Novel triazine carbonyl polymer with large surface area and its polyethylimine functionalization for CO2 capture

Metal-Free Amine-Anchored Triazine-Based Covalent Organic Polymers for Selective CO2 Adsorption and Conversion to Cyclic Carbonates Under Mild Conditions

“…47 The deconvoluted N 1s peaks were also separated into two distinct peaks at 398.5 and 400.1 eV, which were attributed to the presence of NH 2 and −N = groups, respectively, in the polymer matrix. 41,48 These characterizations suggest that CTP-1-NH 2 and CTP-2-NH 2 were successfully synthesized, as expected.…”

“…The deconvoluted C1s spectra of CTP-X-NH 2 materials contained two distinct peaks at 284.6 and 287.7 eV, which could be assigned to C–C/CC and C–N/CN . The deconvoluted N 1s peaks were also separated into two distinct peaks at 398.5 and 400.1 eV, which were attributed to the presence of NH 2 and −N = groups, respectively, in the polymer matrix. , These characterizations suggest that CTP-1-NH 2 and CTP-2-NH 2 were successfully synthesized, as expected.…”

“…These values are superior to those of many benchmark materials, including nitrogen- or amine-functionalized POPs (Table S2). ,− In contrast, the adsorption isotherms of CH 4 and N 2 were almost linear up to 1 bar because of the absence of strong adsorption sites. For both materials, CH 4 uptake was much larger than N 2 uptake because of the higher polarizability of CH 4 (26 × 10 –25 cm 3 ) than that of N 2 (17.6 × 10 –25 cm 3 ) …”

“…It is well known that incorporation of amine functionality into highly porous materials is an efficient strategy for developing materials for CO 2 capture. , Notably, there have been reports that catalysts with −NH 2 , −COOH, or −OH could promote the cyclic carbonate reaction via hydrogen bonding interactions. , Based on this context, we hypothesized that incorporation of amine functional groups to the close proximity of triazine sites in a porous organic polymer (POP) material possessing large-surface area would be an ideal strategy to attain both a large CO 2 capture capacity and a high conversion in the CO 2 –epoxide cycloaddition reaction. To the best of our knowledge, there has been no report for developing an amine-incorporated triazine polymer for CO 2 capture and conversion into cyclic carbonates.…”

Novel Porous Organic Polymer Catalyst with Phosphate and Sulfonic Acid Sites for Facile Esterification of Levulinic Acid

“…Porous organic polymers (POPs) containing covalent linkages of organic precursors exhibit a high surface area, a tunable backbone, excellent physicochemical stability, and flexibility for rational design. Hence, they have been used in catalysis, adsorption, gas separation, sensor, proton conductor, and energy storage. − In particular, surface-functionalized POPs have shown potential as catalysts for biomass conversion. − Ravi et al converted fructose to 5-hydroxymethylfurfural (HMF) over novel phosphate-functionalized POPs with strong acidic sites, large surface areas, and high mesoporosity . Du et al introduced sulfonic acids into the aromatic sites of POP to catalyze fructose conversion to HMF .…”