Recent progress and perspective on integrated CO2 capture and utilization

Probing the Performance of a Ni–Ca–Ce Dual-Functional Material for Integrated CO2 Capture and Utilization from a Synthetic Flue Gas Approximating Industrial Composition

“…In their study on the FeCrCu/K/MgO-Al 2 O 3 DFM, Bobadilla et al showed that the presence of 5% O 2 and 4% H 2 O in a synthetic flue gas (9.5% CO 2 in N 2 ) resulted in a negative impact on the CO 2 capture efficiency and CO 2 conversion, which was hypothesized to be the result of an altered state of the active sites . As suggested by Lv et al in their recent perspective article on ICCU, the influence of gas components in actual industrial flue gas on the successive reactions requires further investigation . In their 2021 review, Sun et al identified several additional research gaps in the development of ICCU processes, namely, engineering aspects such as process design and techno-economic analysis, as well as more fundamental aspects such as a more in-depth understanding of the synergies between the sorbent and catalytic functionality in DFMs .…”

“…2 For the chemical conversion of CO 2 , different processes such as methanation, oxidative catalytic alkane dehydrogenation, dry reforming, and the reverse water−gas shift reaction (rWGS) have been explored. 2 Although the resulting ICCU processes usually require a high temperature and, thus, additional energy, they can be run isothermally and continuously by alternating the inlet flow to the reactor. The conventional counterparts of the CO 2 conversion processes require highly concentrated CO 2 to achieve satisfactory average space-time yields (STY ) and practically feasible product separation.…”

“…Both processes of capture and conversion rely on adequate materials to achieve satisfactory performance and stability. The process efficiency and economic viability of CCU could be enhanced by using dual-functional materials (DFMs) in an approach which is commonly termed integrated CO 2 capture and utilization (ICCU), which combines CO 2 capture and conversion in a single process . For the chemical conversion of CO 2 , different processes such as methanation, oxidative catalytic alkane dehydrogenation, dry reforming, and the reverse water–gas shift reaction (rWGS) have been explored .…”

“…The process efficiency and economic viability of CCU could be enhanced by using dual-functional materials (DFMs) in an approach which is commonly termed integrated CO 2 capture and utilization (ICCU), which combines CO 2 capture and conversion in a single process. 2 For the chemical conversion of CO 2 , different processes such as methanation, oxidative catalytic alkane dehydrogenation, dry reforming, and the reverse water−gas shift reaction (rWGS) have been explored. 2 Although the resulting ICCU processes usually require a high temperature and, thus, additional energy, they can be run isothermally and continuously by alternating the inlet flow to the reactor.…”

Investigation on Integrated CO2 Capture and Conversion Performance of Ni-CaO Dual-Function Materials Pellets: Effect of Ni Loading and Optimization of Operating Parameters

“…Recently, the CO 2 capture and CO 2 conversion processes have been integrated, and the integrated CO 2 capture and utilization (ICCU) scheme has gained increasing attention, regarding the advantages of low energy consumption and high efficiency . The ICCU process involves capturing CO 2 from the industrial exhaust gas by alkaline active sites on dual-function materials (DFMs) to form carbonates or bicarbonates, followed by in situ regeneration in “green hydrogen” derived from renewable energy or methane derived from biogas to produce synthetic fuels and value-added chemicals with the assistance of catalytic active sites …”