CO 2 green technologies in CO 2 capture and direct utilization processes: methanation, reverse water-gas shift, and dry reforming of methane
CO 2 green technologies, such as methanation, reverse water-gas shift (rWGS), and dry reforming of methane (DRM), in CO 2 capture and direct utilization processes are proposed to reduce the total thermal energy by effectively combining CO 2 capture and conversion using Ni/CaO catal-sorbents. Compare...
Saved in:
Published in | Sustainable energy & fuels Vol. 4; no. 11; pp. 5543 - 5549 |
---|---|
Main Authors | , , , , , , |
Format | Journal Article |
Language | English |
Published |
27.10.2020
|
Online Access | Get full text |
Cover
Loading…
Summary: | CO
2
green technologies, such as methanation, reverse water-gas shift (rWGS), and dry reforming of methane (DRM), in CO
2
capture and direct utilization processes are proposed to reduce the total thermal energy by effectively combining CO
2
capture and conversion using Ni/CaO catal-sorbents. Compared to conventional calcium looping using CaO-based sorbents, carbonated Ni/CaO catal-sorbents are completely regenerated at lower temperatures by simultaneously converting the captured CO
2
into chemicals
via
methanation, rWGS, or DRM. At optimum temperatures and concentrations of the feed gas (H
2
or CH
4
), the Ni/CaO catal-sorbents show excellent CO
2
capture capacity and productivity. In addition, the structural variation of the Ni/CaO catal-sorbents is elucidated. Based on these theoretical and experimental studies, the novel integrated CO
2
capture and direct utilization processes can be a promising technology to produce chemicals as well as mitigate CO
2
levels from large-scale sources. |
---|---|
ISSN: | 2398-4902 2398-4902 |
DOI: | 10.1039/D0SE00951B |