism on metal organic frameworks of Cu-BTC, Fe-BTC and ZIF-8 for CO2 capture investigated by X-ray absorption fine structure

“…Again, for Fe-BTC and ZIF-8, there was no observed changes in crystal phase between fresh, activated, absorbed and desorbed MOFs. These TEM results were very close to the previous reports [33,[35][36][37]. These TEM results were very close to the previous reports [33,[35][36][37].…”

Tuning the adsorption potential. Separation of aromatic hydrocarbons by cobalt and zinc zeolitic imidazolate frameworks

“…An analogue behavior could be present during the transport of light aromatic hydrocarbons through the packed columns. Under an appropriate disposition for the MIm ligands, the maximum pore windows increases up to 7.8 Å, which is sufficient to allow the entrance of benzene, toluene and p-xylene.The separation capability observed for the solid solution of ZIF type materials, is similar to that observed for HKUST-1[29], a metal-organic framework with partially naked copper atom at the surface of the cavities. Such metal centers create a local anisotropic electric field gradient, which is responsible for the relatively large adsorption potential for molecules with quadrupole moment.…”

“…In addition, in many of these materials, the local adsorption field and the pore window size and shape are tunable properties, which favor the separation of molecules of similar features [8][9][10]. Zeolitic imidazolate frameworks (ZIFs) form a series of porous solids within MOFs-type materials, with important distinctive characteristics, among them: high thermal and chemical stability [11], a zeolite-type pore topology related to an M-Im-M bond angle similar to the Si-O-Si (145 o ) one found in zeolites [12], and simple and size-controlled synthesis for their production [13,14] and a flexible framework [15,16].…”