Co(II)-tricarboxylate metal–organic frameworks constructed from solvent-directed assembly for CO2 adsorption

Development of a Semiautomated Zero Length Column Technique for Carbon Capture Applications: Rapid Capacity Ranking of Novel Adsorbents

“…Most of the recent studies have been concentrated on the hydrogen and methane storage [12][13][14][15][16][17] some MOF materials show extremely high CO 2 capacity and very desirable isotherm shapes also drawn considerable attention in CO 2 capture. [18][19][20][21][22][23][24] However, even if some MOF materials have good CO 2 uptake, for post-combustion capture applications it is more important to understand CO 2 adsorption in the low pressure region than at high pressures. 21,[25][26][27] Given the large number of possible MOF topologies, linkers, and metal nodes, there are an almost unlimited number of MOFs that could be synthesized.…”

Metal‐ion‐dependent, Solvent‐mediated Structural Transformation and Simultaneous Partial Transmetalation of an srs Framework into Desulfurization‐efficient Co‐Cu‐HKUST‐1

“…In the original srs framework, there are two kinds of metal coordination sites, namely octahedral-coordinated and tetrahedral-coordinated. Although our work and other literatures prove both sites can be used to accommodate either Zn 2+ or Co 2+ ions, [23,48,51] we propose Co 2+ and Zn 2+ prefer to be octahedraland tetrahedral-coordinated respectively because in [CoZn(BTC)(Cl)(DMA) 3 ] successfully prepared through direct synthesis with the initial ratio of Co 2+ :Zn 2+ being 1:1, [52] Co 2+ and Zn 2+ are octahedral-and tetrahedral-coordinated respectively. Therefore, we propose part of tetrahedral-coordinated Co 2+ could be replaced by Zn 2+ during the conversion of 1 into 3.…”

“…The bond lengths of Co2-O in -COOH and DMA are 2.079(4)-2.105(4) Å and 2.073(4)-2.097(4) Å respectively, close to those reported for other complexes containing Co 2+ -carboxylate units (Note: selected bond lengths and angles of 1 are shown in Table S1, Supporting Information). [48] The two Co 2+ ions are bridged by three carboxylates to afford an unusual quasi-paddlewheelshaped {Co 2 (CO 2 ) 3 } SBU with Co•••Co separation of 3.77 Å (Figure 1a). Each ligand uses six carboxylate oxygen atoms to coordinate to six Co 2+ from three {Co 2 (CO 2 ) 3 } SBUs respectively ( Figure 1b).…”

“…[23,51] In the synthesis of the Co 2+ -based framework, N,N-diethylformamide (DEF) molecules rather than DMA molecules were employed and the use of phthalic acid to adjust the pH of the synthetic DEF solution was proven essential. [48] In contrast, phthalic acid was proven unnecessary in the synthesis of 1. Besides, the reaction time and temperature were reduced to 24 h and 105°C respectively, further confirming the important role of solvents in the synthesis of the srs frameworks.…”

A new method of processing CO2 and magnesite slag simultaneously

“…70 YANG et al There are more and more reports on separation by adsorption, due to the advantages of regeneration and convenient industrial application, while the important issues for the methods is to develop a non-polluting and efficient adsorbent. 2 Researchers have developed ionic liquids, 3 MOFs, 4 alkali metal oxide, 5 activated carbon 6 and porous materials 7 for CO 2 capture, obtaining some achievements. Many new materials also appear constantly.…”