Simultaneous CO2 capture and metal purification from waste streams using triple-level dynamic combinatorial chemistry

Efficient Electrochemical Reduction of CO2 to Formate in Methanol Solutions by Mn Functionalized Electrodes in the Presence of Amines

“…DETA stands in between the two extreme cases of PMDETA and TMEDA and moderately enhances the selectivity toward formate production. We recently reported that DETA-CO2 is a compositionally complex system in methanol 6 which is herein even further complexified by the presence of water (Figure 4c). While some methanol activating dipolar patterns can be found on some members of the DETA-based library of carbamates and carbonates (such as species 1c-DETA, 1a-DETA and 1s-DETA, Figure 4d), the presence of appended charges or polar moieties seems to prevent any enhancement of H2 production.…”

“…To process diluted and low-pressure streams, such as those emitted by fossil-fired power plants, chemical absorption with aqueous amine solutions, called aminescrubbing, is the most appropriate technology. [3][4][5][6] Amines spontaneously react with CO2 affording equilibrated mixtures of ammonium carbamates (Scheme 1, eq. 1) and bicarbonate (in the presence of water, Scheme 1, eq.…”

“…Although most CO2 utilization processes reported to date operate from purified CO2, there has been a growing interest for the direct conversion of capture products in the past decade. 8 These examples include the utilization of carbamates as metal extractants 6 , as vehicles for mineral carbonation 9 , or their conversion into renewable fuels such as methanol. 8,10 The latter is a true transformation, not a utilization but it raises the issue of the electron source needed to produce hydrogen, itself required for CO2 reduction.…”

Atmospheric Carbon Dioxide Capture as Carbonate into a Luminescent Trinuclear Cd(II) Complex with Tris(2-aminoethyl)amine Tripodal Ligand

“…In the trinuclear complexes, the bridging tren ligand is replaceable by carbonate anion because it pre-organizes the metal ions in a trigonal manner favorable to a µ 3 -k 2 :k 2 :k 2 coordination mode, and the basic free ligand enhances the atmospheric CO 2 capture. As potential mechanisms for carbonate formation, we can mention here hydration of the CO 2 followed by the deprotonation of the carbonic acid in basic condition [2], or generation of tren carbamates followed by hydrolysis and deprotonation [21]. Despite their toxicity, the interest in cadmium complexes is justified by their potential luminescent properties, in the attempt to combine the CO 2 capture ability with sensing application.…”

Simultaneous Formation of a Fully Organic Triply Dynamic Combinatorial Library

“… 13 Noteworthy is the work of Leclaire, where an appropriate design and the combination of simple building blocks enable the formation of a highly interesting class of compounds capable of capturing CO 2 . 14 More recently, Anslyn and co-workers reported reversible exchange processes involving four independent linkages, namely, boronic ester, disulfide, hydrazone, and coordination bonds. 15 Although such examples define the essence of multidynamic systems, those operating simultaneously under the same conditions are still very rare.…”