<p>Carbon dioxide (CO<sub>2</sub>) emissions in the atmosphere are both of natural and anthropogenic sources. Obviously, the CO<sub>2</sub> is at the heart of the carbon cycle, which constantly exchanges carbon elements between the compartments of water, air and soil. These CO<sub>2</sub> emissions are either diffuse or concentrated. The latter, coming mainly from the industrial sectors and energy production, could be exploited as raw materials when the CO<sub>2</sub> capture systems are operational. The chemical valorization of CO<sub>2</sub> as a raw material is not a new idea and substantial research works dating from the 1980s attempt to lead to innovative synthetic routes. In the last decade, the decrease in the availability of fossil resources, have led to a renewed interest in this the valorization of CO<sub>2</sub>. Consequently, the chemical valorization of CO₂ encounters inherent challenges, most notably the substantial capital requirements and high implementation costs. Addressing these barriers necessitates the development of viable technological and economic strategies. However, the catalytic hydrogenation of CO<sub>2</sub>&#xa0;into value-added chemicals and alternative fuels is one of the attractive green approaches. Even though external energy consumption is a crucial impediment, but deemed possible to overcome. Thus, it is possible to take advantage of the commercial potential of CO<sub>2</sub> by exploiting it as a raw material in new chemical and industrial applications. In this present scientific endeavor, the state of the art and recent trends CO<sub>2</sub> valorization into valuable products like methanol, ethanol, formic acid, syngas, hydrocarbons, dimethyl ether, urea and its mineralization process are reviewed.</p>

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The state-of-the-art technologies and recent trends of sustainable pathways to transform captured carbon into eight key valuable products across industrial applications

  • David Lukumu Bampole

摘要

Carbon dioxide (CO2) emissions in the atmosphere are both of natural and anthropogenic sources. Obviously, the CO2 is at the heart of the carbon cycle, which constantly exchanges carbon elements between the compartments of water, air and soil. These CO2 emissions are either diffuse or concentrated. The latter, coming mainly from the industrial sectors and energy production, could be exploited as raw materials when the CO2 capture systems are operational. The chemical valorization of CO2 as a raw material is not a new idea and substantial research works dating from the 1980s attempt to lead to innovative synthetic routes. In the last decade, the decrease in the availability of fossil resources, have led to a renewed interest in this the valorization of CO2. Consequently, the chemical valorization of CO₂ encounters inherent challenges, most notably the substantial capital requirements and high implementation costs. Addressing these barriers necessitates the development of viable technological and economic strategies. However, the catalytic hydrogenation of CO2 into value-added chemicals and alternative fuels is one of the attractive green approaches. Even though external energy consumption is a crucial impediment, but deemed possible to overcome. Thus, it is possible to take advantage of the commercial potential of CO2 by exploiting it as a raw material in new chemical and industrial applications. In this present scientific endeavor, the state of the art and recent trends CO2 valorization into valuable products like methanol, ethanol, formic acid, syngas, hydrocarbons, dimethyl ether, urea and its mineralization process are reviewed.