Synthesis and use of new porous metal complexes containing a fusidate moiety as gas storage media

A Process for Carbon Dioxide Capture Using Schiff Bases Containing a Trimethoprim Unit

“…The surface morphology of the Schiff bases was similar in terms of pore size and shape. The pore dimension was found to be in the range of 33.6-41.7 nm for 1, 29.5-39.0 nm for 2, and 24.9-53.7 nm for 3, which are comparable with those of telmisartan tin complexes (20-50 nm) [43] and fusidate metal complexes (29-50 nm) [45] and smaller than those of carvedilol metal complexes (51-394 nm) [42], melamine Schiff bases (20-392 nm) [46], polysilicates (35-208 nm) [47], and polyphosphates (28-981 nm) [48,49].…”

“…The specific surface areas of 1-3 were low, with Schiff base 1 with a meta arrangement (Figure 8) exhibiting the highest surface area (20.3 m 2 /g). The surface areas of trimethoprim Schiff bases (4.2-20.3 m 2 /g) were relatively larger than those of carvedilol metal complexes (6.1-9.0 m 2 /g) [42], melamine Schiff bases (5.2-11.6 m 2 /g) [46], and polysilicates (8.2-18.0 m 2 /g) [47], albeit smaller than those of telmisartan tin complexes (32.4-130.4 m 2 /g) [43], valsartan metal complexes (16.0-22.8 m 2 /g) [44], fusidate metal complexes (31.2-46.9 m 2 /g) [45], and polyphosphates (24.8-213.5 m 2 /g) [48,49].…”

“…The CO 2 capture over 1-3 was much better than over other absorbents under similar conditions (high pressures and temperatures) [42][43][44][45][46][47][48][49]. For instance, CO 2 adsorption capacity over metal complexes containing a carvedilol moiety was very limited (2.1-3.5 wt%) [42].…”

“…Organotin complexes bearing a telmisartan unit afforded CO 2 uptake of 7.1 wt% [43], and that over valsartan metal complexes was as low as 6.8 wt% [44]. The CO 2 uptake over a manganese fusidate complex, which has a relatively high surface area, was 7.2 wt% [45]. The CO 2 uptake over copper (6.7 wt%) and zinc fusidate (6.3 wt%) complexes was lower than that over a manganese-containing adsorbent.…”

“…Considering that these characteristics could be beneficial for CO 2 adsorption, we attempted the synthesis of new trimethoprim Schiff bases and investigated their application in CO 2 capture. Recently, a range of materials has been designed, synthesized, and used to capture CO 2 [42][43][44][45][46][47][48][49].…”