A green sorbent for CO₂ capture: α-cyclodextrin-based carbonate in DMSO solution

Abstract

α-Cyclodextrin dissolved in DMSO is a potential sorbent for CO2 capture through the exclusive formation of ionic organic carbonate.

CS2/CO2Utilization Using Mukaiyama Reagent as a (Thio)carbonylating Promoter: A Proof-of-Concept Study

“…As an augmentation to our research efforts on CO 2 capture using biorenewables, − biomaterials, , and small organic molecules/oligomers, , as well as CO 2 utilization catalyzed by poly­(ionic liquid)­s, organocatalysts, and metal oxide/inorganic complexes, − we provide a platform for the synthesis of olidines and olanes, including imidazolidin-2-one, oxazolidin-2-one, 1,3-dioxolan-2-one, 1,3-dithiolan-2-one, and their sulfur counterparts upon reacting CO 2 (CS 2 ) with ethylenediamine ( en ), monoethanolamine (MEA), ethylene glycol (EG), and ethane-1,2-dithiol (EDT), respectively, in the presence of CMPI as shown in Scheme .…”

Unconventional CO2-Binding and Catalytic Activity of Urea-Derived Histidines

“…The nitrogen pool of naturally occurring compounds is of particular interest for CO 2 capturing and utilization. − ,,− In this respect, pristine and functionalized amino acids (AAs) have been explored to catalyze the cycloaddition reaction of CO 2 with epoxides. − Among AAs, the ease of histidine (His) functionalization via different active sites makes it of potential importance for further derivatization, as reported by different research groups. − Recently, His-derived ILs were introduced by Guillen et al , in a multistep synthesis via carbonyldiimidazole (CDI) forming a urea-derivative. Such compounds showed good catalytic reactivity in different organic reactions. − Examples of His-based catalysts for CO 2 utilization are shown in Scheme C.…”

Direct Evidence for Reaction between Cellulose and CO2 from Nuclear Magnetic Resonance

“…15 The reaction with CO 2 could additionally have much wider bearingfor use as a renewable carbon capturing system. Cyclodextrin in DMSO in the presence of KOH, 18 and as a metal−organic framework together with RbOH, 19 has previously been suggested for this purpose, and so has small-molecule alcohols 20,21 and, interestingly, the β-glucans chitin and chitosan. 22−24 In some of the works on carbohydrates, direct detection of the carbonate species by 13 C NMR is reported, 18,19,22,24 which suggests that the same should be possible for cellulose carbonate.…”

“…The reaction with CO 2 could additionally have much wider bearingfor use as a renewable carbon capturing system. Cyclodextrin in DMSO in the presence of KOH, and as a metal–organic framework together with RbOH, has previously been suggested for this purpose, and so has small-molecule alcohols , and, interestingly, the β-glucans chitin and chitosan. − In some of the works on carbohydrates, direct detection of the carbonate species by 13 C NMR is reported, ,,, which suggests that the same should be possible for cellulose carbonate. Interestingly, recent results suggest that the formation of organic carbonates play a role in the CO 2 -capturing ability of alkanolamines, in addition to that of the carbamates formed by the reaction between the amine group and CO 2 . , …”