Amine Phase-Transfer Chemistry: A Green and Sustainable Approach to the Nonbiological Mineralization of CO₂

Abstract

An amine phase-transfer approach is a novel design for the facile and recyclable fixation and nonbiological mineralization of CO2 into alkaline earth carbonate (MCO3, M = Ca, Sr, and Ba) crystals with uniformed polymorphs at room temperature under atmospheric pressure. The amines’ system based on two phases of water and Zn-tetraphenylporphyrin (ZnTPP) in CH2Cl2 provides a green and sustainable CO2 capture and utilization (CCU) strategy for the mitigation of anthropogenic CO2 emission to the atmosphere.

Comparative Study between Pristine Ag and Ag Foam for Electrochemical Synthesis of Syngas with Carbon Dioxide and Water

“…The exponential increase in anthropogenic carbon dioxide (CO 2 ) emissions to the Earth's atmosphere, has become one of the most urgent problems for the human society [1,2]. Many feasible methods for decreasing the concentration of CO 2 in the atmosphere have been carried out, such as CO 2 capture, utilization and storage [3][4][5][6][7][8][9]. Among these methods, the conversion of CO 2 to useful chemicals with the aid of renewable energy sources (wind, solar, tidal, etc.)…”

United Conversion Process Coupling CO2 Mineralization with Thermochemical Hydrogen Production

“…CO 2 mineralization is an accelerated process of natural rock weathering, which involves an exothermic reaction between CO 2 and alkaline metal minerals to form stable carbonate minerals so that the CO 2 is permanently sequestered from the atmosphere. , Various materials, such as Ca/Mg carbonates and silica and metal oxide byproducts, which could find applications in the marketplace (but not in satisfactory volumes), are usually produced through mineralization. A large number of alkaline metal minerals could act as feedstocks for CO 2 mineralization, and a division can be made between natural silicates and basic industrial wastes. − The latter, such as fly ash and steel slag, have received attention in recent years due to their relatively high reactivity with CO 2 , and many CO 2 mineralization processes based on basic industrial wastes have been proposed. − However, mineralization based on alkaline industrial waste is not considered deployable on a large scale because these waste materials are not available in sufficiently large amounts …”